CN102797266B - Well sealing waterproof construction method for dewatering well - Google Patents
Well sealing waterproof construction method for dewatering well Download PDFInfo
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- CN102797266B CN102797266B CN201210319837.3A CN201210319837A CN102797266B CN 102797266 B CN102797266 B CN 102797266B CN 201210319837 A CN201210319837 A CN 201210319837A CN 102797266 B CN102797266 B CN 102797266B
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Abstract
The invention discloses a well sealing waterproof construction method for a dewatering well. The method comprises the following steps of: (1) constructing a foundation bed on the surrounding of the dewatering well; (2) embedding a steel sleeve for sealing the dewatering well in a foundation pit; (3) laying a waterproof roll material on the foundation bed, and then pouring a fine aggregate concrete protective layer on the waterproof roll material; (4) clamping a waterproof plate on the outer wall of the waterproof roll material on the outer wall of the steel sleeve in an abutted way; (5) clamping the waterproof plate by using a copper strip; (6) injecting a sealing adhesive to the waterproof plate; (7) pouring bottom plate concrete to the fine aggregate concrete protective layer; (8) pumping water; (9) embedding a sealing plate in the steel sleeve; (10) after filling gravels into a filling pipe, injecting a cement paste into a cement paste injection pipe, and stopping the injection of the cement paste until the paste in an overflow pipe flows out; and (11) pouring concrete into the steel sleeve above the sealing plate. Through the adoption of the well sealing waterproof construction method disclosed by the invention, a waterproof treatment problem at the connection of the dewatering well in the foundation pit and the foundation bottom plate in the whole dewatering well sealing waterproof system is solved.
Description
Technical field
The present invention relates to a kind of construction method of dewatering well, particularly relate to the construction method of a kind of dewatering well shut-in well waterproof.
Background technology
Along with the development of urban construction, the building basement degree of depth constantly increases, and foundation ditch is just more and more darker, and also more and more higher to the requirement of foundation pit dewatering, water level falls less than requiring, foundation ditch easily occurs danger.Deep foundation pit construction often needs to excavate in the aquifer below groundwater table.Therefore need before excavation groundwater table is reduced to side slope face and, to prevent subsiding and shoving of side slope, and excavates under ensureing to be in drainage and hard condition of work in work progress at the end, hole.Be arranged on the dewatering well in foundation ditch, not only need precipitation before soil excavation, and needing of having lasts till that basement construction is complete, the even longer time had, this just requires that this part dewatering well can not be closed when sole plate is constructed, thus carry out the work such as the waterproofing work of this part dewatering well and sole plate junction, carry out the plugging dewatering well in later stage and waterproof is closed just becomes a great problem simultaneously.
The patent of having authorized is learnt by retrieval:
1 application number is that the Chinese patent of CN201120242057.4 discloses " plugging system of dewatering well ", comprise joint steel pipe and seal plate, joint steel pipe passes basement sole plate and is fixed on dewatering well well head, weld seal plate outside steel pipe, it is characterized in that: also comprise screw thread supporting and screw thread closure plate; Weld screw thread supporting inside described joint steel pipe, screw thread closure plate is flexibly connected with screw thread supporting and is integrated.The screw thread of described screw thread closure plate is provided with the hole through the rope made of hemp.The described rope made of hemp passes hole and is fastened in the screw thread of screw thread closure plate.Stuck point is fixed in the upper surface outer of described screw thread closure plate.The upper surface hold-doun nut of described screw thread closure plate.This patent just welds seal plate outside steel pipe, can not ensure the sealing problem be connected with base plate completely.
