CN109577971B - Ground stress testing device and method - Google Patents
Ground stress testing device and method Download PDFInfo
- Publication number
- CN109577971B CN109577971B CN201811540925.XA CN201811540925A CN109577971B CN 109577971 B CN109577971 B CN 109577971B CN 201811540925 A CN201811540925 A CN 201811540925A CN 109577971 B CN109577971 B CN 109577971B
- Authority
- CN
- China
- Prior art keywords
- drilling tool
- drilling
- rod
- extension rod
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009662 stress testing Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 30
- 238000005553 drilling Methods 0.000 claims abstract description 235
- 239000000725 suspension Substances 0.000 claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 5
- 241001449342 Chlorocrambe hastata Species 0.000 claims description 42
- 230000005540 biological transmission Effects 0.000 claims description 42
- 238000012360 testing method Methods 0.000 claims description 41
- 239000011435 rock Substances 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 34
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 239000010432 diamond Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 14
- 229910003460 diamond Inorganic materials 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 15
- 238000009434 installation Methods 0.000 abstract description 3
- 241001422033 Thestylus Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/02—Core bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/084—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with flexible drawing means, e.g. cables
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Geophysics (AREA)
- Marine Sciences & Fisheries (AREA)
- Soil Sciences (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an earth stress testing device, which comprises an advanced drilling tool, wherein the advanced drilling tool comprises an outer pipe of the advanced drilling tool and an inner pipe of the advanced drilling tool, and the earth stress testing device also comprises a contact type aperture strain measuring device, wherein the contact type aperture strain measuring device comprises a salvaging suspension part, a circuit bin part, a measuring extension rod, a contact part and an anti-impact part which are sequentially connected; separating the advanced drilling tool from the contact type aperture strain measuring device to ensure the safety of the contact type aperture strain measuring device; installation, measurement, recovery, convenient operation realizes easily that measurement of efficiency is higher.
Description
Technical Field
The invention belongs to the technical field of rock mechanical tests, and particularly relates to a ground stress testing device and a ground stress testing method.
Background
The ground stress is the fundamental acting force causing deformation and damage of mining, water conservancy and hydropower and other underground or open-air geotechnical excavation engineering, and is the necessary premise for determining the mechanical property of the engineering rock mass, carrying out the stability analysis of the surrounding rock and realizing the excavation design and decision scientization of the geotechnical engineering. With the continuous development of deep engineering construction to the deep, particularly large-scale underground power stations, underground caverns and deep shale gas exploitation, in the analysis of deep engineering stability, the ground stress state is one of the most important and fundamental factors, and the ground stress test is an important content of excavation design, rock stability evaluation and engineering disaster prediction.
The stress relieving method is the most commonly adopted ground stress measuring method with longest development time and mature technology at home and abroad at present, and no method can be compared with the stress relieving method in the aspects of applicability and reliability of ground stress measurement. The testing principle is that complete stress relief of the trepanning core is achieved in a trepanning mode, so that the rock mass at the measuring point is completely separated from the ground stress, and the size and the direction of the ground stress are determined.
At present, a stress relief method forms a set of standard measurement procedures, and the specific steps are as follows: (1) drilling a large borehole from the surface of a rock mass, generally from the surface of an underground roadway or a tunnel, to the interior of the rock mass to a part needing to measure the stress of the rock mass; (2) drilling concentric small holes from the bottom of the large hole for installing probes, wherein the diameter of the small holes is determined by the diameter of the selected probes; (3) mounting a measuring probe to the central part of the small hole by using a set of special devices; (4) and (4) continuously extending the large holes by using the thin-wall drill bit for drilling the large holes in the first step, so that the stress relief of the core around the small holes is realized. The ground stress measuring equipment developed based on the method has a plurality of application cases, the method determines the magnitude and the direction of the ground stress by measuring the deformation of the rock, and has the characteristic of high measuring precision, but most measuring equipment is difficult to adapt to the high-temperature and high-pressure environment conditions under deep drilling. The traditional stress relief method equipment usually adopts electronic measurement components, the measurement components can have temperature drift and zero drift at high temperature, the high osmotic pressure can cause the problems of difficult component pasting, equipment water inlet and the like, and especially when the components are not firmly bonded with the hole wall, the accuracy of a test result can be seriously influenced. In addition, the traditional stress relief method finishes one measurement, needs to wait for the consolidation of the underground adhesive, needs to lift and put the drill rod 4 times, and has complex process and overlong construction period for measuring the ground stress in deep holes and ultra-deep holes.
At present, the drilling of the depth of more than 500 meters mostly adopts the wire line core drill to drill, and the biggest advantage of the wire line core drill is in putting the drilling rod fast, and the stress test of current stress relief method all needs to be accomplished with the cooperation of single tube core drill, under the wire line core drill condition, the operation such as measuring element is laid, the threading, is relieved and is bored can't be realized, has also led to in the deep bore hole, especially under the wire line core drill condition, is difficult to carry out the stress relief method ground stress test. In summary, the conventional measurement technology, measurement components and test flow cannot meet the requirement of stress relief method ground stress test of deep drilling under a rope core drill, and new measurement technology, measurement components and test flow are urgently needed.
Disclosure of Invention
The present invention is directed to provide an apparatus and a method for testing ground stress, which solve the above problems of the prior art.
The above object of the present invention is achieved by the following technical solutions:
the ground stress testing device comprises a leading drilling tool,
the advanced drilling tool comprises an outer pipe of the advanced drilling tool and an inner pipe of the advanced drilling tool,
the outer pipe of the advanced drilling tool comprises an elastic clamping pipe and an outer pipe of the rope core drilling tool, one end of the elastic clamping pipe is connected with one end of the outer pipe of the rope core drilling tool, the other end of the outer pipe of the rope core drilling tool is provided with an annular inner step, the inner edge of the annular inner step forms a centralizer penetrating hole, the outer wall of one end of the outer pipe of the rope core drilling tool, which is provided with the annular inner step, is provided with diamond particles, one end of the outer pipe of the rope core drilling tool, which is provided with the annular inner,
leading drilling tool inner tube is including playing the fastener, pass the power extension rod, right the ring, drilling rod extension rod and centralizer, it is intraductal to play the fastener setting at the bullet fastener, the draw-in groove with bullet fastener adaptation is seted up to bullet fastener inside pipe wall, it is connected with power extension rod one end to play the fastener, the power extension rod other end is connected with centralizer one end, the centralizer other end passes the centralizer and passes the hole and be connected with drilling rod extension rod one end, the drilling rod extension rod other end is provided with pregnant diamond of inlaying, the inner circle movable sleeve of righting the ring is established on the centralizer, the outer lane of righting the ring is connected with the inner wall of rope core drill tool outer tube.
The spring clip piece comprises an outer cylinder body of a spring clip frame, a spring clip pulling part and a spring clip clamp,
the elastic clamp comprises a rotary pin, a linear tension spring and two clamp blades, wherein the rotary pin is connected with the inner wall of an outer barrel of the elastic clamp frame, one ends of the two clamp blades are movably sleeved on the rotary pin, the other ends of the two clamp blades are respectively connected with two ends of the linear tension spring, the middle part of the linear tension spring is connected with an elastic clamp pulling part, the elastic clamp pulling part is connected with a drilling tool fishing spearhead, a part, corresponding to the clamp blades, of the side wall of the outer barrel of the elastic clamp frame is provided with a clamp blade extending hole, one end of the outer barrel of the elastic clamp frame is connected with one end of a force transmission extension rod, a limit ring is sleeved on one end, connected with the force transmission extension rod and the outer barrel of the elastic clamp frame, the inner ring of the suspension ring is movably sleeved on one end, the outer ring is connected with the inner wall of the rope core drilling tool, and.
