CN118148668A - Tunnel top-falling grouting repair system and use method thereof - Google Patents
Tunnel top-falling grouting repair system and use method thereof Download PDFInfo
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- CN118148668A CN118148668A CN202410258462.7A CN202410258462A CN118148668A CN 118148668 A CN118148668 A CN 118148668A CN 202410258462 A CN202410258462 A CN 202410258462A CN 118148668 A CN118148668 A CN 118148668A
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- plugging
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008439 repair process Effects 0.000 title claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 41
- 238000007569 slipcasting Methods 0.000 claims description 67
- 239000011435 rock Substances 0.000 claims description 50
- 239000007788 liquid Substances 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000012528 membrane Substances 0.000 claims description 17
- 238000004873 anchoring Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 14
- 238000005728 strengthening Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000005253 cladding Methods 0.000 claims description 6
- 230000007306 turnover Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 21
- 230000002787 reinforcement Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 5
- 238000005422 blasting Methods 0.000 description 4
- 239000012634 fragment Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a tunnel top-up grouting repair system which comprises bearing columns, bearing net plates, grouting bearing pipes, grouting plugging pipes, guide pipes and grouting plugging vehicles, wherein the bearing net plates are connected with the top of a tunnel through a plurality of grouting bearing pipes, the grouting bearing pipes are respectively communicated with the grouting plugging vehicles through guide pipes, the guide pipes are respectively embedded in the bearing net plates, each guide pipe is internally provided with one grouting plugging pipe coaxially distributed with the guide pipes, each grouting plugging pipe is respectively communicated with the grouting plugging vehicle through the guide pipes, and the lower end surfaces of the grouting bearing pipes are respectively connected with one bearing column. The repairing and reinforcing method comprises the steps of preliminary bearing, reinforced bearing in the roof-falling area, and plugging and positioning. The invention has strong environment adaptability, good universality and construction flexibility, can realize rapid reinforcement of the roof of the roadway, improves the stability and safety of the construction of the top of the roadway, and can effectively reduce the labor intensity and the cost of construction operation in construction.
Description
Technical Field
The invention relates to a roadway top-falling grouting repair system and a use method thereof, and belongs to the technical field of grouting plugging construction equipment.
Background
In the operations such as mining resource exploitation and tunnel construction, because factors such as geological structure deformation, the tunnel takes place when roof fall accident, extremely hidden danger has been caused for production safety, to this problem, multiple tunnel roof fall restoration technique or equipment has been developed at present, but at present when carrying out grouting restoration, traditional grouting technique and equipment that all adopted, although can satisfy actual construction operation's needs, but lead to grouting operation efficiency lower, can't in time carry out timely effectual safety protection to roof fall structure, when simultaneously grouting restoration operation, there is grouting equipment to receive operational environment restriction in also different degree, construction work degree of difficulty, construction intensity of labour and cost are also relatively higher, thereby when leading to current tunnel roof fall restoration operation, often easily damage the increase because of can not in time carrying out the damage prevention, simultaneously also lead to the risk improvement of secondary disaster risk emergence.
Therefore, in view of the current situation, there is a need to develop plugging and repairing equipment and a corresponding plugging and repairing process, which can be applied to various roadway structures, and has simple construction process and good equipment operation flexibility and safety.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a tunnel top-falling grouting repair system and a method thereof, which overcome the defects and meet the requirements of actual equipment operation.
In order to achieve the above object, the present invention is realized by the following technical scheme:
A tunnel top-burst grouting repair system comprises bearing upright posts, bearing net plates, grouting bearing pipes, grouting plugging pipes, guide pipes and grouting plugging vehicles, wherein the bearing net plates are of grid plate structures with rectangular cross sections, the bearing net plates are coated on the outer sides of the tops of the tunnels and are distributed parallel to the tops of the tunnels, the bearing net plates are connected with the tops of the tunnels through a plurality of grouting bearing pipes, the grouting bearing pipes are uniformly distributed at the edges of the bearing net plates around the centers of the bearing net plates, at least 80% of the effective length of the upper half parts of the grouting bearing pipes is embedded in rock walls of the tops of the tunnels, the axes of the grouting bearing pipes form an included angle of 30-90 degrees with the bearing net plates, simultaneously, the grouting bearing pipes are respectively communicated with the grouting plugging vehicles through guide pipes, a plurality of guide pipes are uniformly distributed around the axes of the bearing net plates, the guide pipes are respectively embedded in the bearing net plates, simultaneously, the upper half parts of the guide pipes are embedded in the rock walls of the tops of the tunnels through the bearing net plates, the lower half parts of the guide pipes are located below the lower end faces of the bearing net plates, simultaneously, grouting pipes which are coaxially distributed are respectively arranged in the rock walls of the tops of the tunnels, at least 80% of the effective length of the grouting bearing pipes is embedded in the rock walls of the bearing net plates, the rock walls of the effective length of the grouting bearing pipes form an included angle of 40-90 degrees with the corresponding to the corresponding grouting plugging vehicles, and the axes are respectively connected with the corresponding grouting plugging vehicles, and the axes are connected with the bearing upright posts, and the grouting plugging vehicles are respectively, the grouting plugging vehicles are connected with the corresponding to the corresponding grouting sealing vehicles, and the grouting sealing vehicles.