2 application numbers are that the Chinese patent of CN200820076584.0 discloses " well-covering device for dewatering well ", the technical field of dewatering device when the utility model belongs to construction work foundation construction, be specifically related to a kind of well-covering device for dewatering well, solve groundwater pressure or water yield larger time, the method for existing water level lowering well sealing may cause shutoff hidden danger of quality or cannot the problem of shutoff.Well-covering device for dewatering well, comprise the steel deck-plate of the sheathed steel sleeve in dewatering well well casing top and the setting of steel sleeve top, it is characterized in that the connected mode of steel sleeve and steel deck-plate is Flange joint, between the contact surface of junction, rubber pad is set, steel deck-plate wears aqueduct, aqueduct lower end is inserted in steel sleeve, aqueduct upper end mounted valve.The utility model has following beneficial effect: the method adopting the construction of valve shutoff dewatering well, and underground water is led from stifled becoming, solved burst problem during shutoff, make plugging dewatering well process not stay hidden danger of quality and construct easy to operate by water guide after first closing.
1st ~ 2 patents just weld seal plate outside steel pipe, can not ensure the sealing problem that dewatering well is connected with base plate completely.
3 application numbers are that the Chinese patent of CN201120146835.X discloses " a kind of enclosed construction of dewatering well ", and this structure is positioned at sole plate, waters hole after described sole plate is provided with; This structure comprises the steel plate for sealing water be fixed on steel pile casting outer peripheral face and the shutoff steel plate be fixed on steel pile casting delivery port, described shutoff steel plate is provided with outlet pipe, described outlet pipe is provided with stop valve, described stop valve be positioned at described after water hole, water in hole after described and built expansive concrete.The utility model can open stop valve as required, locks stop valve, build expansive concrete, effectively stopped the permeation pathway of underground water during shut-in well, and makes to be convenient to the opportunity of shut-in well control.And the utility model structure is simple, easy construction.Although this patent steel pile casting outer peripheral face is provided with a lot of Lock gate, close measure is not taked in steel pile casting inside, can not deal with problems from root.
4 application numbers are that the Chinese patent of CN201120261024.4 discloses " well shutting sleeve of dewatering well ", the utility model relates to a kind of well shutting sleeve of dewatering well, be made up of steel sleeve and snap ring cover plate, it is characterized in that: in steel sleeve, weld sealing inner ring, at steel sleeve external welding sealing outer shroud, steel sleeve is enclosed within downcast well pipe, with the sealing inner ring place of snap ring cover closure at steel sleeve, and is lined with expansion water-stop band between the sealing inner ring and snap ring cover plate of steel sleeve.Steel sleeve of the present utility model has the advantage of really guarantee the minimum plated construction and shut-in well quality easy for installation, swift to operate.Solve groundwater table high and shunt in a well in area that is underground water plentifulness uncompacted problem.This patent, only at steel sleeve external welding sealing outer shroud, can not solve the water-protected enclosure problem at basis and well shutting sleeve of dewatering well handing-over position.
5 application numbers are that the Chinese patent of CN200920318902.4 discloses " rapid low-cost water level lowering well sealing device ", it is positioned at the suitable for reading of dewatering well, a well head pipe is fixed with the suitable for reading of dewatering well, well head pipe peripheral solder has embedded board, embedded board is embedded in underplate concrete, is welded with end socket steel plate in well head pipe, end socket steel plate has at least one water burst hole, hole is welded with sleeve to water burst, and sleeve is threaded with plug.The utility model is by the welding of part and be threaded and realize closing of dewatering well, has blocked the permeation pathway of underground water completely, has not needed to backfill rubble and concrete in well.Sealing effect is good, easy construction, and speed of application is fast, within general 20 minutes, can complete capping operation; Can construction cost be reduced, save 50% R rates quoted above than conventional method every mouthful well.Be applicable to the drainage construction of ground.This patent, only at sleeve pipe external welding embedded board, can not solve the water-protected enclosure problem at basis and well shutting sleeve of dewatering well handing-over position, is not suitable for also needing to fall water problem when solving foundation construction.