As above pass power extension rod and drilling rod extension rod be the hollow tube, be provided with in the centralizer and overflow the passageway, the well kenozooecium both ends that pass the power extension rod respectively with overflow passageway one end and shell card frame outer barrel intercommunication, overflow the passageway other end and the well kenozooecium intercommunication of drilling rod extension rod, the drilling rod extension rod is provided with the one end of pregnant diamond of inlaying and has seted up out the liquid hole.
The centralizer comprises a centralizing thick end and a centralizing thin end, the centralizing thick end and the centralizing thin end are in shaft connection, the centralizing thin end penetrates through a centralizer penetrating hole formed by an annular inner step, the centralizing thick end penetrates through a centralizing ring, the outer diameter of the centralizing thick end is larger than that of the centralizing thin end, the outer diameter of the centralizing thick end is smaller than the inner diameter of the centralizing ring, the outer diameter of the centralizing thick end is smaller than that of a suspension ring, and an overflowing channel penetrates through the centralizing thick end and the centralizing thin end.
The ground stress testing device also comprises a contact type aperture strain measuring device, the contact type aperture strain measuring device comprises a salvaging suspension part, a circuit bin part, a measuring extension rod, a contact part and an anti-impact part which are connected in sequence,
the salvaging suspension part comprises a measuring salvaging spearhead and a sealing cover, the measuring salvaging spearhead is connected with one side of the sealing cover, the other side of the sealing cover is provided with a sealing cover inner screw thread end, one end of a starting switch is provided with an aviation plug-in male connector, the periphery of the starting switch is provided with a switch connecting outer screw thread, the two ends of a data transmission interface are respectively a first connecting end and a second connecting end, the periphery of the first connecting end is provided with a transmission interface outer screw thread matched with the sealing cover inner screw thread end, the first connecting end is internally provided with a transmission interface inner screw thread matched with the switch connecting outer screw thread, the first connecting end is internally provided with an aviation plug-in female connector matched with the aviation plug-in male connector, the second connecting end is connected with one end of the circuit bin part through a screw thread, the other end of the circuit bin part is connected with one end of a measuring extension rod through a screw thread, the periphery, the other end of the measuring extension rod is connected with one end of a contact part through a screw thread, the other end of the contact part is embedded with an anti-impact part, and the diameter of the sealing cover is larger than the inner diameter of the annular inner step.
The ground stress testing method comprises the following steps:
firstly, assembling an outer pipe of the advanced drilling tool and an inner pipe of the advanced drilling tool, connecting a drill rod with an elastic clamping pipe of the outer pipe of the advanced drilling tool through a screw thread, hoisting the outer pipe of the advanced drilling tool into a well drilling well by using the drill rod,
secondly, the rope core taking fisher is connected to a drilling tool fishing spearhead of the inner pipe of the advanced drilling tool, the inner pipe of the advanced drilling tool is hung in a drill rod, the rope core taking fisher is lowered until the elastic clamping piece of the inner pipe of the advanced drilling tool enters a clamping groove on the inner wall of an elastic clamping pipe of the outer pipe of the advanced drilling tool, the rope core taking fisher is separated from the drilling tool fishing spearhead,
thirdly, the drilling machine drives a drilling rod, the drilling rod drives an inner pipe of the advanced drilling tool and an outer pipe of the advanced drilling tool to be placed at the bottom of the hole, the tail end of an extension rod of the drilling rod is in contact with the rock, then the drilling machine is started, a slurry pump is started, drilling fluid is sent into the drilling rod through the slurry pump and flows between the inner pipe of the advanced drilling tool and the outer pipe of the advanced drilling tool through the drilling rod, and the drilling fluid sequentially passes through a caliper blade extending hole, an elastic clamping frame outer cylinder, a force transmission extension rod, a centralizer and the extension rod of the drilling rod; the drill drives the drill rod to rotate, the drill rod drives the outer pipe of the advanced drilling tool to rotate, the outer pipe of the advanced drilling tool drives the inner pipe of the advanced drilling tool to rotate, the impregnated diamond at the tail end of the extension rod of the drill rod starts to cut rock until the centralizer is contacted with the rock, a test hole is formed at the bottom of the drill hole, when the centralizer is contacted with the rock, the drilling is stopped,
fourthly, lowering the rope coring fisher to enable the rope coring fisher to be connected with the fishing spearhead of the drilling tool, lifting the fishing spearhead of the drilling tool through the rope coring fisher so as to enable the calipers to be separated from the three-bullet clamping chamber, separating the fishing spearhead of the drilling tool after the fishing fisher salvages the inner pipe of the leading drilling tool, connecting the rope coring fisher with the measuring fishing spearhead of the contact type aperture strain measuring device, lifting the contact type aperture strain measuring device into the drilling rod by using the rope coring fisher, and lowering the rope coring fisher until a measuring extension rod, a contact part and an impact preventing part of the contact type aperture strain measuring device enter the testing hole; the rope coring fisher is separated from the measuring fishing spearhead, the distance between the wall of the testing hole and the central axis of the contact part is measured through the contact part,
fifthly, starting the drilling machine, starting a slurry pump to enable the drilling machine to drive a drill rod to rotate, enabling the drill rod to drive an outer pipe of the advanced drilling tool to rotate, enabling a drill bit of the outer pipe of the drilling tool to start cutting rocks, keeping a drilling state, enabling drilling fluid to enter the drill rod through the slurry pump, calculating the drilling depth of the outer pipe of the advanced drilling tool at the bottom of a hole by measuring the length of the rest drill rod at the upper part of a well head, stopping drilling when the drilling depth exceeds the depth of a test hole, drilling a circular ring columnar core at the bottom of the hole at the moment, enabling the periphery of the circular ring columnar core to be completely separated from rocks on the wall of the hole,
sixthly, the drilling machine is started, the drill rod is lifted, the drill rod drives the outer pipe of the advanced drilling tool to move upwards, the annular inner step of the outer pipe of the rope core drilling tool moves to the position of a sealing cover of the contact type aperture strain measuring device, the sealing cover is driven to move upwards, the contact type aperture strain measuring device is pulled out from the test hole, the drill rod is kept still, the rope core fishing tool is connected with the measuring spear head, the wellhead is lifted by the rope core fishing tool with the contact type aperture strain measuring device, and the recovery of the contact type aperture strain measuring device is achieved.
Compared with the prior art, the invention has the following advantages:
1. the structure is simple. The advanced drilling tool is composed of simple mechanical components to realize the drilling process of the test hole, and the contact type aperture strain measuring device has the function of off-line recording and storing data and breaks through the limit of the measuring depth;
2) is safe and reliable. Separating the advanced drilling tool from the contact type aperture strain measuring device to ensure the safety of the contact type aperture strain measuring device;
3) the operation is convenient. The advanced drilling tool and the contact type aperture strain measuring device can both utilize field construction equipment, realize the installation, measurement and recovery of the equipment, are convenient to operate and easy to realize, and have higher measuring efficiency;
4) has low requirement on environment. The method overcomes the influence of the environment and can be used for measuring the ground stress of deep holes and ultra-deep holes.