Further, bear the stand including bearing base, tilting mechanism, hydraulic prop, bear post, staple bolt, wherein bear the base and be connected and parallel distribution with the tunnel bottom, bear the base up end and establish tilting mechanism to it is articulated with hydraulic prop lower half through tilting mechanism, just hydraulic prop axis is 0 ~ 90 contained angle with bearing the base up end, hydraulic prop up end is connected and coaxial distribution with a bear the post, bear the post lateral surface and establish the direction spout to through sliding connection between direction spout and two at least staple bolts, staple bolt axis and bear post axis parallel distribution, and each staple bolt is along bearing post axis direction equipartition, bear the post through staple bolt and slip casting carrier connection, and the staple bolt cladding is outside the slip casting carrier and with slip casting carrier between coaxial distribution.
Further, the grouting bearing pipe comprises a connecting pipe head, a grouting anchor rod, a reinforcing plate, rupture membranes, an anchoring agent and a sliding block, wherein the upper end face and the lower end face of the grouting anchor rod are connected with the connecting pipe head and are communicated with a guide pipe through the connecting pipe head, the outer side face of the grouting anchor rod is connected with a hoop of a bearing upright post, a plurality of grouting openings uniformly distributed around the axis of the grouting openings are uniformly distributed on the side wall of the upper half section of the grouting anchor rod, the rupture membranes coaxially distributed with the grouting openings are respectively arranged in the grouting openings and the front end face of the grouting anchor rod, the sliding block coaxially distributed with the grouting anchor rod is arranged in the grouting anchor rod, the sliding block is in sliding connection with the inner side face of the grouting anchor rod, the distance between the sliding block and the rupture membranes at the front end face of the grouting anchor rod is 0 to 20% of the length of the grouting anchor rod, and establish the anchoring agent in the slip casting stock between the burst disk of terminal surface department before slider and the slip casting stock, and do not establish the slip casting mouth on the lateral wall of slip casting stock between the burst disk of terminal surface department before slider and the slip casting stock, a plurality of reinforcing plates, every reinforcing plate all cladding is in the slip casting stock lateral surface that a slip casting mouth corresponds, reinforcing plate is the circular-arc platy structure with slip casting stock coaxial distribution, and the reinforcing plate projection is isosceles trapezoid, isosceles triangle in the horizontal plane, and reinforcing plate rear end face width is at least 3 times of terminal surface width before simultaneously, and reinforcing plate rear end face passes through elastic hinge and slip casting stock lateral surface articulates, reinforcing plate axis is 0 ~ 90 contained angles with slip casting stock axis.
Furthermore, the upper end face of the reinforcing plate is provided with at least one wedge, and the axes of the wedges are vertically distributed with the upper end face of the reinforcing plate.
Further, slip casting shutoff pipe include three-way valve, slip casting pipe, slip casting bag, slip casting stock, overflow mouth, rupture membrane, control valve, fender ring, connecting tube head, wherein slip casting stock rear end face is through connecting tube head and slip casting shutoff workshop intercommunication, the connecting screw thread is established to slip casting stock lateral surface to be connected with a plurality of fender rings through connecting screw thread, each fender ring cladding is outside the slip casting stock and along slip casting stock axis direction equipartition, and the interval between two adjacent fender rings is 1.1-1.5 times of slip casting bag length, establishes at least one overflow mouth on the slip casting stock lateral wall that corresponds between two adjacent fender rings simultaneously, and all establishes a rupture membrane in overflow mouth and the slip casting stock front end to block through the rupture membrane, slip casting bag is two altogether, and two slip casting bags cladding are outside the slip casting stock and with slip casting stock coaxial distribution respectively, and two slip casting bags distribute respectively in front of the fender ring and the rear of the last fender ring simultaneously, two slip casting bags are respectively through control valve and slip casting pipe, slip casting pipe and slip casting stock axis intercommunication one end face and three-way pipe are parallel to the slip casting pipe, slip casting pipe is connected in slip casting pipe one end face and the slip casting pipe is connected with the slip casting pipe, the slip casting pipe is connected with the slip casting end.
Further, the baffle ring is of a horn mouth structure, the rear end face of the baffle ring is connected with the grouting anchor rod, the diameter of the rear end face is 30% -80% of that of the front end face, at least three deformation grooves uniformly distributed around the axis of the baffle ring are formed in the front half portion of the baffle ring, the length of each deformation groove is 30% -80% of that of the side wall of the baffle ring, and the width of each deformation groove is 3-10 mm.