6 application numbers are that the Chinese patent of CN200820025100.X discloses " precipitation Well seal structure in foundation slab ", the utility model provides a kind of precipitation Well seal structure in foundation slab of building engineering field, top without sandpipe in its structure is set to steel cylinder, bed course based on the outside of steel cylinder bottom, the top of foundation pad sets gradually as seal plate is fixed in bottom, rubber sheet gasket, waterproofing course, rubber sheet gasket, movable annular steel plate, the top of movable annular steel plate is provided with bolt, be fixed on the foundation pad of bottom successively by bolt, the fixing seal plate full weld in bottom is on steel cylinder, the upper weld of steel cylinder has circular sealing steel plate.This patent is at steel cylinder outside weldings seal plate, and bottom is fixed seal plate and is fixed on foundation pad, and does not have waterproof measure at the vertical position that steel cylinder outer wall and sole plate join.
7 application numbers are that to disclose " construction method of dewatering well in underground concrete structure " the method be dewatering well for arranging bottom underground structure in foundation ditch to the Chinese patent of CN201010257069.4, in dewatering well, downcomer is set, the lower port of downcomer is connected with water pump, the upper port of downcomer is drawn along in concrete floor to be cast to a side, upwards arranges to higher than groundwater table plane place along foundation ditch afterwards; Or the upper port of downcomer is along in concrete floor to be cast, and descend water level place above Ground with upwards arranging in the concrete wall to be cast that is connected of concrete floor one, restart water pump, carry out precipitation, implement concrete floor and side wall cast afterwards, treat concrete setting, after reaching prescribed strength, stop precipitation, last shutoff downcomer upper port.The present invention not only reduces the groundwater pressure of dewatering well sealing part, and makes the sealing process of gutter simpler and easy, thus avoids the structure drainage occurred because gutter sealing deals with improperly.This patent basis and dewatering well steel sleeve handing-over position do not have waterproof measure, are not suitable for also needing to fall water problem when solving foundation construction.
8 application numbers are that the Chinese patent of CN200710113460.5 discloses " waterproof of precipitation well in foundation pit and plugging construction method ", are specifically related to construction techniques when foundation ditch is wider, precipitation is darker.Also common foundation ditch is applicable in the waterproof of intermediate arrangement dewatering well and shutoff.Before soil excavation, at foundation ditch intermediate arrangement dewatering well, the PVC plastic pipe of the same dewatering well degree of depth is placed in dewatering well, steel sleeve is buried underground when concrete cushion is constructed, concrete floor built can stop precipitation time, employing graded sand and stone, dry cement carry out shutoff to dewatering well, and adopt pipe flange lid and rubber washer to carry out shutoff to steel sleeve, expansive concrete is built on steel sleeve upper strata.Although this patent waterproofing course turns over to the outer seal ring of steel sleeve, waterproofing course does not do topping, is easy to waterproofing course to destroy, thus causes the problem that plugging dewatering well waterproof is not closed when construction of bottom plates.
9 application numbers are that the Chinese patent of CN201110295253.2 discloses " a kind of construction method for adding water lowering well in water collecting well ", and it comprises the following steps: squeeze in the diapire of described collecting well the round steel pipe dewatering well structure prepared until meet the requirements of absolute altitude; Soil in round steel pipe is removed; Rubble is backfilled as drainage layer at the bottom of round steel pipe pipe; Observing water level situation to round steel pipe of being put by water pump is drawn water; The sidewall and diapire of collecting well are laid bed course, waterproofing course and fish tail and waterproof layer successively and carries out recovery construction; Outside fish tail and waterproof layer, the reinforcing bar of colligation collecting well sidewall and diapire, builds the concrete of collecting well diapire and sidewall; Round steel pipe top described in shutoff.Adopt the inventive method: construction method is easy, speed of application is fast, cost is low, intensity is high, effectively can solve the slight crack of water-stop curtain causes seepage, in time water is discharged to the base plate following provisions degree of depth when making the waterproofing course of the collecting well closed on destroyed, meets basement construction requirement and structure is simple.On this patent round steel pipe outer wall, compartment of terrain is welded with upper track seal ring and lower road seal ring, and the vertical position that round steel pipe outer wall and sole plate join does not have waterproof measure.So this patent is only suitable for the slight crack of water-stop curtain cause seepage, when the waterproofing course of the collecting well closed on is destroyed, use the dewatering well construction method described in this patent.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art, provide a kind of structure simple, firm, shut-in well system is tight, sealing effect good, and has a kind of dewatering well shut-in well waterproof construction method of triple waterproof effect function.