Drawings
FIG. 1 is a schematic view of an assembly structure of a pilot drill;
FIG. 2a is a schematic structural view of the latch member;
FIG. 2b is a schematic structural view of the clip pliers;
FIG. 3a is a schematic top view of the elastic clip connection tube;
FIG. 3b is a schematic front view of the elastic card connecting tube;
fig. 4a is a schematic view of the state that the spring clip is clamped into the card slot;
FIG. 4b is a schematic view showing the state in which the latch member is disengaged from the slot;
FIG. 5 is a schematic view of an assembly structure of the contact type aperture strain measuring device;
FIG. 6a is a schematic view of the contact member configuration;
FIG. 6b is a schematic view of the mounting structure of the stylus;
FIG. 7 is a schematic diagram of the internal structure of the contact type aperture strain measuring device;
FIG. 8 is a schematic view of a field measurement operation; wherein: a is a schematic diagram of the state of putting the outer pipe of the advanced drilling tool; b is a schematic view of the state of the inner pipe of the advancing drilling tool in the outer pipe of the advancing drilling tool; c is a schematic diagram of the state of drilling the test hole; d is a state schematic diagram of the contact type aperture strain measuring device; e is a schematic diagram of the state of the outer pipe of the advanced drilling tool for continuously drilling; f is a schematic diagram of the state that the outer pipe of the advanced drilling tool drives the contact type aperture strain measuring device to recover.
In the figure, 1-snap tube; 2-spring fastener, 3-outer tube of core drill, 4-extension rod of force transmission; 5-a righting ring; 6-a drill rod extension rod; 7-a centralizer; 8-a suspension ring; 9-salvaging the hanging part; 10-a circuit bin assembly; 11-a hole bottom centralizer; 12-measuring an extension rod; 13-a contact member; 14-impact protection components; 15-advancing the outer pipe of the drilling tool; 16-advancing the drill inner tube;
101-a card slot; 102-a snap connection tube;
21-drilling tool salvaging spearhead; 22-snap calipers; 23-a spacing ring; 24-wire form tension spring; 25-the outer cylinder of the spring clip frame; 26-a snap pull; 27-a caliper blade; 28-rotation pin; 29-caliper blade extension holes;
31-spring clip lug; 32-a limiting cylinder body;
301-annular inner step; 302-a centralizer exit orifice;
61-pressure spring; 62-a stylus; 63-limiting the cylinder body; 64-a limit groove; 65-notches; 66-step surface;
71-measuring fishing spearhead; 72-a sealing cover; 73-start switch; 74-data transfer interface;
81-wire line core-taking fisher.
Detailed Description
The present invention will be described in further detail with reference to examples for the purpose of facilitating understanding and practice of the invention by those of ordinary skill in the art, and it is to be understood that the present invention has been described in the illustrative embodiments and is not to be construed as limited thereto.
A rope core drill tool stress relief method ground stress testing device comprises a leading drill tool and a contact type aperture strain measuring device,
1. advanced drilling tool
The advance drill comprises an outer advance drill tube 15 and an inner advance drill tube 16,
leading drilling tool outer tube 15 is including playing card pipe 1 and rope core drilling tool outer tube 3, play card 1 one end of pipe and being connected with 3 one end of rope core drilling tool outer tube, the 3 other ends of rope core drilling tool outer tube are provided with annular inner step 301, hole 302 is worn out along forming the centralizer in the annular inner step 301, the one end outer wall that rope core drilling tool outer tube 3 was provided with annular inner step 301 is provided with the diamond granule, rope core drilling tool outer tube 3 is provided with the one end of annular inner step 301 and annular inner step 301 constitutes drilling tool outer tube drill bit. Diamond particles are embedded on the annular inner step 301 to protect the annular inner step 301 from being worn by rocks.
Leading drilling tool inner tube 16 includes bullet fastener 2, pass power extension rod 4, right ring 5, drilling rod extension rod 6 and centralizer 7, bullet fastener 2 sets up in bullet fastener 1, bullet fastener 1 inner wall set up with the draw-in groove 101 of bullet fastener 2 adaptation, bullet fastener 2 is connected with 4 one end of power extension rod, the 4 other ends of power extension rod are connected with centralizer 7 one end, the centralizer 7 other end passes the centralizer and passes the hole 302 and be connected with 6 one end of drilling rod extension rod, the drilling rod extension rod 6 other end is provided with pregnant diamond (test hole drill bit), the inner circle movable sleeve of righting ring 5 is established on centralizer 7, the outer lane of righting ring 5 and the interior wall connection of rope core drilling tool outer tube 3.
The spring clip part 2 comprises a spring clip frame outer cylinder 25, a spring clip pulling part 26 and a spring clip clamp 22,
the elastic caliper 22 comprises a rotary pin 28, a linear tension spring 24 and two caliper blades 27, the rotary pin 28 is connected with the inner wall of the outer cylinder body 25 of the elastic caliper frame, one end of each of the two caliper blades 27 is movably sleeved on the rotary pin 28, the other end of each of the two caliper blades 27 is connected with two ends of the linear tension spring 24, the middle of the linear tension spring 24 is connected with an elastic caliper pulling portion 26, the elastic caliper pulling portion 26 is connected with the drilling tool fishing head 21, and a part of the side wall of the outer cylinder body 25 of the elastic caliper frame, corresponding to the caliper blades 27, is provided with a caliper blade extending hole 29. One end of the outer cylinder 25 of the elastic clamping frame is connected with one end of the force transmission extension rod 4, one end of the outer cylinder 25 of the elastic clamping frame, which is connected with the force transmission extension rod 4, is sleeved with a limit ring 23, the inner ring of the suspension ring 8 is movably sleeved on one end of the force transmission extension rod 4, which is connected with the outer cylinder 25 of the elastic clamping frame, and the outer ring of the suspension ring 8 is connected with the inner wall of the outer pipe 3 of the rope core drill. The catch 101 corresponds to the position of the caliper blade extension aperture 29.
Pass power extension rod 4 and drilling rod extension rod 6 and be the hollow tube, be provided with in the centralizer 7 and overflow the passageway, the well kenozooecium both ends that pass power extension rod 4 respectively with overflow passageway one end and play the outer barrel 25 intercommunication of card frame, overflow the passageway other end and the well kenozooecium intercommunication of drilling rod extension rod 6, drilling rod extension rod 6 is provided with the one end of pregnant diamond of inlaying and has seted up out the liquid hole.