Further, the slip casting shutoff car include and bear the carrier, bear fossil fragments, slip casting liquid storage tank, main booster pump, supplementary booster pump, pressure sensor, flow sensor, multiport valve, reposition of redundant personnel row and drive circuit, bear the carrier and be the vehicle of arbitrary one drive in electric power, fuel and the hoist engine, bear the carrier and bear fossil fragments and be connected, at least one of slip casting liquid storage tank, each slip casting liquid storage tank inlay in bearing the fossil fragments to divide through the honeycomb duct respectively with main booster pump, supplementary booster pump intercommunication, wherein main booster pump and supplementary booster pump all communicate with two at least reposition of redundant personnel rows through the multiport valve respectively, wherein main booster pump communicates with each slip casting carrier pipe through the reposition of redundant personnel row, and supplementary booster pump communicates with each slip casting shutoff pipe through the reposition of redundant personnel row, and each honeycomb duct junction all establishes a pressure sensor and a flow sensor simultaneously, drive circuit is connected with bearing the carrier to respectively with bear carrier, main booster pump, supplementary booster pump, pressure sensor, flow sensor, multiport valve, multiple valve electrical connection.
A repairing and reinforcing method of a roadway top-falling grouting repairing system comprises the following steps:
S1, carrying preliminarily, namely firstly setting a bearing screen plate according to a tunnel roof structure and the area, enabling the area of the bearing screen plate to be at least 1.5 times that of the tunnel roof structure, enabling the bearing screen plate to be covered outside the tunnel roof structure under the support of bearing upright posts, simultaneously transferring a grouting plugging vehicle to a working position, and simultaneously transferring a grouting bearing pipe and a grouting plugging pipe when the grouting plugging vehicle is transferred; the grouting bearing pipe is initially connected with the bearing upright post, the grouting bearing pipe is connected with the anchor ear of the bearing upright post in a sliding way, the upper half part of the grouting bearing pipe is inserted into the outer side rock wall of the roof-falling area at the top of the roadway through the bearing screen plate, the bearing screen plate is positioned by the grouting bearing pipe, after the grouting bearing pipe finishes positioning the bearing screen plate, the bearing screen plate is connected with the bearing upright post, and the bearing upright post is separated from the bearing screen plate, so that the roof-falling area at the top of the roadway is bearing-protected through the bearing screen plate;
S2, strengthening bearing in a roof-falling area; after the step S1 is completed, the upper half part of each grouting plugging pipe penetrates through the bearing screen plate and is inserted into a rock layer of a roof area at the top of a roadway, and the bearing screen plate is reinforced and positioned on one side of the grouting plugging pipe; on the other hand, preliminary strengthening and fixing are carried out on the rock stratum in the roof-falling area;
S3, plugging and positioning, namely driving a grouting plugging vehicle to operate after the step S2 is completed, pressurizing grouting liquid buffered in a grouting liquid storage tank of the grouting plugging vehicle by a main booster pump, pouring the grouting liquid into each grouting bearing pipe for grouting operation, discharging an anchoring agent in the grouting bearing pipe from the front end surface of the grouting bearing pipe by using high-pressure grouting liquid, and connecting the front end surface of the grouting bearing pipe with a rock wall at the top of a roadway by using the anchoring agent; on the other hand, the high-pressure grouting amount overflows and seeps into the cracks of the rock wall and the gaps between the rock wall and the grouting anchor rods of the grouting bearing pipe through the grouting openings of the grouting bearing pipe, and after the anchoring agent and grouting agent are solidified, the grouting bearing pipe can be used for plugging and bonding the rock stratum, so that the strength of the connecting structure between the grouting bearing pipe and the rock wall is improved; secondly, pressurizing grouting liquid buffered in a grouting liquid storage tank of the grouting plugging vehicle by an auxiliary booster pump, and then pouring the grouting liquid into each grouting plugging pipe for grouting operation, wherein on one hand, a grouting bag arranged by the grouting plugging pipe is driven by grouting liquid pressure to expand in volume so as to plug a roof-falling area of a roadway and improve the positioning stability between the grouting plugging pipe and a rock wall; on the other hand, the grouting material penetrates into the cracks of the rock wall in the roof-falling area of the roadway through the overflow port arranged on the grouting plugging pipe, so that the connection strengthening of the rock wall is realized, and the effect of plugging and strengthening the roof-falling area of the roadway is achieved; and finally, removing and recycling each bearing upright post to finish the repairing operation of the roof fall of the roadway.