A kind of dewatering well shut-in well waterproof construction method of the present invention, it comprises the following steps:
(1) construction of dewatering well surrounding base bed course is carried out;
(2) bury the steel bushing of the dewatering well shut-in well put in foundation ditch, described steel bushing outer wall is provided with steel plate for sealing water;
(3) on described foundation pad laying water-proof coiled material and described waterproof roll always along steel bushing outer wall volume to steel plate for sealing water, then build pea gravel concreten topping being positioned on the waterproof roll on described foundation pad;
(4) two semi-circular splash guard docking are stuck on the waterproof roll outer wall be positioned on steel bushing outer wall;
(5) the whole splash guard of copper bar banding is adopted;
(6) fluid sealant is injected on the interface position of described two semi-circular splash guards docking and whole splash guard top and steel plate for sealing water diapire intersection;
(7) on described pea gravel concreten topping, carry out base plate steel bar binding, underplate concrete builds;
(8) undertaken drawing water in dewatering well by steel bushing according to on-site actual situations, exhaust recession pump;
(9) bury in described steel bushing and put hush panel, described hush panel is reserved with feeding port, overfall, cement injection mouth, water glass adhesive pour into mouth;
(10) pour in mouth at described reserved feeding port, overfall, cement injection mouth, water glass adhesive imbed loading pipe respectively, bleed off pipe, cement injection pipe, water glass adhesive pour into pipe;
(11) after inserting rubble in described loading pipe, in described cement injection pipe, inject cement paste, note in bleed off pipe when having slurries to flow out and stop injecting cement paste, pour in pipe at described water glass adhesive and pour into one deck water glass adhesive;
(12) loading pipe described in extraction, bleed off pipe, cement injection pipe, water glass adhesive pour into pipe;
(13) the steel bushing concreting described in being positioned at above hush panel.
The beneficial effect of the inventive method is: structure is simple, and shut-in well system is tight, sealing effect good, sound construction.After inserting rubble in loading pipe, inject cement paste, waterproof after cement paste sclerosis, and the space between rubble is filled up, strengthen the intensity of dewatering well well head bottom ground, ensure the fastness of structure.There is priming charge glass cement in hush panel bottom surface in addition, in hush panel top face steel bushing, have the concrete of a large label of building, constitute a tight shut-in well system with surrounding floor concrete.And there is the dewatering well shut-in well system of triple waterproof effect function, first steel bushing outer wall is provided with steel plate for sealing water, secondly on foundation pad laying water-proof coiled material and described waterproof roll always along steel bushing outer wall volume to steel plate for sealing water, latter two semi-circular splash guard docking is stuck on the waterproof roll outer wall that is positioned on steel bushing outer wall.Whole dewatering well shut-in well waterproofing system solves dewatering well in foundation ditch and the waterproofing work of sole plate junction and the plugging dewatering well in later stage and waterproof well and the construction problem such as to close.
Accompanying drawing explanation
Accompanying drawing is the constructing structure schematic diagram adopting a kind of dewatering well shut-in well of the present invention waterproof construction method.
Detailed description of the invention
Describe the present invention below in conjunction with the drawings and specific embodiments.