As a preferable scheme, the number of the elastic clamping tongs 22 is three, the elastic clamping pipe 1 comprises three elastic clamping connecting pipes 102, the elastic clamping connecting pipes 102 comprise a limiting cylinder 32 and two elastic clamping lugs 31, one end of the limiting cylinder 32 is an outer screw thread end, the other end is an inner screw thread end, the outer screw thread end of the limiting cylinder 32 is provided with two elastic clamping lugs 31, the two elastic clamping lugs 31 are symmetrically distributed along the axis of the limiting cylinder 32, the outer screw thread end of the limiting cylinder 32 is connected with the inner screw thread end of the limiting cylinder 32 of the adjacent elastic clamping connecting pipe 102 through screw threads, and two elastic clamping lugs 31 on the outer screw thread end of the limiting cylinder body 32 are inserted into the inner screw thread end of the limiting cylinder body 32 of the adjacent elastic clamping connecting pipe 102, the inner screw thread end of the elastic clamping connecting pipe 102 positioned at the end part is connected with one end of the outer pipe 3 of the rope core drill through screw threads, and the outer screw thread end of the other elastic clamping connecting pipe 102 positioned at the end part is connected with a standard drill rod with the diameter of 114mm through screw threads. Along the periphery of the outer screw thread end of the limiting cylinder 32, a clamping groove 101 is formed by a gap between the two elastic clamping lugs 31.
Each elastic caliper 22 comprises two caliper blades 27, a rotating pin 28 and a linear tension spring 24, one end of each caliper blade 27 is movably sleeved on the rotating pin 28 and can rotate around the rotating pin 28, when the elastic caliper pulling part 26 does not pull the linear tension spring 24, the two caliper blades 27 are outwards opened in a splayed shape under the action of the tension of the linear tension spring 24,
the caliper blades 27 are kept in an open state by the linear tension spring 24. Open calliper blade 27 passes the calliper blade and stretches out hole 29 and block into in the draw-in groove 101 of the 1 inner wall of bullet card pipe, draw-in groove 101 restriction calliper blade 27 and the circumference relative motion of bullet card pipe 1, when the standard drill rod drives bullet card pipe 1 rotatory, under the circumference limiting displacement of draw-in groove 101, it is rotatory to drive bullet fastener 2, it is rotatory that bullet fastener 2 is rotatory to drive biography power extension rod 4, it is rotatory to drive centralizer 7 and drill rod extension rod 6 to pass power extension rod 4, drill.
When needs are salvaged, can be through rope coring fisher 81 (rope coring fisher is the site operation tool, the drilling team all can the standard accessory instrument, not in this patent range) be connected with drilling tool fishing spearhead 21, fishing spearhead 21 through the pulling drilling tool, drive clip pulling portion 26, clip pulling portion 26 stimulates linear tension spring 24, two calliper blades 27 that linear tension spring 24 pulled calliper 22 fold and withdraw, two calliper blades 27 break away from draw-in groove 101 of 1 inner wall of clip pipe, clip 2 drives biography power extension rod 4, right ring 5 and drilling rod extension rod 6 and retrieve. The centralizer 7 comprises a centralizing butt and a centralizing butt, the centralizing butt is in shaft connection with the centralizing butt, the centralizing butt penetrates through a centralizer penetrating hole 302 formed by an annular inner step, the centralizing butt penetrates through the centralizing ring 5, the outer diameter of the centralizing butt is larger than that of the centralizing butt, the outer diameter of the centralizing butt is smaller than the inner diameter of the centralizing ring 5, and the outer diameter of the centralizing butt is smaller than that of the suspension ring 8. The overflowing channel penetrates through the righting thick end and the righting thin end.
The centralizing ring 5 is contacted with the centralizer 7 to keep a concentric shaft distribution state; the inner ring of the suspension ring 8 is contacted with the force transmission extension rod 4 to keep a concentric shaft distribution state; the side surface of the suspension ring 8 is contacted with the side surface of the limiting ring 23 to limit the insertion depth relation between the inner pipe 16 of the advance drill and the outer pipe 15 of the advance drill, the outer diameter of the limiting ring 23 is larger than the inner diameter of the suspension ring 8, when the limiting ring 23 is contacted with the suspension ring 8, the elastic clamp 22 can enter the elastic clamp pipe 1, the elastic clamp 22 is opened under the action of the linear tension spring 24, and the clamp blades 27 are kept in an opened state under the action of the linear tension spring 24. The expanded caliper blade 27 passes through the caliper blade extension hole 29 and is clamped in the clamping groove 101 on the inner wall of the snap pipe 1, and the circumferential rotation movement and the axial movement of the snap caliper 22 are limited.
Part materials and processing requirements: the three-bullet clamping chamber 1 of the outer pipe of the advanced drilling tool and the outer pipe 3 of the rope core drilling tool are both made of modulation steel, and the thread length of the thread part is not less than five threads, the thread length is rectangular, and the thread width is 5 mm; the end of the outer pipe 3 of the rope core drill, which is provided with the centralizer penetrating hole 302, is embedded with diamond for cutting rocks; the suspension ring 8 and the righting ring 5 are required to be made of bearing steel. The elastic clamping piece 2, the force transmission extension rod 4 and the drill rod extension rod 6 are all made of modulation steel, the thread length of the thread part is not less than five threads, the thread part is rectangular, and the tooth pitch is 5 mm; the centralizer 7 is made of bearing steel, and the front end of the drill rod extension rod 6 must be protected by impregnated diamonds. The inner pipe of the advanced drilling tool and the outer pipe of the advanced drilling tool are assembled, and the processing gap between the centering ring 5 and the centering device 7 is required to be not more than 1 mm. The external pipe of the advanced drilling tool must be demagnetized before leaving the factory.
2. Contact type aperture strain measuring device
The contact type aperture strain measuring device comprises a fishing suspension component 9, a circuit bin component 10, a measuring extension rod 12, a contact component 13 and an impact-proof component 14 which are sequentially connected. One end of the circuit bin component 10 connected with the measuring extension rod 12 is sleeved with a hole bottom centralizer 11.
The contact member 13 includes: a compression spring 61, a contact pin 62, a limit cylinder 63 and a limit groove 64. In the contact member 13, the positional combination relationship is expressed as: the limiting cylinder 63 is annularly and uniformly distributed with contact pin holes for installing the contact pins 62, the contact pins 62 are inserted in the limiting cylinder 63, and the contact pins 62 are kept in an outward extending state under the action of the pressure spring 61. The connection relationship is represented as: the contact pin 62 is provided with a multi-stage step surface from the needle tip to the needle head, the pressure spring 61 is sleeved in the contact pin 62, one end of the pressure spring 61 is contacted with the step surface at the needle head end part of the contact pin 62, and the other end of the pressure spring 61 is contacted with the bottom of a contact pin hole of the limiting cylinder 63; after the pressure spring 61 and the contact pin 62 are arranged in the contact pin hole, a limiting groove 64 is arranged, the limiting groove 64 is a thin-walled cylinder with a notch, the outer diameter of the limiting groove 64 is slightly smaller than the inner diameter of the limiting cylinder 63, and the notch 65 of the limiting groove 64 is blocked on the step surface 66 of the contact pin 62 to limit the moving range of the contact pin 62. The stylus 62 moves toward the inside of the limit cylinder 63 by the force applied to the needle, and when the force applied to the stylus 62 is released, the stylus 62 moves toward the outside of the limit cylinder 63, and the stylus 62 stops moving outward when the stepped surface of the stylus 62 contacts the limit groove 64. One end of the limiting cylinder 63 is connected with the measuring extension rod 12 through a screw thread, and the other end of the limiting cylinder 63 is embedded with an impact-proof component 14.