The system has the advantages of simple structure, strong environment adaptability, good universality and construction flexibility, and can realize rapid reinforcement on roof fall of the roadway compared with the traditional grouting plugging equipment and process, timely perform damage stopping and repairing operation, prevent the risk of aggravation of roof fall hazard and occurrence of secondary disasters, improve the stability and safety of construction of the top building of the roadway, and effectively improve the mechanization and automation degree of construction operation during construction, thereby effectively reducing the labor intensity and cost of construction operation.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of a system architecture of the present invention;
FIG. 2 is a schematic view of a load-bearing column structure;
FIG. 3 is a schematic view of a partial construction of a grouting carrier pipe;
FIG. 4 is a schematic diagram of a partial structure of a grouting plugging tube;
FIG. 5 is a schematic view of a partial structure of a guide tube in section;
FIG. 6 is a schematic top view of a partial structure of a grouting plugging vehicle;
FIG. 7 is a flow chart of a method of using the present invention.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-6, a top-rising grouting repair system for a roadway comprises a bearing upright post 1, a bearing screen 2, grouting bearing pipes 3, grouting plugging pipes 4, guide pipes 5 and grouting plugging vehicles 6, wherein the bearing screen 2 is of a grid plate structure with a rectangular cross section, the bearing screen 2 is coated on the outer side of the top of the roadway and is distributed in parallel with the top of the roadway, the bearing screen 2 is connected with the top of the roadway through a plurality of grouting bearing pipes 3, each grouting bearing pipe 3 is uniformly distributed at the edge of the bearing screen 2 around the center of the bearing screen 2, at least 80% of the effective length of each grouting bearing pipe 3 is embedded in the rock wall of the top of the roadway, the axes of each grouting bearing pipe 3 are respectively communicated with the grouting plugging vehicles 6 through the guide pipes, the guide pipes 5 are uniformly distributed around the axes of the bearing screen 2, the guide pipes 5 are respectively embedded in the bearing screen 2, the lower half parts are positioned below the bearing screen 2, at least one guide pipe 5 is uniformly distributed at the edge of the bearing screen 2 around the bearing screen 2, at least one guide pipe is respectively connected with the grouting plugging vehicle 4 at an included angle of 30-90 degrees with the surface of the top of the bearing screen 2, and at least one guide pipe 4 is respectively connected with the top of the grouting plugging vehicle 6 through the guide pipes at least 60 degrees, and the corresponding grouting plugging pipe 3 is respectively connected with the corresponding guide pipe 1 at least one side of the top of the roadway through the guide pipe is at least 60 degrees, the guide pipe 4 is respectively connected with the grouting plugging vehicle 6 through the guide pipe 4.
In this embodiment, the bearing column 1 includes a bearing base 11, a turnover mechanism 12, a hydraulic prop 13, a bearing column 14, and a hoop 15, where the bearing base 11 is connected with the bottom of the roadway and distributed in parallel, the upper end surface of the bearing base 11 is provided with the turnover mechanism 12 and hinged to the lower half of the hydraulic prop 13 through the turnover mechanism 12, and the axis of the hydraulic prop 13 is 0 ° to 90 ° with the upper end surface of the bearing base 11, the upper end surface of the hydraulic prop 13 is connected with a bearing column 14 and distributed coaxially, the outer side surface of the bearing column 14 is provided with a guide chute 16 and connected with at least two hoops 15 in a sliding manner through the guide chute 16, the axis of the hoop 15 is distributed parallel to the axis of the bearing column 14, and each hoop 15 is uniformly distributed along the axis direction of the bearing column 14, the bearing column 14 is connected with the grouting bearing tube 3 through the hoop 15, and the hoop 15 is coated outside the grouting bearing tube 3 and distributed coaxially with the grouting bearing tube 3.
It should be noted that the grouting bearing pipe 3 comprises a connecting pipe head 31, a grouting anchor rod 32, a reinforcing plate 33, a blasting film 34, an anchoring agent 35 and a sliding block 36, wherein the upper end surface and the lower end surface of the grouting anchor rod 32 are connected with the connecting pipe head 31 and are communicated with a flow guide pipe through the connecting pipe head 31, the outer side surface of the grouting anchor rod 32 is connected with the anchor ear 15 of the bearing upright post 1, a plurality of grouting openings 37 uniformly distributed around the axis of the grouting anchor rod 32 are uniformly distributed on the side wall of the upper half section of the grouting anchor rod 32, a blasting film 34 coaxially distributed with the grouting openings 37 is arranged in the grouting openings 37 and the front end surface of the grouting anchor rod 32, a sliding block 36 coaxially distributed with the grouting anchor rod 32 is arranged in the grouting anchor rod 32, the sliding block 36 is in sliding connection with the inner side surface of the grouting anchor rod 32, the distance between the sliding block 36 and the blasting film 34 at the front end surface of the grouting anchor rod 32 is 0 to 20% of the length of the grouting anchor rod 32, and establish anchor 35 in the slip casting stock 32 between the burst disk 34 of slider 36 and slip casting stock 32 front end face department, and not establish slip casting mouth 37 on the lateral wall of slip casting stock 32 between slider 36 and the burst disk 34 of slip casting stock 32 front end face department, reinforcing plate 33 a plurality of, every reinforcing plate 33 cladding is at the slip casting stock 32 lateral surface that a slip casting mouth 37 corresponds, reinforcing plate 33 is the circular-arc platy structure with slip casting stock 32 coaxial distribution, and reinforcing plate 33 projects as any one of isosceles trapezoid, isosceles triangle on the horizontal plane, and reinforcing plate 33 rear end face width is at least 3 times of front end face width simultaneously, and reinforcing plate 33 rear end face passes through elastic hinge and slip casting stock 32 lateral surface hinge, reinforcing plate 33 axis is 0~ 90 contained angle with slip casting stock 32 axis.
Further preferably, at least one wedge 38 is disposed on the upper end surface of the reinforcing plate 33, and the axis of the wedge 38 is vertically distributed between the upper end surface of the reinforcing plate 33.
The arranged rupture membrane can enable grouting material pressure in the grouting anchor rod to reach a set value and then be cracked when grouting blocking is carried out, so that on one hand, the grouting material pressure is utilized to drive the anchoring agent to be discharged out of the grouting anchor rod, and the anchoring agent is used for bonding and positioning the grouting anchor rod and the rock wall; on the other hand, the grouting material is enabled to quickly infiltrate into the gap of the rock wall under the drive of high pressure, so that the bonding reinforcement of the rock stratum structure is realized;
The reinforcing plate and the wedges arranged on the reinforcing plate are simultaneously arranged, when the high-pressure grouting material breaks through the blasting film jet flow to the rock stratum, the reinforcing plate is turned under the driving of the grouting material, and in the turning process, the wedges arranged on the reinforcing plate and the reinforcing plate are penetrated into the rock stratum, so that the positioning stability and the bearing capacity of the grouting bearing pipe are further improved.
Simultaneously, the grouting plugging tube 4 comprises a three-way valve 46, a grouting tube 41, a grouting bag 42, a grouting anchor rod 32, an overflow port 43, a rupture membrane 34, a control valve 44, a baffle ring 45 and a connecting pipe head 31, wherein the rear end surface of the grouting anchor rod 31 is communicated with the grouting plugging vehicle 6 through the connecting pipe head 31, the outer side surface of the grouting anchor rod 32 is provided with connecting threads and is connected with a plurality of baffle rings 45 through the connecting threads, each baffle ring 45 is coated outside the grouting anchor rod 32 and uniformly distributed along the axis direction of the grouting anchor rod 32, the interval between two adjacent baffle rings 45 is 1.1-1.5 times of the length of the grouting bag 42, at least one overflow port 43 is arranged on the side wall of the grouting anchor rod 32 corresponding to the two adjacent baffle rings 45, and the rupture membrane 34 is arranged in the front ends of the overflow port 43 and the grouting anchor rod 32, and the grouting bags 42 are plugged through the rupture membranes 34, the two grouting bags 42 are respectively coated outside the grouting anchor rods 32 and are coaxially distributed with the grouting anchor rods 32, meanwhile, the two grouting bags 42 are respectively distributed in front of the foremost baffle ring 45 and behind the rearmost baffle ring 45, meanwhile, the two grouting bags 42 are respectively communicated with the grouting pipe 41 through the control valve 44, the grouting pipe 41 is embedded in the grouting anchor rods 32 and is parallel to the axis of the grouting anchor rods 32, the three-way valve 46 is positioned outside the rear end surfaces of the grouting anchor rods 32, one section of the three-way valve 46 is communicated with the grouting plugging vehicle 6 through a flow guide pipe, one end of the three-way valve 46 is communicated with the grouting anchor rods 32, and the remaining end of the three-way valve is communicated with the grouting pipe 41 through the connecting pipe head 31.
The arranged rupture disk can enable the grouting material pressure in the grouting anchor rod to reach a set value and then be fractured when grouting blocking is carried out, so that the grouting material can quickly infiltrate into a gap of a rock wall under high-pressure driving, and the bonding reinforcement of a rock stratum structure is realized;
Meanwhile, the baffle ring 45 is of a horn-shaped structure, the rear end face of the baffle ring 45 is connected with the grouting anchor rod 32, the diameter of the rear end face is 30% -80% of that of the front end face, at least three deformation grooves 47 uniformly distributed around the axis of the baffle ring 45 are formed in the front half part of the baffle ring 45, the length of each deformation groove 47 is 30% -80% of that of the side wall of the baffle ring 45, and the width of each deformation groove is 3-10 mm.
The baffle ring is driven by the grouting amount pressure through the deformation groove, or is elastically deformed through the deformation groove when deformed with the rock stratum, so that the positioning stability of the grouting plugging pipe is improved.
In this embodiment, the grouting plugging 6 vehicle includes a carrier 61, a carrier keel 62, grouting storage tanks 63, a main booster pump 64, an auxiliary booster pump 65, a pressure sensor 66, a flow sensor 67, a multi-way valve 68, a shunt row 69 and a driving circuit 60, the carrier 61 is a vehicle driven by any one of electric power, fuel oil and a winch, the carrier 61 is connected with the carrier keel 62, at least one of the grouting storage tanks 63, each grouting storage tank 63 is embedded in the carrier keel 62 and is respectively communicated with the main booster pump 64 and the auxiliary booster pump 65 through a diversion pipe, wherein the main booster pump 64 and the auxiliary booster pump 65 are respectively communicated with at least two shunt rows 69 through the multi-way valve 68, the main booster pump 64 is respectively communicated with each grouting carrier pipe 3 through the shunt row 69, the auxiliary booster pump 65 is communicated with each grouting 4 pipe through the shunt row 69, meanwhile, the shunt row 69 is respectively provided with a pressure sensor 66 and a flow sensor 67 at the connection position of each diversion pipe, and the driving circuit 60 is connected with the carrier 61, and is respectively connected with the main booster pump 64, the auxiliary booster pump 65, the multi-way valve 68 and the multi-way valve 65, and the pressure sensor 65 are respectively connected with the main booster pump 64 and the auxiliary booster pump 64.
The driving circuit 60 is a circuit system based on a programmable controller, and a serial communication circuit is additionally arranged in the driving circuit.
In addition, the guide tube 5 is a hollow tubular structure of any one of a cylinder and a drum structure, at least one sealing ring 51 which is coaxially distributed with the guide tube 5 is additionally arranged in the guide tube 5, and the sealing ring 51 is coated outside the grouting plugging tube 4 and distributed along the axial direction of the grouting plugging tube 4.
As shown in FIG. 7, the repairing and reinforcing method of the roadway top-pouring grouting repairing system comprises the following steps:
S1, carrying preliminarily, namely firstly setting a bearing screen plate according to a tunnel roof structure and the area, enabling the area of the bearing screen plate to be at least 1.5 times that of the tunnel roof structure, enabling the bearing screen plate to be covered outside the tunnel roof structure under the support of bearing upright posts, simultaneously transferring a grouting plugging vehicle to a working position, and simultaneously transferring a grouting bearing pipe and a grouting plugging pipe when the grouting plugging vehicle is transferred; the grouting bearing pipe is initially connected with the bearing upright post, the grouting bearing pipe is connected with the anchor ear of the bearing upright post in a sliding way, the upper half part of the grouting bearing pipe is inserted into the outer side rock wall of the roof-falling area at the top of the roadway through the bearing screen plate, the bearing screen plate is positioned by the grouting bearing pipe, after the grouting bearing pipe finishes positioning the bearing screen plate, the bearing screen plate is connected with the bearing upright post, and the bearing upright post is separated from the bearing screen plate, so that the roof-falling area at the top of the roadway is bearing-protected through the bearing screen plate;
S2, strengthening bearing in a roof-falling area; after the step S1 is completed, the upper half part of each grouting plugging pipe penetrates through the bearing screen plate and is inserted into a rock layer of a roof area at the top of a roadway, and the bearing screen plate is reinforced and positioned on one side of the grouting plugging pipe; on the other hand, preliminary strengthening and fixing are carried out on the rock stratum in the roof-falling area;
S3, plugging and positioning, namely driving a grouting plugging vehicle to operate after the step S2 is completed, pressurizing grouting liquid buffered in a grouting liquid storage tank of the grouting plugging vehicle by a main booster pump, pouring the grouting liquid into each grouting bearing pipe for grouting operation, discharging an anchoring agent in the grouting bearing pipe from the front end surface of the grouting bearing pipe by using high-pressure grouting liquid, and connecting the front end surface of the grouting bearing pipe with a rock wall at the top of a roadway by using the anchoring agent; on the other hand, the high-pressure grouting amount overflows and seeps into the cracks of the rock wall and the gaps between the rock wall and the grouting anchor rods of the grouting bearing pipe through the grouting openings of the grouting bearing pipe, and after the anchoring agent and grouting agent are solidified, the grouting bearing pipe can be used for plugging and bonding the rock stratum, so that the strength of the connecting structure between the grouting bearing pipe and the rock wall is improved; secondly, pressurizing grouting liquid buffered in a grouting liquid storage tank of the grouting plugging vehicle by an auxiliary booster pump, and then pouring the grouting liquid into each grouting plugging pipe for grouting operation, wherein on one hand, a grouting bag arranged by the grouting plugging pipe is driven by grouting liquid pressure to expand in volume so as to plug a roof-falling area of a roadway and improve the positioning stability between the grouting plugging pipe and a rock wall; on the other hand, the grouting material penetrates into the cracks of the rock wall in the roof-falling area of the roadway through the overflow port arranged on the grouting plugging pipe, so that the connection strengthening of the rock wall is realized, and the effect of plugging and strengthening the roof-falling area of the roadway is achieved; and finally, removing and recycling each bearing upright post to finish the repairing operation of the roof fall of the roadway.
The system has the advantages of simple structure, strong environment adaptability, good universality and construction flexibility, and can realize rapid reinforcement on roof fall of the roadway compared with the traditional grouting plugging equipment and process, timely perform damage stopping and repairing operation, prevent the risk of aggravation of roof fall hazard and occurrence of secondary disasters, improve the stability and safety of construction of the top building of the roadway, and effectively improve the mechanization and automation degree of construction operation during construction, thereby effectively reducing the labor intensity and cost of construction operation.
It will be appreciated by those skilled in the art that the invention is not limited to the embodiments described above. The foregoing embodiments and description have been presented only to illustrate the principles of the invention. The present invention is capable of various changes and modifications without departing from its spirit and scope. Such variations and modifications are intended to fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A tunnel top-off grouting repair system is characterized in that: the tunnel top-burst grouting repair system comprises bearing columns, bearing net plates, grouting bearing pipes, grouting plugging pipes, guide pipes and grouting plugging carts, wherein the bearing net plates are grid plate structures with rectangular cross sections, the bearing net plates are coated on the outer sides of the tops of the tunnels and are distributed parallel to the tops of the tunnels, meanwhile, the bearing net plates are connected with the tops of the tunnels through a plurality of grouting bearing pipes, the grouting bearing pipes are uniformly distributed around the centers of the bearing net plates at the edges of the bearing net plates, at least 80% of the effective length of the upper half of each grouting bearing pipe is embedded in the rock wall of the tops of the tunnels, the axes of each grouting bearing pipe are respectively communicated with the grouting plugging carts through guide pipes, a plurality of guide pipes are uniformly distributed around the axes of the bearing net plates, the guide pipes are respectively embedded in the bearing net plates, the upper half of the guide pipes are embedded in the rock wall of the tops of the tunnels through bearing, the lower half of the guide pipes are located below the lower end faces of the bearing net plates, simultaneously, one grouting plugging pipe is coaxially distributed in each guide pipe is uniformly distributed around the centers of the bearing net plates, at least 80% of the effective length of each grouting bearing pipe is embedded in the rock wall of the tops of the tunnels, the corresponding to the corresponding sealing cartriage is at least 80 DEG, the effective length of each grouting pipe is connected with the axes of the corresponding sealing cartriage at the corresponding to the top of the corresponding sealing cartge, and the sealing cartge is at an included angle between the effective length of the sealing pipe and the sealing cartge is at an included between the sealing pipe and the sealing bottom of the sealing up bottom is at least 60 DEG, and the sealing down respectively.
2. The roadway roof grouting repair system of claim 1, wherein: the bearing column comprises a bearing base, a turnover mechanism, hydraulic support columns, bearing columns and hoops, wherein the bearing base is connected with the bottom of a roadway and is distributed in parallel, the upper end face of the bearing base is provided with the turnover mechanism and is hinged to the lower half part of the hydraulic support columns, the axis of the hydraulic support columns is an included angle of 0-90 degrees with the upper end face of the bearing base, the upper end faces of the hydraulic support columns are connected with one bearing column and are distributed coaxially, the outer side faces of the bearing columns are provided with guide sliding grooves, the guide sliding grooves are connected with at least two hoops in a sliding mode, the axes of the hoops are distributed in parallel, the hoops are uniformly distributed along the axis direction of the bearing columns, the bearing columns are connected with grouting bearing pipes through the hoops, and the hoops are coated outside the grouting bearing pipes and are distributed coaxially between the grouting bearing pipes.
3. A roadway roof grouting repair system as claimed in claim 1 or claim 2, wherein: the grouting bearing pipe comprises a connecting pipe head, a grouting anchor rod, a reinforcing plate, rupture membranes, anchoring agents and sliding blocks, wherein the upper end face and the lower end face of the grouting anchor rod are connected with the connecting pipe head and are communicated with a guide pipe through the connecting pipe head, the outer side face of the grouting anchor rod is connected with a hoop of a bearing upright post, a plurality of grouting openings uniformly distributed around the axis of the grouting anchor rod are uniformly distributed on the side wall of the upper half section of the grouting anchor rod, the rupture membranes coaxially distributed with the grouting openings are uniformly distributed in the grouting openings and the front end face of the grouting anchor rod, the sliding blocks coaxially distributed with the grouting anchor rod are arranged in the grouting anchor rod, the sliding blocks are in sliding connection with the inner side face of the grouting anchor rod, the distance between the sliding blocks and the rupture membranes at the front end face of the grouting anchor rod is 0 to 20% of the length of the grouting anchor rod, and establish the anchoring agent in the slip casting stock between the burst disk of terminal surface department before slider and the slip casting stock, and do not establish the slip casting mouth on the lateral wall of slip casting stock between the burst disk of terminal surface department before slider and the slip casting stock, a plurality of reinforcing plates, every reinforcing plate all cladding is in the slip casting stock lateral surface that a slip casting mouth corresponds, reinforcing plate is the circular-arc platy structure with slip casting stock coaxial distribution, and the reinforcing plate projection is isosceles trapezoid, isosceles triangle in the horizontal plane, and reinforcing plate rear end face width is at least 3 times of terminal surface width before simultaneously, and reinforcing plate rear end face passes through elastic hinge and slip casting stock lateral surface articulates, reinforcing plate axis is 0 ~ 90 contained angles with slip casting stock axis.
4. A roadway roof grouting repair system as claimed in claim 3, wherein: at least one wedge is arranged on the upper end face of the reinforcing plate, and the axes of the wedges are vertically distributed with the upper end face of the reinforcing plate.
5. The roadway roof grouting repair system of claim 1, wherein: the grouting plugging pipe comprises a three-way valve, a grouting pipe, grouting bags, grouting bolts, overflow ports, rupture membranes, control valves, baffle rings and connecting pipe heads, wherein the rear end face of each grouting bolt is communicated with a grouting plugging workshop through the connecting pipe heads, connecting threads are arranged on the outer side face of each grouting bolt and connected with the plurality of baffle rings through the connecting threads, each baffle ring is coated outside each grouting bolt and uniformly distributed along the axis direction of each grouting bolt, the distance between every two adjacent baffle rings is 1.1-1.5 times of the length of each grouting bag, at least one overflow port is formed in the side wall of each grouting bolt corresponding to each adjacent baffle ring, the rupture membranes are arranged in the front ends of the overflow ports and the grouting bolts, the rupture membranes are plugged through the rupture membranes, the grouting bags are coated outside the grouting bolts and are coaxially distributed with the grouting bolts, simultaneously, the grouting bags are respectively distributed in front of the baffle rings and the rear of the baffle rings at the rearmost end, simultaneously are respectively communicated with the grouting pipe through the control valves and the grouting pipe, the grouting bags are respectively arranged on the side walls of the grouting bolts, and are communicated with one end face of the grouting pipe, and the grouting pipe is communicated with the grouting pipe through the grouting pipe.