A kind of dewatering well shut-in well waterproof construction method of the present invention as shown in the figure, it comprises the following steps: (1) carries out the construction of dewatering well surrounding base bed course 6; (2) bury the steel bushing 1 of the dewatering well shut-in well put in foundation ditch, described steel bushing outer wall is provided with steel plate for sealing water 3; (3) on described foundation pad 6 laying water-proof coiled material 7 and described waterproof roll 7 always along steel bushing 1 outer wall volume to steel plate for sealing water 3, then build pea gravel concreten topping 8 being positioned on the waterproof roll 7 on described foundation pad 6; (4) two semi-circular splash guards 15 docking are stuck on the waterproof roll outer wall being positioned on steel bushing 1 outer wall as shown in 7-1 in figure; (5) the whole splash guard 15 of copper bar 9 banding is adopted; (6) fluid sealant 5 is injected in the interface position docked at described two semi-circular splash guards 15 and whole splash guard 15 top and steel plate for sealing water 3 diapire intersection; (7) on described pea gravel concreten topping 8, the reinforcing bar binding of base plate 14, the concreting of base plate is carried out; (8) undertaken drawing water in dewatering well by steel bushing 1 according to on-site actual situations, exhaust recession pump; (9) bury in described steel bushing 1 and put hush panel 2, described hush panel 2 is reserved with feeding port, overfall, cement injection mouth, water glass adhesive pour into mouth; (10) pour in mouth at described reserved feeding port, overfall, cement injection mouth, water glass adhesive imbed loading pipe 10 respectively, bleed off pipe 11, cement injection pipe 12, water glass adhesive pour into pipe 13; (11) after inserting rubble in described loading pipe 10, in described cement injection pipe 12, inject cement paste, stop when note has slurries to flow out in bleed off pipe 11 injecting cement paste, pour in pipe 13 at described water glass adhesive and pour into one deck water glass adhesive; (12) loading pipe 10 described in extraction, bleed off pipe 11, cement injection pipe 12, water glass adhesive pour into pipe 13; (13) the steel bushing concreting above hush panel described in 1-1 is being positioned at.
Copper bar 9 in preferred described step (5) binds round the splash guard 15 outer wall centre position at described two semicircle compositions.
Preferably in described step (9), be symmetrically welded four pieces seal board 4 with the steel bushing inwall circumference of foundation pad bottom same position, described hush panel 2 bottom is welded on sealing board 4.Advantage is: four pieces of sealing boards are firmly welded on steel bushing inwall circumferentially, and these four pieces sealing boards are equivalent to the bearing of hush panel, and hush panel is connected with steel bushing by sealing board securely.
A concrete label larger than underplate concrete in preferred described step (13).Advantage is: the steel bushing inner concrete above hush panel is after-pouring, and the large label of concrete can improve the concrete intensity in this position, thus with around steel bushing, underplate concrete are organically combined into an entirety.
Embodiment 1
(1) construction of dewatering well surrounding base bed course 6 is carried out; (2) bury the steel bushing 1 of the dewatering well shut-in well put in foundation ditch, described steel bushing outer wall is provided with steel plate for sealing water 3; (3) on described foundation pad 6 laying water-proof coiled material 7 and described waterproof roll 7 always along steel bushing 1 outer wall volume to steel plate for sealing water 3, then build pea gravel concreten topping 8 being positioned on the waterproof roll layer 7 on described foundation pad 6; (4) two semi-circular splash guards 15 docking are stuck on the waterproof roll outer wall being positioned on steel bushing 1 outer wall as shown in 7-1 in figure; (5) the whole splash guard 15 of copper bar 9 banding is adopted; (6) fluid sealant 5 is injected in the interface position docked at described two semi-circular splash guards 15 and whole splash guard 15 top and steel plate for sealing water 3 diapire intersection; (7) on described pea gravel concreten topping 8, base plate 14 reinforcing bar binding, base plate 14 concreting is carried out; (8) undertaken drawing water in dewatering well by steel bushing 1 according to on-site actual situations, exhaust recession pump; (9) bury in described steel bushing 1 and put hush panel 2, described hush panel 2 is reserved with feeding port, overfall, cement injection mouth, water glass adhesive pour into mouth; (10) pour in mouth at described reserved feeding port, overfall, cement injection mouth, water glass adhesive imbed loading pipe 10 respectively, bleed off pipe 11, cement injection pipe 12, water glass adhesive pour into pipe 13; (11) after inserting rubble in described loading pipe 10, in described cement injection pipe 12, inject cement paste, stop when note has slurries to flow out in bleed off pipe 11 injecting cement paste, pour in pipe 13 at described water glass adhesive and pour into one deck water glass adhesive; (12) loading pipe 10 described in extraction, bleed off pipe 11, cement injection pipe 12, water glass adhesive pour into pipe 13; (13) the steel bushing concreting above hush panel described in 1-1 is being positioned at, a concrete label larger than underplate concrete.