The fishing suspension member 9 includes: a measuring fishing spearhead 71 and a sealing cover 72. The measuring fishing spearhead 71 is connected with one side of the sealing cover 72, the other side of the sealing cover 72 is provided with a thread end in the sealing cover, and the measuring fishing spearhead 71 and the sealing cover 72 are on the same central axis.
An aviation plug-in male connector is installed at one end of the starting switch 73, a switch connecting outer screw thread is arranged on the periphery of the starting switch 73, a first connecting end and a second connecting end are arranged at two ends of the data transmission interface 74 respectively, a transmission interface outer screw thread matched with the screw thread end in the sealing cover is arranged on the periphery of the first connecting end, a transmission interface inner screw thread matched with the switch connecting outer screw thread is arranged in the first connecting end, and an aviation plug-in female connector matched with the aviation plug-in male connector is further arranged in the first connecting end. The second link passes through the screw thread to be connected and screw thread department is provided with the seal ring groove with circuit storehouse part 10 one end, plays waterproof sealing effect, and the circuit storehouse part 10 other end passes through the screw thread to be connected with measuring extension rod 12 one end, and circuit storehouse part 10 overlaps with the one end periphery that measures extension rod 12 and is equipped with conical hole bottom centralizer 11, measures the extension rod 12 other end and passes through the screw thread to be connected with contact part 13 one end, and contact part 13 other end is inlayed and is had protecting against shock part 14.
The switch connection outer screw thread on the periphery of the starting switch 73 can rotate to enter the transmission interface inner screw thread of the first connection end, and when the starting switch 73 is screwed in place, the aviation plug-in male connector is connected with the aviation plug-in female connector; the pin 1, 2 of aviation plug-in components male joint is as the short circuit pin, 1, 2 pin short circuits, and 1, 2 pin that aviation plug-in components female joint corresponds are the switch pin, and the anodal circuit that opens circuit of switch pin control battery, and after aviation plug-in components male joint and aviation plug-in components female joint contacted, 1, 2 pin short circuit aviation plug-in components female joint's of aviation plug-in components male joint, realize the short circuit of switch pin, play the closed effect of switch, make the battery supply power for data collection station. And a displacement sensing component is arranged in the inner space of the measuring extension rod 12 and senses the radial displacement of the contact part 13. The data acquisition unit is connected with the displacement sensing component to acquire the radial displacement of the contact part 13, and the data acquisition unit, the displacement sensing component and the contact part 13 can be realized by the existing equipment.
The sequence of installation of the data collector in the circuit bin assembly 10 starting and stopping is represented as: if the data acquisition unit is started, the starting switch 73 is connected to the data transmission interface 74, the aviation plug-in male connector is connected with the aviation plug-in female connector, and then the screw thread end in the sealing cover of the sealing cover 72 is connected with the outer screw thread of the transmission interface of the data transmission interface 74. If the data acquisition device stops, the sealing cover 72 is separated from the data transmission interface 74, and then the starting switch 73 is separated from the data transmission interface 74, so that the power supply of the internal battery can be cut off.
In fig. 5, the basic implementation method of the contact type aperture strain measuring device to perform measurement can be summarized as follows: the measuring fishing spearhead 71 is connected with the rope coring fisher 81, the contact type aperture strain measuring device is sent to a testing position, the measuring extension rod 12 penetrates through the centralizer penetrating hole 302, and the hole bottom centralizer 11 is clamped on the centralizer penetrating hole 302; the contact pin 62 moves towards the inside of the limiting cylinder 63 under the action of stress, a displacement sensing component is installed in the internal space of the measuring extension rod 12, the displacement condition of the needle point of the contact pin 62 is captured, data information of radial displacement is transmitted to a data collector inside the circuit bin component 10 through a data line, a battery and the data collector are installed in the internal space of the circuit bin component 10, the data is connected with a memory card through the data collector, and the memory card is connected with data reading pins of aviation plug-in female connectors in the data transmission interface 74 except for pins 1 and 2. After the field measurement is completed, the wire-line coring fisher 81 is lowered along a drill rod, the measuring fishing spearhead 71 is grasped and connected with each other, the contact type aperture strain measuring device is pulled to the ground through a steel wire rope, the starting switch 73 is rotated to enable the starting switch 73 to be separated from the data transmission interface 74, the aviation plug-in female connector on the data transmission interface 74 is exposed, a worker prepares a data adapter with two ends respectively being an aviation plug-in male connector and a USB interface, a data reading pin of the aviation plug-in male connector of the data adapter corresponds to a data reading pin of the aviation plug-in female connector on the data transmission interface 74, the USB interface is correspondingly connected with the data reading pin of the aviation plug-in male connector of the data adapter, the aviation plug-in male connector of the data adapter is connected with the aviation plug-in female connector on the data transmission interface 74, and the USB interface of the data adapter, the computer reads the memory card in the circuit bin part 10, and the data information of the radial displacement can be led into the computer.
Part materials and processing requirements: the fishing suspension component 9, the circuit bin component 10, the hole bottom centralizer 11, the measuring extension rod 12 and the contact component 13 are all made of stainless steel. The thread part requires to adopt fine teeth thread, the tooth pitch is 1mm, sealing ring grooves are required to be arranged at the joints of all the thread parts, and the compression ratio of the sealing ring is controlled to be 70-80%. The displacement range of the contact pin 62 in the contact part 13 and the diameter of the limit cylinder 63 should be fully considered to the diameter of the hole formed by impregnated diamond cutting rock at the tail end of the drill rod extension rod 6, the sum of the maximum displacement of the contact pin 62 extending out of the outer diameter of the limit cylinder 63 and the diameter of the limit cylinder 63 must be larger than the diameter of the hole, and the diameter of the limit cylinder 63 must be smaller than the diameter of the hole. Impact resistant member 14 must be made of a flexible material such as nylon MC 66.
The advance drilling tool and the contact type aperture strain measuring device are not connected, but are matched with each other to complete the process of stress relief method ground stress test. The outer pipe of the advanced drilling tool can be directly connected with a drill rod to transmit torque transmitted by the drill rod, and can cut rocks to form a ring-assembled core so as to relieve stress; the inner pipe of the advanced drilling tool has the effects that the inner pipe can be connected with the outer pipe of the advanced drilling tool, and the diamond on the inner pipe of the advanced drilling tool is driven by the outer pipe of the advanced drilling tool to rotationally cut rocks at the hole bottom of a drilled hole, so that a test hole with fixed depth and diameter is formed at the hole bottom; the contact type aperture strain measuring device has the effects that after the inner pipe of the advanced drilling tool drills to form a test hole, the contact type aperture strain measuring device is installed in the test hole, so that the contact pin 62 on the contact pin part 13 contacts the wall of the test hole, the displacement of the hole wall is transmitted through the contact pin 62, and the deformation process of the hole wall of the drill hole before and after stress relief is recorded.
3. The device and the method for testing the ground stress by the method for relieving the stress of the rope core drill tool comprise the following steps:
in a first step, the outer pipe 15 of the advance drill and the inner pipe 16 of the advance drill are assembled, a drill rod with a diameter of 114mm is screwed with the elastic catch pipe 1 of the outer pipe 15 of the advance drill, the outer pipe 15 of the advance drill is hung into the borehole using the drill rod, and the outer pipe 15 of the advance drill is placed one meter away from the bottom of the borehole as shown in fig. 8 a.