6. The roadway roof grouting repair system of claim 4, wherein: the retaining ring is of a horn mouth-shaped structure, the rear end face of the retaining ring is connected with the grouting anchor rod, the diameter of the rear end face is 30% -80% of that of the front end face, at least three deformation grooves uniformly distributed around the axis of the front half part of the retaining ring are formed, the length of each deformation groove is 30% -80% of that of the side wall of the retaining ring, and the width of each deformation groove is 3-10 mm.
7. The roadway roof grouting repair system of claim 1, wherein: the grouting plugging vehicle comprises a bearing carrier, a bearing keel, grouting liquid storage tanks, a main booster pump, auxiliary booster pumps, pressure sensors, flow sensors, multi-way valves, split-flow rows and a driving circuit, wherein the bearing carrier is any one of electric power, fuel oil and a winch, the bearing carrier is connected with the bearing keel, at least one of the grouting liquid storage tanks is embedded in the bearing keel and is respectively communicated with the main booster pump and the auxiliary booster pumps through diversion pipes, the main booster pump and the auxiliary booster pumps are respectively communicated with at least two split-flow rows through the multi-way valves, the main booster pumps are respectively communicated with each grouting bearing pipe through the split-flow rows, the auxiliary booster pumps are simultaneously communicated with each grouting plugging pipe through the split-flow rows, and the pressure sensors and the flow sensors are respectively arranged at the connection positions of the split-flow rows and each diversion pipes, and the driving circuit is connected with the bearing carrier and is respectively electrically connected with the main booster pump, the auxiliary booster pumps, the pressure sensors, the flow sensors and the multi-flow valves.
8. The repair reinforcing method of a roadway top grouting repair system according to claim 7, wherein the repair reinforcing method comprises the following steps: the repairing and reinforcing method of the roadway top-pouring grouting repairing system comprises the following steps of:
S1, carrying preliminarily, namely firstly setting a bearing screen plate according to a tunnel roof structure and the area, enabling the area of the bearing screen plate to be at least 1.5 times that of the tunnel roof structure, enabling the bearing screen plate to be covered outside the tunnel roof structure under the support of bearing upright posts, simultaneously transferring a grouting plugging vehicle to a working position, and simultaneously transferring a grouting bearing pipe and a grouting plugging pipe when the grouting plugging vehicle is transferred; the grouting bearing pipe is initially connected with the bearing upright post, the grouting bearing pipe is connected with the anchor ear of the bearing upright post in a sliding way, the upper half part of the grouting bearing pipe is inserted into the outer side rock wall of the roof-falling area at the top of the roadway through the bearing screen plate, the bearing screen plate is positioned by the grouting bearing pipe, after the grouting bearing pipe finishes positioning the bearing screen plate, the bearing screen plate is connected with the bearing upright post, and the bearing upright post is separated from the bearing screen plate, so that the roof-falling area at the top of the roadway is bearing-protected through the bearing screen plate;
S2, strengthening bearing in a roof-falling area; after the step S1 is completed, the upper half part of each grouting plugging pipe penetrates through the bearing screen plate and is inserted into a rock layer of a roof area at the top of a roadway, and the bearing screen plate is reinforced and positioned on one side of the grouting plugging pipe; on the other hand, preliminary strengthening and fixing are carried out on the rock stratum in the roof-falling area;
S3, plugging and positioning, namely driving a grouting plugging vehicle to operate after the step S2 is completed, pressurizing grouting liquid buffered in a grouting liquid storage tank of the grouting plugging vehicle by a main booster pump, pouring the grouting liquid into each grouting bearing pipe for grouting operation, discharging an anchoring agent in the grouting bearing pipe from the front end surface of the grouting bearing pipe by using high-pressure grouting liquid, and connecting the front end surface of the grouting bearing pipe with a rock wall at the top of a roadway by using the anchoring agent; on the other hand, the high-pressure grouting amount overflows and seeps into the cracks of the rock wall and the gaps between the rock wall and the grouting anchor rods of the grouting bearing pipe through the grouting openings of the grouting bearing pipe, and after the anchoring agent and grouting agent are solidified, the grouting bearing pipe can be used for plugging and bonding the rock stratum, so that the strength of the connecting structure between the grouting bearing pipe and the rock wall is improved; secondly, pressurizing grouting liquid buffered in a grouting liquid storage tank of the grouting plugging vehicle by an auxiliary booster pump, and then pouring the grouting liquid into each grouting plugging pipe for grouting operation, wherein on one hand, a grouting bag arranged by the grouting plugging pipe is driven by grouting liquid pressure to expand in volume so as to plug a roof-falling area of a roadway and improve the positioning stability between the grouting plugging pipe and a rock wall; on the other hand, the grouting material penetrates into the cracks of the rock wall in the roof-falling area of the roadway through the overflow port arranged on the grouting plugging pipe, so that the connection strengthening of the rock wall is realized, and the effect of plugging and strengthening the roof-falling area of the roadway is achieved; and finally, removing and recycling each bearing upright post to finish the repairing operation of the roof fall of the roadway.
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