Through using, the inventive method structure is simple, and shut-in well system is tight, sealing effect good, sound construction.After inserting rubble in loading pipe, inject cement paste, waterproof after cement paste sclerosis, and the space between rubble is filled up, strengthen the intensity of dewatering well well head bottom ground, ensure the fastness of structure.There is priming charge glass cement in hush panel bottom surface in addition, in hush panel top face steel bushing, have the concrete of a large label of building, constitute a tight shut-in well system with surrounding floor concrete.And there is the dewatering well shut-in well system of triple waterproof effect function, first steel bushing outer wall is provided with steel plate for sealing water, secondly on foundation pad laying water-proof coiled material and described waterproof roll always along steel bushing outer wall volume to steel plate for sealing water, latter two semi-circular splash guard docking is stuck on the waterproof roll outer wall that is positioned on steel bushing outer wall.Whole dewatering well shut-in well waterproofing system solves dewatering well in foundation ditch and the waterproofing work of sole plate junction and the plugging dewatering well in later stage and waterproof well and the construction problem such as to close.
Embodiment 2
(1) construction of dewatering well surrounding base bed course 6 is carried out; (2) bury the steel bushing 1 of the dewatering well shut-in well put in foundation ditch, described steel bushing outer wall is provided with steel plate for sealing water 3; (3) on described foundation pad 6 laying water-proof coiled material 7 and described waterproof roll 7 always along steel bushing 1 outer wall volume to steel plate for sealing water 3, then build pea gravel concreten topping 8 being positioned on the waterproof roll layer 7 on described foundation pad 6; (4) two semi-circular splash guard 15 docking are stuck on the waterproof roll outer wall be positioned on steel bushing 1 outer wall; (5) the whole splash guard 15 of copper bar 9 banding is adopted; Copper bar 9 binds round the splash guard 15 outer wall centre position at described two semicircle compositions.(6) fluid sealant 5 is injected in the interface position docked at described two semi-circular splash guards 15 and whole splash guard 15 top and steel plate for sealing water 3 diapire intersection; (7) on described pea gravel concreten topping 8, base plate 14 reinforcing bar binding, base plate 14 concreting is carried out; (8) undertaken drawing water in dewatering well by steel bushing 1 according to on-site actual situations, exhaust recession pump; (9) bury in described steel bushing 1 and put hush panel 2, be symmetrically welded four pieces seal board 4 with the steel bushing inwall circumference of foundation pad bottom same position, described hush panel 2 bottom is welded on sealing board 4.Described hush panel 2 is reserved with feeding port, overfall, cement injection mouth, water glass adhesive pour into mouth; (10) pour in mouth at described reserved feeding port, overfall, cement injection mouth, water glass adhesive imbed loading pipe 10 respectively, bleed off pipe 11, cement injection pipe 12, water glass adhesive pour into pipe 13; (11) after inserting rubble in described loading pipe 10, in described cement injection pipe 12, inject cement paste, stop when note has slurries to flow out in bleed off pipe 11 injecting cement paste, pour in pipe 13 at described water glass adhesive and pour into one deck water glass adhesive; (12) loading pipe 10 described in extraction, bleed off pipe 11, cement injection pipe 12, water glass adhesive pour into pipe 13; (13) the steel bushing concreting above hush panel described in 1-1 is being positioned at, a concrete label larger than underplate concrete.
Through using, the inventive method structure is simple, and shut-in well system is tight, sealing effect good, sound construction.After inserting rubble in loading pipe, inject cement paste, waterproof after cement paste sclerosis, and the space between rubble is filled up, strengthen the intensity of dewatering well well head bottom ground, ensure the fastness of structure.There is priming charge glass cement in hush panel bottom surface in addition, in hush panel top face steel bushing, have the concrete of a large label of building, constitute a tight shut-in well system with surrounding floor concrete.And there is the dewatering well shut-in well system of triple waterproof effect function, first steel bushing outer wall is provided with steel plate for sealing water, secondly on foundation pad laying water-proof coiled material and described waterproof roll always along steel bushing outer wall volume to steel plate for sealing water, latter two semi-circular splash guard docking is stuck on the waterproof roll outer wall that is positioned on steel bushing outer wall.Other four pieces of sealing boards are firmly welded on steel bushing inwall circumferentially, and these four pieces sealing boards are equivalent to the bearing of hush panel, and hush panel is connected with steel bushing by sealing board securely.Whole dewatering well shut-in well waterproofing system solves dewatering well in foundation ditch and the waterproofing work of sole plate junction and the plugging dewatering well in later stage and waterproof well and the construction problem such as to close.
Claims (4)
1. a dewatering well shut-in well waterproof construction method, is characterized in that it comprises the following steps:
(1) construction of dewatering well surrounding base bed course is carried out;
(2) bury the steel bushing of the dewatering well shut-in well put in foundation ditch, described steel bushing outer wall is provided with steel plate for sealing water;
(3) on described foundation pad laying water-proof coiled material and described waterproof roll always along steel bushing outer wall volume to steel plate for sealing water, then build pea gravel concreten topping being positioned on the waterproof roll on described foundation pad;
(4) two semi-circular splash guard docking are stuck on the waterproof roll outer wall be positioned on steel bushing outer wall;
(5) the whole splash guard of copper bar banding is adopted;
(6) fluid sealant is injected on the interface position of described two semi-circular splash guards docking and whole splash guard top and steel plate for sealing water diapire intersection;
(7) on described pea gravel concreten topping, carry out base plate steel bar binding, underplate concrete builds;
(8) undertaken drawing water in dewatering well by steel bushing according to on-site actual situations, exhaust recession pump;
(9) bury in described steel bushing and put hush panel, described hush panel is reserved with feeding port, overfall, cement injection mouth, water glass adhesive pour into mouth;
(10) pour in mouth at described reserved feeding port, overfall, cement injection mouth, water glass adhesive imbed loading pipe respectively, bleed off pipe, cement injection pipe, water glass adhesive pour into pipe;
(11) after inserting rubble in described loading pipe, in described cement injection pipe, inject cement paste, note in bleed off pipe when having slurries to flow out and stop injecting cement paste, pour in pipe at described water glass adhesive and pour into one deck water glass adhesive;
(12) loading pipe described in extraction, bleed off pipe, cement injection pipe, water glass adhesive pour into pipe;
(13) the steel bushing concreting described in being positioned at above hush panel.
2. dewatering well shut-in well waterproof construction method according to claim 1, is characterized in that: the copper bar hoop in described step (5) is in described two semi-circular splash guard outer wall centre positions.
3. dewatering well shut-in well waterproof construction method according to claim 1 and 2, it is characterized in that: in described step (9), be symmetrically welded four pieces with the steel bushing inwall circumference of foundation pad bottom same position and seal board, described hush panel bottom is welded on sealing board.
4. dewatering well shut-in well waterproof construction method according to claim 3, is characterized in that: the label larger than underplate concrete of the concrete in described step (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210319837.3A CN102797266B (en) | 2012-08-31 | 2012-08-31 | Well sealing waterproof construction method for dewatering well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210319837.3A CN102797266B (en) | 2012-08-31 | 2012-08-31 | Well sealing waterproof construction method for dewatering well |
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| CN102797266A CN102797266A (en) | 2012-11-28 |
| CN102797266B true CN102797266B (en) | 2014-12-17 |
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| CN112647524A (en) * | 2020-12-18 | 2021-04-13 | 中国五冶集团有限公司 | Plugging method for dewatering well in foundation pit |
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