And secondly, connecting the rope core fisher to a drilling tool fishing spear head 21 of the inner pipe 16 of the advanced drilling tool, driving the rope core fisher by a winch, hanging the inner pipe 16 of the advanced drilling tool into a drill rod (in the drilling engineering, the drill rod is a standard geological drill rod which enables the drilling tool and the drilling tool to be connected and transmits torque, pressure, water pressure and slurry), lowering the rope core fisher until the inner pipe 16 of the advanced drilling tool is contacted with the outer pipe 15 of the advanced drilling tool, enabling the elastic clamping piece 2 of the inner pipe 16 of the advanced drilling tool to enter a clamping groove 101 in the inner wall of an elastic clamping pipe 1 of the outer pipe 15 of the advanced drilling tool, then keeping the winch locked, installing a safety releasing device to enable the rope core fisher to be separated from the fishing tool fishing spear head 21, and after the rope core fisher is separated from the fishing spear head 21 of.
Thirdly, the drill drives the drill rod, the drill rod drives the inner pipe of the advanced drilling tool and the outer pipe of the advanced drilling tool to be placed at the bottom of the hole, the tail end of the extension rod 6 of the drill rod is contacted with the rock, then the drilling machine is started, a slurry pump is started, the drilling fluid is conveyed into the drill rod through the slurry pump and flows between the inner pipe of the advanced drilling tool and the outer pipe of the advanced drilling tool through the drill rod, at the positions of the suspension ring 8 and the limiting ring 23, the flow area is greatly reduced to form a suppressed pressure, the drilling fluid is forced to enter the outer cylinder 25 of the elastic clamping frame through the caliper blade extending hole 29, the outer cylinder 25 of the elastic clamping frame is communicated with the force transmission extension rod 4, the force transmission extension rod 4 is communicated with the drill rod extension rod 6 through the centralizer 7, the force transmission extension rod 4 and the drill rod extension rod 6 are hollow, and the drilling fluid can sequentially pass through the force transmission extension rod 4, the centralizer 7 and the drill rod extension rod 6 to form drilling fluid circulation at the tail end of the drill rod extension rod 6; and then, starting drilling pore-forming work of the test hole, wherein the drilling machine drives the drill rod to rotate, the drill rod drives the outer pipe of the advanced drilling tool to rotate, and the outer pipe of the advanced drilling tool drives the inner pipe of the advanced drilling tool to rotate, so that diamond-impregnated diamond at the tail end of the drill rod extension rod 6 starts to cut rocks, the drilling fluid at the tail end circularly takes away rock powder, the test hole is formed at the bottom of the drill hole until the centralizer 7 is in contact with the rocks, pressure is formed at the positions of the rocks and the centralizer 7 when the centralizer 7 is in contact with the rocks, the pump pressure rise can be obviously seen through a pump pressure meter of a slurry pump, the drilling can be stopped at the moment, and at the moment.
Fourthly, lowering the rope coring fisher by using a winch to connect the rope coring fisher with the fishing spearhead 21 of the drilling tool, pulling the fishing spearhead 21 of the drilling tool by using the winch, lifting the fishing spearhead 21 of the drilling tool, separating the snapping clamp 22 from the three-snapping chamber 1, and fishing the inner pipe of the leading drilling tool by using the rope coring fisher; after fishing, separating the rope coring fisher from the fishing spearhead 21 of the drilling tool, connecting the rope coring fisher with the measuring fishing spearhead 71 of the contact type aperture strain measuring device, hoisting the contact type aperture strain measuring device into a drill rod by using the rope coring fisher, and lowering the rope coring fisher until the measuring extension rod 12, the contact part 13 and the impact prevention part 14 of the contact type aperture strain measuring device enter a test hole; the hoist is then held locked and the safety release device is installed and free fall movement is made along the wire line until the rope coring fisher is reached, effecting disengagement of the rope coring fisher from the measuring fishing spearhead 71 as shown in figure 8 d. At this time, the contact pin 62 in the contact part 13 will contact with the hole wall of the test hole, the displacement sensing component senses the position of the contact pin 62, the distance between the hole wall of the test hole and the central axis of the contact part 13 is obtained, and the data collector records the position of the contact pin 62 and stores the position in the memory card.
Fifthly, starting the drilling machine, starting a slurry pump to enable the drilling machine to drive the drill rod to rotate, enabling the drill rod to drive the advanced drilling tool outer pipe 15 to rotate, enabling the drill bit of the drilling tool outer pipe to start cutting rocks, keeping a drilling state, enabling the drilling fluid to enter the drill rod through the slurry pump, and forming drilling fluid circulation at the drill bit of the drilling tool outer pipe; and calculating the drilling depth of the outer pipe of the advanced drilling tool at the bottom of the hole by measuring the length of the residual drill rod on the upper part of the wellhead, and stopping drilling when the drilling depth exceeds the depth of the test hole, as shown in fig. 8 e. At the moment, a circular cylindrical core is drilled at the bottom of the hole, the periphery of the circular cylindrical core is completely separated from rock on the hole wall, the ground stress in the circular cylindrical core is released, so that the hole wall of the test hole is subjected to strain displacement, the contact pin 62 in the contact part 13 is in close contact with the hole wall of the test hole under the action of the pressure spring 61, the contact pin 62 is also driven to be subjected to strain displacement correspondingly when the strain displacement is generated on the hole wall of the test hole, the deformation process of the hole wall is sensed by the displacement sensing component and is collected by the data collector and stored in the memory card.
Sixthly, starting the drilling machine, lifting a drill rod, driving the outer pipe 15 of the advanced drilling tool to move upwards by the drill rod, when the annular inner step 301 of the outer pipe 3 of the rope core drilling tool moves to the position of the sealing cover 72 of the contact type aperture strain measuring device, the sealing cover 72 is contacted with the annular inner step 301 of the outer pipe 3 of the rope core drilling tool, because the diameter of the sealing cover 72 is larger than the inner diameter of the annular inner step 301, namely the diameter of the sealing cover 72 is larger than the diameter of the centralizer penetrating hole 302, and the sealing cover 72 is driven to move upwards when the outer pipe 15 of the advanced drilling tool moves upwards, the drill bit can drive the drill rod to drive the outer pipe 15 of the advanced drilling tool to move upwards, the drill rod drives the outer pipe 15 of the advanced drilling tool to drive the contact type aperture; when the contact type aperture strain measuring device is pulled out of the test hole, the drill rod is kept still, the rope coring fisher is lowered by the winch, the rope coring fisher is connected with the measuring fishing spearhead 71, the measuring fishing spearhead 71 is pulled by the winch, the contact type aperture strain measuring device is lifted to the wellhead, and the recovery of the contact type aperture strain measuring device is realized.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described may occur to those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined by the appended claims.
Claims (1)
1. The ground stress testing method is characterized by comprising the following steps:
firstly, assembling an outer pipe (15) of the advanced drilling tool and an inner pipe (16) of the advanced drilling tool, connecting a drill rod with an elastic clamping pipe (1) of the outer pipe (15) of the advanced drilling tool through screw threads, hoisting the outer pipe (15) of the advanced drilling tool into a well drilling well by using the drill rod,
the outer pipe (15) of the advanced drilling tool comprises an elastic clamping pipe (1) and an outer pipe (3) of the rope core drilling tool, one end of the elastic clamping pipe (1) is connected with one end of the outer pipe (3) of the rope core drilling tool, the other end of the outer pipe (3) of the rope core drilling tool is provided with an annular inner step (301), the inner edge of the annular inner step (301) forms a centralizer penetrating hole (302), the outer wall of one end of the outer pipe (3) of the rope core drilling tool, which is provided with the annular inner step (301), is provided with diamond particles, one end of the outer pipe (3) of the rope core drilling tool, which is provided with the annular inner step (301), and,
the advanced drilling tool inner tube (16) comprises an elastic clamping piece (2), a force transmission extension rod (4), a centralizing ring (5), a drilling rod extension rod (6) and a centralizer (7), the elastic clamping piece (2) is arranged in the elastic clamping tube (1), the inner wall of the elastic clamping tube (1) is provided with a clamping groove (101) matched with the elastic clamping piece (2), the elastic clamping piece (2) is connected with one end of the force transmission extension rod (4), the other end of the force transmission extension rod (4) is connected with one end of the centralizer (7), the other end of the centralizer (7) penetrates through a centralizer penetrating hole (302) to be connected with one end of the drilling rod extension rod (6), the other end of the drilling rod extension rod (6) is provided with impregnated diamonds, the movable inner ring of the centralizing ring (5) is sleeved on the centralizer (7), the outer ring of the centralizing ring (5) is connected with the inner wall of the rope core drilling tool outer,
the spring clip piece (2) comprises an outer cylinder body (25) of a spring clip frame, a spring clip pulling part (26) and a spring clip clamp (22),
the elastic caliper (22) comprises a rotating pin (28), a linear tension spring (24) and two caliper blades (27), the rotating pin (28) is connected with the inner wall of an outer cylinder body (25) of the elastic caliper frame, one ends of the two caliper blades (27) are movably sleeved on the rotating pin (28), the other ends of the two caliper blades (27) are respectively connected with two ends of the linear tension spring (24), the middle part of the linear tension spring (24) is connected with an elastic caliper pulling part (26), the elastic caliper pulling part (26) is connected with a drilling tool spear head (21), a part of the side wall of the outer cylinder body (25) of the elastic caliper frame, which corresponds to the caliper blades (27), is provided with a caliper blade extending hole (29), one end of the outer cylinder body (25) of the elastic caliper frame is connected with one end of a force transmission extension rod (4), a limit ring (23) is sleeved on one end of the outer cylinder body (25) of the elastic caliper frame and one end of the force transmission extension rod (4), an inner ring (4) of a movable force transmission rod (8) is sleeved on one, the outer ring of the suspension ring (8) is connected with the inner wall of the outer pipe (3) of the rope core drill, the clamping groove (101) corresponds to the position of the caliper blade extending hole (29),
the force transmission extension rod (4) and the drill rod extension rod (6) are hollow tubes, a flow passage is arranged in the centralizer (7), two ends of a hollow part of the force transmission extension rod (4) are respectively communicated with one end of the flow passage and the outer cylinder body (25) of the elastic clamping frame, the other end of the flow passage is communicated with the hollow part of the drill rod extension rod (6), one end of the drill rod extension rod (6) provided with impregnated diamonds is provided with a liquid outlet hole,
the centralizer (7) comprises a centralizing thick end and a centralizing thin end, the centralizing thick end and the centralizing thin end are in shaft connection, the centralizing thin end passes through a centralizer penetrating hole (302) formed by an annular inner step, the centralizing thick end passes through the centralizing ring (5), the outer diameter of the centralizing thick end is larger than that of the centralizing thin end, the outer diameter of the centralizing thick end is smaller than the inner diameter of the centralizing ring (5), the outer diameter of the centralizing thick end is also smaller than that of the suspension ring (8), and the overflow channel penetrates through the centralizing thick end and the centralizing thin end,
secondly, the rope core fisher is connected to a drilling tool fishing spearhead (21) of an inner pipe (16) of the advanced drilling tool, the inner pipe (16) of the advanced drilling tool is hung in a drill rod, the rope core fisher is lowered until a spring clamping piece (2) of the inner pipe (16) of the advanced drilling tool enters a clamping groove (101) of the inner wall of a spring clamping pipe (1) of an outer pipe (15) of the advanced drilling tool, the rope core fisher is separated from the drilling tool fishing spearhead (21),
thirdly, the drilling machine drives a drilling rod, the drilling rod drives an inner pipe of the advanced drilling tool and an outer pipe of the advanced drilling tool to be placed at the bottom of a hole, the tail end of a drilling rod extension rod (6) is in contact with rocks, then the drilling machine is started, a slurry pump is started, drilling fluid is sent into the drilling rod through the slurry pump and flows between the inner pipe of the advanced drilling tool and the outer pipe of the advanced drilling tool through the drilling rod, and the drilling fluid sequentially passes through a caliper blade extending hole (29), an elastic clamping frame outer cylinder body (25), a force transmission extension rod (4), a centralizer (7) and the drilling rod extension rod (6) to reach the tail end of; the drill drives the drill rod to rotate, the drill rod drives the outer pipe of the advanced drilling tool to rotate, the outer pipe of the advanced drilling tool drives the inner pipe of the advanced drilling tool to rotate, diamond-impregnated at the tail end of the extension rod (6) of the drill rod starts to cut rocks until the centralizer (7) is contacted with the rocks, a test hole is formed at the bottom of a drill hole, when the centralizer (7) is contacted with the rocks, the drilling is stopped,
fourthly, lowering the rope coring fisher to enable the rope coring fisher to be connected with the drilling tool fishing spearhead (21), lifting the drilling tool fishing spearhead (21) through the rope coring fisher so as to enable the calipers (22) to be separated from the calipers (1), separating the advanced drilling tool inner pipe from the drilling tool fishing spearhead (21) through the rope coring fisher, then connecting the rope coring fisher with the measuring fishing spearhead (71) of the contact type aperture strain measuring device, hoisting the contact type aperture strain measuring device into the drilling rod through the rope coring fisher, and lowering the rope coring fisher until a measuring extension rod (12), a contact part (13) and an impact preventing part (14) of the contact type aperture strain measuring device enter a testing hole; the rope coring fisher is separated from the measuring fishing spearhead (71), the distance between the wall of the testing hole and the central axis of the contact part (13) is measured through the contact part (13),
the contact type aperture strain measuring device comprises a salvaging suspension part (9), a circuit bin part (10), a measuring extension rod (12), a contact part (13) and an anti-impact part (14) which are connected in sequence,
the salvaging hanging part (9) comprises a measuring salvaging spearhead (71) and a sealing cover (72), the measuring salvaging spearhead (71) is connected with one side of the sealing cover (72), the other side of the sealing cover (72) is provided with a sealing cover inner screw thread end, one end of a starting switch (73) is provided with an aviation plug-in male connector, the periphery of the starting switch (73) is provided with a switch connecting outer screw thread, the two ends of a data transmission interface (74) are respectively a first connecting end and a second connecting end, the periphery of the first connecting end is provided with a transmission interface outer screw thread matched with the sealing cover inner screw thread end, the first connecting end is internally provided with a transmission interface inner screw thread matched with the switch connecting outer screw thread, the first connecting end is internally provided with an aviation plug-in female connector matched with the aviation plug-in male connector, the second connecting end is connected with one end of the circuit bin part (10) through the screw thread, the other end of the circuit bin part (10), the periphery of one end of the circuit bin component (10) connected with the measuring extension rod (12) is sleeved with a conical hole bottom centralizer (11), the other end of the measuring extension rod (12) is connected with one end of a contact component (13) through a screw thread, the other end of the contact component (13) is embedded with an anti-impact component (14), the diameter of a sealing cover (72) is larger than the inner diameter of the annular inner step (301),
fifthly, starting the drilling machine, starting a slurry pump to enable the drilling machine to drive a drill rod to rotate, enabling the drill rod to drive an outer pipe (15) of the advanced drilling tool to rotate, enabling a drill bit of the outer pipe of the drilling tool to start cutting rocks, keeping a drilling state, enabling drilling fluid to enter the drill rod through the slurry pump, calculating the drilling depth of the outer pipe of the advanced drilling tool at the bottom of a hole by measuring the length of the residual drill rod at the upper part of the wellhead, stopping drilling when the drilling depth exceeds the depth of a test hole, drilling at the bottom of the hole to form an annular columnar core, enabling the periphery of the annular columnar core to be completely separated from rocks on the wall of the hole, and measuring the strain displacement generated,
sixthly, starting the drilling machine, lifting the drill rod, the drill rod drives the outer pipe (15) of the advanced drilling tool to move upwards, the annular inner step (301) of the outer pipe (3) of the rope core drilling tool moves to the position of the sealing cover (72) of the contact type aperture strain measuring device, the sealing cover (72) is driven to move upwards, the contact type aperture strain measuring device is pulled out from the test hole, the contact type aperture strain measuring device is pulled out of the test hole, then the drill rod is kept still, the rope core fishing tool is connected with the measuring fishing spearhead (71), the contact type aperture strain measuring device is lifted to the wellhead through the rope core fishing tool, and the recovery of the contact type aperture strain measuring device is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811540925.XA CN109577971B (en) | 2018-12-17 | 2018-12-17 | Ground stress testing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811540925.XA CN109577971B (en) | 2018-12-17 | 2018-12-17 | Ground stress testing device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109577971A CN109577971A (en) | 2019-04-05 |
| CN109577971B true CN109577971B (en) | 2020-12-01 |
Family
ID=65929739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811540925.XA Active CN109577971B (en) | 2018-12-17 | 2018-12-17 | Ground stress testing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109577971B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907079B (en) * | 2019-11-18 | 2020-10-09 | 中国矿业大学(北京) | Dynamic monitoring system and method for mining stress |
| CN110907086B (en) * | 2019-11-27 | 2020-10-09 | 中国科学院武汉岩土力学研究所 | Three-dimensional ground stress determination method based on borehole wall surface displacement measurement |
| CN112161733B (en) * | 2020-08-20 | 2021-11-26 | 大连理工大学 | Embedded pull pressure monitoring device |
| CN112129437B (en) * | 2020-08-20 | 2021-11-02 | 西安铁路信号有限责任公司 | Embedded stress measurement method |
| CN112816336B (en) * | 2021-01-04 | 2022-03-29 | 中国科学院武汉岩土力学研究所 | In-situ ground stress testing device and method based on pressurization stress relief |
| CN113006783A (en) * | 2021-04-09 | 2021-06-22 | 湖南科技大学 | In-situ detection process suitable for horizontal drilling machine |
| CN113532349B (en) * | 2021-07-13 | 2023-03-21 | 淮北师范大学 | Construction engineering uses multi-functional measuring tool |
| CN113605886B (en) * | 2021-09-30 | 2022-01-14 | 中国科学院武汉岩土力学研究所 | Deep drilling complex environment local wall stress relieving method test system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581219B (en) * | 2008-05-16 | 2012-10-17 | 中国科学院力学研究所 | Device and method for measurement while drilling of ground stress |
| US20100276208A1 (en) * | 2009-04-29 | 2010-11-04 | Jiinjen Albert Sue | High thermal conductivity hardfacing for drilling applications |
| CN103790582A (en) * | 2014-01-26 | 2014-05-14 | 北京雷雨达科技有限公司 | Geostress measuring device and method |
| CN105841855A (en) * | 2016-05-06 | 2016-08-10 | 中国矿业大学(北京) | Novel ground stress test device |
| CN205642679U (en) * | 2016-05-06 | 2016-10-12 | 中国矿业大学(北京) | Novel ground stress test device |
| CN205714149U (en) * | 2016-06-12 | 2016-11-23 | 中国地震局地壳应力研究所 | Hydraulic fracturing stress measurement device |
| CN207989022U (en) * | 2018-04-02 | 2018-10-19 | 长江水利委员会长江科学院 | A kind of detecting earth stress device based on the deformation measurement of gun drilling aperture |
-
2018
- 2018-12-17 CN CN201811540925.XA patent/CN109577971B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109577971A (en) | 2019-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109577971B (en) | Ground stress testing device and method | |
| CN112816336B (en) | In-situ ground stress testing device and method based on pressurization stress relief | |
| US10450801B2 (en) | Casing windowing method and tool using coiled tubing | |
| CN111827987A (en) | Ground stress testing assembly and using method | |
| CN112593882B (en) | Rope directional coring drilling device with composite function | |
| CN114837605B (en) | Oil increasing method for casing damage well hole-repairing-free suspension | |
| CN203847098U (en) | Underground temperature and pressure parameter measurement device | |
| CN113006783A (en) | In-situ detection process suitable for horizontal drilling machine | |
| CN108693069B (en) | Drilling coal dust gas desorption characteristic parameter measurement while drilling device | |
| CN210105822U (en) | Leakage blocking device while drilling | |
| CN215927324U (en) | Horizontal well pumping soluble bridge plug and perforation combined construction process detection device | |
| CN206329302U (en) | A kind of novel wellhead pressure test plug and abrasionproof bushing fetching tool | |
| CN213330991U (en) | Cable fishing tool for fishing well-falling instrument | |
| CN210289656U (en) | Coiled tubing logging instrument dropout release | |
| CN203239323U (en) | Lower seat key short section | |
| CN203655206U (en) | Apparatus of recycling packer for casing-head gas drilling | |
| CN111648763A (en) | While-drilling well leakage prediction and leakage point measurement nipple | |
| CN212958606U (en) | Ground stress test assembly | |
| CN213016267U (en) | Returnable double-slip overshot | |
| CN221256715U (en) | External cutting and lifting equipment for long-section internal and external communicating tool under pressure operation pipe | |
| WO2022222200A1 (en) | Network neural cable for oil-gas well mining and directional measurement system | |
| CN114562228B (en) | Drilling accident handling device for improving well integrity | |
| CN215108750U (en) | Drill bit for rotary drilling of stratum | |
| CN201092852Y (en) | Throwing-dragging type unaflow valve blocking machine | |
| CN221078127U (en) | Underground mine room safety sampling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |