CN114351740A - Plugging method for high-water-level basement pressure-bearing dewatering well - Google Patents
Plugging method for high-water-level basement pressure-bearing dewatering well Download PDFInfo
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- CN114351740A CN114351740A CN202210043982.7A CN202210043982A CN114351740A CN 114351740 A CN114351740 A CN 114351740A CN 202210043982 A CN202210043982 A CN 202210043982A CN 114351740 A CN114351740 A CN 114351740A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 238000001556 precipitation Methods 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims description 26
- 239000004568 cement Substances 0.000 claims description 17
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 241001330002 Bambuseae Species 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
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- 230000003670 easy-to-clean Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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Abstract
The application relates to a plugging method for a high water level basement pressure-bearing dewatering well, which comprises the following steps: a water-stopping steel sleeve is installed; blind plate installation; blind plate processing; grouting; dismantling: dismounting the bolts between the flange plate and the blind plate, directly dismounting the blind plate after separating the blind plate, the waterproof rubber ring and the abutting device, and leaving the waterproof rubber ring and the abutting device inside the plug of the water-stopping steel sleeve; and (3) checking: checking whether water seepage occurs in the water stopping steel sleeve after the blind plate is removed, if no water seepage occurs, continuing the next step, and if water seepage occurs, installing and grouting the blind plate again; welding a permanent blocking plate: and a permanent plugging plate is welded inside the water-stopping steel sleeve. This application prevention of seepage water effect when can improving precipitation well shutoff.
Description
Technical Field
The application relates to the field of dewatering well plugging technology, in particular to a plugging method of a high-water-level basement pressure-bearing dewatering well.
Background
The traditional dewatering well plugging method includes the steps that a flange plate is welded in advance inside a water stop steel sleeve, after the main structure is capped, settled stably and a post-cast strip is completed, a dewatering pipe is taken out to stop dewatering, and a blind plate is installed on the flange plate to conduct plugging.
According to the related technology, the inventor thinks that when the groundwater pressure is higher, the blind plate is difficult to install, and after the blind plate is installed, water flow still exists between the flange plate and the blind plate to jet out, so that the plugging effect is not ideal.
Disclosure of Invention
In order to improve the shutoff effect, the application provides a shutoff method of high water level basement pressure-bearing precipitation well.
The application provides a blocking method of high water level basement pressure-bearing precipitation well adopts following technical scheme: a method for plugging a high water level basement pressure-bearing dewatering well comprises the following steps:
a water-stopping steel sleeve installation step: manufacturing a matched water-stopping steel sleeve according to the size of the precipitation well, lowering the water-stopping steel sleeve into the precipitation well, and welding a flange plate at the top of the water-stopping steel sleeve in advance to enable the flange plate to be positioned outside the precipitation well;
blind plate installation: bonding a circle of waterproof rubber ring matched with the inner pipe diameter of the water-stopping steel sleeve at the center of the plate surface of the blind plate, connecting a butting device on the plate surface of the blind plate positioned in the waterproof rubber ring, aligning the waterproof rubber ring to the water-stopping steel sleeve, putting the water-stopping steel sleeve into a precipitation well, butting the waterproof rubber ring on the inner wall of the water-stopping steel sleeve from the circumferential direction through the butting device, and finally connecting the blind plate with the flange plate through bolts;
blind plate processing: a water outlet and a grouting opening are formed in the blind plate, a ball valve is respectively arranged outside the water outlet and the grouting opening, the water outlet is connected with a drainage pump through a pipeline, and the grouting opening is connected with a grouting pump through a pipeline;
grouting: installing a three-way grouting pipeline outside the grouting port, closing a water outlet valve to stop precipitation, injecting fast-hardening cement slurry into one pipeline of the three-way grouting pipeline, injecting water glass-phosphoric acid composite slurry into the other pipeline, and injecting the fast-hardening cement slurry and the water glass-phosphoric acid composite slurry back and forth in multiple times until plugging is completed;
dismantling: dismounting the bolts between the flange plate and the blind plate, directly dismounting the blind plate after separating the blind plate, the waterproof rubber ring and the abutting device, and leaving the waterproof rubber ring and the abutting device inside the plug of the water-stopping steel sleeve;
and (3) checking: checking whether water seepage occurs in the water stopping steel sleeve after the blind plate is removed, if no water seepage occurs, continuing the next step, and if water seepage occurs, installing and grouting the blind plate again;
welding a permanent blocking plate: and a permanent plugging plate is welded inside the water-stopping steel sleeve.
By adopting the technical scheme, on the basis of the original construction method, the drain hole and the grouting hole are formed in the blind plate, and the ball valves are arranged outside the drain hole and the grouting hole, so that the grouting pressure can be set in advance, and the grouting process does not need manual operation; and the rapid hardening cement paste and the water glass-phosphoric acid composite solution are respectively injected through the grouting holes to fill the gap in the dewatering well, so that the problem of water leakage between the blind plate and the flange can be solved to a certain extent, and the welding quality of the permanent cover plate can be effectively ensured.
Optionally, the abutting device comprises a driven abutting assembly and a driving pushing assembly, the driving pushing assembly is mounted on the blind plate, and the driven abutting assembly is mounted on the blind plate and located in the waterproof rubber ring; the driven abutting component is used for abutting the waterproof rubber ring on the inner pipe wall of the water-stopping steel sleeve, and the driving pushing component is used for driving the driven abutting component to abut on the waterproof rubber ring.
Through adopting above-mentioned technical scheme, promote the subassembly through initiative and promote the butt to driven butt subassembly on waterproof rubber ring for waterproof rubber ring's outer wall butt is on the inner wall of stagnant water steel casing pipe, thereby can let water be difficult for going out from the gap between blind plate and the ring flange and flow, reaches the effect of shutoff.
Optionally, the driven abutting assembly comprises an abutting cylinder, a sliding-out pipe, an abutting rod and an arc-shaped abutting sheet; the abutting cylinder is vertically bonded on the surface of the blind plate and is positioned in the waterproof rubber ring, the sliding-out pipe is communicated and arranged on the abutting cylinder, the length direction of the sliding-out pipe is perpendicular to that of the abutting cylinder, and a plurality of sliding-out pipes are arranged; the abutting rod is inserted in the sliding-out pipe in a sliding mode, the arc abutting piece is installed at one end, far away from the sliding-out pipe, of the abutting rod, and the radian of the arc abutting piece is matched with that of the inner wall of the waterproof rubber ring; the active push assembly is used for extruding the abutting rod part out of the sliding pipe.
Through adopting above-mentioned technical scheme, push away the subassembly through the initiative and extrude slip-out pipe back to butt pole portion, the butt pole can take the arc to support the piece and move toward the inner wall side that is close to waterproof rubber ring, final butt is on the inner wall of waterproof rubber ring, and continue to exert pressure and can let the direct butt of waterproof rubber ring on the inner wall of stagnant water steel casing pipe, thereby let waterproof rubber ring can with the comparatively inseparable laminating of the inner wall of stagnant water steel casing pipe, water just is difficult for entering into in the gap between ring flange and the blind flange from stagnant water steel casing pipe this moment.
Optionally, the active pushing assembly includes a pushing rod, a through hole is formed in the blind plate, the through hole is communicated with the inside of the abutting cylinder, the pushing rod is inserted in the through hole in a sliding manner, an inclined pushing surface is arranged at one end of the pushing rod close to the abutting cylinder, and an inclined pushing matching surface in sliding fit with the inclined pushing surface is arranged at one end of the abutting rod close to the abutting cylinder.
Through adopting above-mentioned technical scheme, directly push the catch bar completely to the in-process in the butt section of thick bamboo from the through-hole, the push away face can occupy the position of oblique push fitting surface in the butt section of thick bamboo to impel the catch bar to push toward the roll-off pole intraductally, at this moment the catch bar can drive the arc to support the piece and contradict on the inner wall of waterproof rubber ring, thereby reach the drive arc and support the comparatively convenient and audio-visual effect of piece removal.
Optionally, after the push rod is completely pushed into the abutting cylinder from the through hole, the through hole is sealed by pouring concrete into the through hole.
By adopting the technical scheme, after the pipe barrel hole is plugged, underground water in the precipitation well cannot easily overflow from the through hole, and the plugging effect is achieved.
Optionally, the abutting rod is composed of a first rod body, a spring and a second rod body, the spring is coaxially connected between the first rod body and the second rod body, one end, far away from the spring, of the first rod body is connected with the arc abutting piece, and the inclined pushing matching surface is arranged at one end, far away from the spring, of the second rod body.
Through adopting above-mentioned technical scheme, move down when the catch bar and occupy the position back of butt joint pole, first body of rod receives the extrusion and enters into in the roll-off pipe, and first body of rod can extrude the spring this moment, the spring then continues to extrude the second body of rod to promote the second body of rod and drive the arc and support the piece and contradict on waterproof rubber ring, and the setting of spring can improve the whole fitness when extruding, is difficult for causing the extrusion motionless and the dead phenomenon of card to take place.
Optionally, the inner wall of the slip-out pipe is covered with polytetrafluoroethylene.
By adopting the technical scheme, the polytetrafluoroethylene is generally called as a non-stick coating or an easy-to-clean material. The material has the characteristics of high temperature resistance and extremely low friction coefficient, so that the material is coated on the inner wall of the slide-out pipe, and the abutting rod can slide more smoothly on the inner wall of the slide-out pipe.
Optionally, in the grouting step, the fast-hardening cement slurry is prepared by a fast-hardening cement slurry mixer.
By adopting the technical scheme, the preparation efficiency of the quick-hardening cement paste can be accelerated after the quick-hardening cement paste mixer is prepared.
Optionally, in the grouting step, the water glass-phosphoric acid composite slurry is prepared by a chemical slurry mixer.
By adopting the technical scheme, the chemical slurry mixer can accelerate the preparation efficiency of the water glass-phosphoric acid composite slurry.
Optionally, in the grouting step, an electric flow regulating valve is installed on the three-way grouting pipeline.
Through adopting above-mentioned technical scheme, electronic flow control valve can let drain pump and grouting pump pass through automatic program control, has set up grouting pressure in advance to improve grouting process's degree of automation.
In summary, the present application includes at least one of the following beneficial technical effects:
1. on the basis of the original construction method, a drain hole and a grouting hole are formed in the blind plate, and ball valves are arranged outside the drain hole and the grouting hole, so that grouting pressure can be set in advance, and manual operation is not needed in the grouting process; quick-hardening cement paste and a water glass-phosphoric acid composite solution are respectively injected through the grouting holes to fill the gap in the dewatering well, so that the problem of water leakage between the blind plate and the flange can be solved to a certain extent, and the welding quality of the permanent cover plate can be effectively ensured;
2. the driven abutting component is pushed to abut against the waterproof rubber ring through the driving pushing component, so that the outer wall of the waterproof rubber ring abuts against the inner wall of the water-stopping steel sleeve, water is not easy to flow out of a gap between the blind plate and the flange plate, and the effect of blocking is achieved;
3. after the slip pipe is extruded to butt pole portion through initiative promotion subassembly, the butt pole can take the arc to support the piece and move toward the inner wall side that is close to waterproof rubber ring, and final butt is on waterproof rubber ring's inner wall, and continue to exert pressure and can let waterproof rubber ring direct butt on stagnant water steel casing's inner wall, thereby let waterproof rubber ring can with the comparatively inseparable laminating of stagnant water steel casing's inner wall, water just is difficult for entering into in the gap between ring flange and the blind plate in the stagnant water steel casing this moment.
Drawings
Fig. 1 is a schematic connection relationship diagram of a water stop steel sleeve, a flange plate and a blind plate according to an embodiment of the present application.
Fig. 2 is a half-sectional view of fig. 1.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Description of reference numerals:
1. water stopping the steel sleeve; 2. a flange plate; 3. a blind plate; 31. a water outlet; 32. a grouting port; 33. a through hole; 4. a waterproof rubber ring; 5. an abutment device; 51. a driven abutment assembly; 511. a butting cylinder; 512. a slide-out tube; 513. a butting rod; 5131. a first rod body; 5132. a spring; 5133. a second rod body; 514. an arc-shaped abutting sheet; 52. an active push component; 521. a push rod; 6. obliquely pushing the surface; 7. the matching surface is obliquely pushed.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a method for plugging a water well by bearing pressure of a high-water-level basement, which comprises the following steps of:
a water-stopping steel sleeve installation step: manufacturing a matched water-stopping steel sleeve 1 according to the size of the precipitation well, lowering the water-stopping steel sleeve 1 into the precipitation well, and welding a flange 2 at the top of the water-stopping steel sleeve 1 in advance to enable the flange 2 to be positioned outside the precipitation well;
blind plate installation: a circle of waterproof rubber ring 4 matched with the inner pipe diameter of the water-stopping steel sleeve 1 is bonded at the center of the plate surface of the blind plate 3, a butting device 5 is installed on the plate surface of the blind plate 3 positioned in the waterproof rubber ring 4, the waterproof rubber ring 4 is placed into a precipitation well after being aligned to the water-stopping steel sleeve 1, then the waterproof rubber ring 4 is butted against the inner wall of the water-stopping steel sleeve 1 from the circumferential direction through the butting device 5, and finally the blind plate 3 is connected with the flange plate 2 through bolts;
blind plate processing: a water outlet 31 and a grouting opening 32 are formed in the blind plate 3, ball valves are respectively arranged outside the water outlet 31 and the grouting opening 32, the water outlet 31 is connected with a water drainage pump through a pipeline, and the grouting opening 32 is connected with a grouting pump through a pipeline; the drainage pump and the grouting pump are controlled by an automatic program, so that grouting pressure can be set in advance, and manual operation is not needed in the grouting process;
grouting: installing a three-way grouting pipeline outside the grouting port 32, closing a valve of the water outlet 31 to stop precipitation, injecting fast-hardening cement slurry into one pipeline of the three-way grouting pipeline, injecting water glass-phosphoric acid composite slurry into the other pipeline, and injecting the fast-hardening cement slurry and the water glass-phosphoric acid composite slurry back and forth in multiple times until plugging is completed; notably, the fast hardening cement slurry is prepared by a fast hardening cement slurry mixer; the water glass-phosphoric acid composite slurry is prepared by a chemical slurry mixer, and an electric flow regulating valve is arranged on the three-way grouting pipeline;
dismantling: dismounting bolts between the flange plate 2 and the blind plate 3, separating the blind plate 3 from the waterproof rubber ring 4 and the abutting device 5, and then directly dismounting the blind plate 3, wherein the waterproof rubber ring 4 and the abutting device 5 are left in the plug of the water-stopping steel sleeve 1;
and (3) checking: checking whether water seepage occurs in the water-stopping steel sleeve 1 after the blind plate 3 is removed, if no water seepage occurs, continuing the next step, and if water seepage occurs, installing and grouting the blind plate 3 again;
welding a permanent blocking plate: welding a permanent plugging plate inside the water-stopping steel sleeve 1; because the front blind plate 3 is installed with the external flange 2, a plugging plate matched with the inner diameter of the water-stopping steel sleeve 1 is installed after the blind plate is detached, so that the water-stopping steel sleeve 1 is completely plugged.
With reference to fig. 2 and 3, the abutment device 5 comprises a driven abutment assembly 51 and a driving pushing assembly 52, the driving pushing assembly 52 is mounted on the blind plate 3, the driven abutment assembly 51 is also mounted on the blind plate 3, and the driven abutment assembly 51 is located in the waterproof rubber ring 4. The driven abutting assembly 51 is used for abutting the waterproof rubber ring 4 on the inner wall of the water-stopping steel sleeve 1, and the driving pushing assembly 52 is used for driving the driven abutting assembly 51 to abut on the waterproof rubber ring 4, so that the waterproof rubber ring 4 can be abutted tightly on the inner wall of the water-stopping steel sleeve 1 after being abutted by the driven abutting assembly 51. At the moment, the waterproof rubber ring 4 can block the spreading route of water, namely, the water is not easy to enter a gap between the blind plate 3 and the flange plate 2 from the water-stopping steel sleeve 1.
With reference to fig. 2 and 3, the driven abutting assembly 51 includes an abutting cylinder 511, a sliding-out pipe 512, an abutting rod 513 and an arc-shaped abutting sheet 514; the abutting cylinder 511 is adhered to the blind plate 3, and it is noted that the adhering purpose is to conveniently separate the abutting cylinder 511 from the blind plate 3 when the blind plate 3 is detached in the later period; similarly, the waterproof rubber ring 4 is bonded on the blind plate 3, so that the waterproof rubber ring 4 is conveniently separated from the blind plate 3 in the later period. The axial direction of the abutting cylinder 511 is perpendicular to the plate surface of the blind plate 3, the sliding-out pipes 512 are communicated and arranged on the abutting cylinder 511, the length direction of the sliding-out pipes 512 is perpendicular to the length direction of the abutting cylinder 511, four sliding-out pipes 512 are arranged on the abutting cylinder 511, and the included angle between every two adjacent sliding-out pipes 512 is 90 degrees. A butting rod 513 is slidably inserted into each sliding tube 512, one end of the butting rod 513 is located in the butting cylinder 511, the other end of the butting rod extends out of the sliding tube 512, and an arc-shaped butting sheet 514 is welded at one end of the butting rod 513 located outside the sliding tube 512. The radian of the arc-shaped abutting piece 514 is matched with the radian of the inner wall of the waterproof rubber ring 4, namely, the arc-shaped abutting piece 514 can be normally abutted against the waterproof rubber ring 4. The active pushing assembly 52 is used to push the abutting rod 513 out of the sliding-out pipe 512 from the inside of the sliding-out pipe 512, so as to drive the arc-shaped abutting piece 514 to abut against the waterproof rubber ring 4, and finally the waterproof rubber ring 4 abuts against the inner wall of the water-stop steel casing 1.
With reference to fig. 2 and 3, the active pushing assembly 52 includes a pushing rod 521, a through hole 33 is formed in the blind plate 3, the through hole 33 is communicated with the inside of the abutting cylinder 511, the axis of the through hole 33 is aligned with the axis of the abutting cylinder 511, and the pushing rod 521 is slidably inserted in the through hole 33; one end of the pushing rod 521 close to the abutting cylinder 511 is provided with four inclined pushing surfaces 6, one end of each abutting rod 513 close to the abutting cylinder 511 is also provided with an inclined pushing matching surface 7, and the inclined pushing surfaces 6 are matched with the inclined pushing matching surfaces 7. It is noted that the length of the abutting cylinder 511 is longer than that of the push lever 521, so that the push lever 521 can be completely abutted from the through hole 33 into the push lever 521. After the pushing rod 521 is completely pushed into the abutting cylinder 511 from the through hole 33, the through hole 33 is sealed by pouring concrete into the through hole 33, so as to prevent water from overflowing from the through hole 33 and leaking after the blind plate 3 is bolted to the flange 2.
The in-process of pushing the catch bar 521 into the butt section of thick bamboo 511 completely in the through-hole 33 directly, the oblique push surface 6 can occupy the position of oblique push fitting surface 7 in the butt section of thick bamboo 511, butt pole 513 can take the arc to support piece 514 and move toward the inner wall side that is close to waterproof rubber ring 4, final butt is on waterproof rubber ring 4's inner wall, and continue to exert pressure and can let waterproof rubber ring 4 direct butt on the inner wall of stagnant water steel casing 1, thereby let waterproof rubber ring 4 can with the inseparable laminating of the inner wall of stagnant water steel casing 1, water just is difficult for entering into in the gap between ring flange 2 and the blind plate 3 from stagnant water steel casing 1 this moment.
As shown in fig. 2 and 3, in the embodiment, the abutting rod 513 is formed by combining a first rod 5131, a spring 5132 and a second rod 5133, one end of the spring 5132 is connected to the first rod 5131, and the other end is connected to the second rod 5133, and the first rod 5131 and the second rod 5133 are coaxially inserted into the slide-out tube 512. One end of the first rod 5131 away from the second rod 5133 and the spring 5132 is located in the abutting tube 511, and the inclined pushing matching surface 7 is disposed at the end of the first rod 5131 away from the second rod 5133. One end of the second rod 5133 away from the first rod 5131 and the end of the spring 5132 are located outside the slide-out tube 512, and the arc-shaped abutting piece 514 is welded to the end of the second rod 5133 away from the first rod 5131.
When the pushing rod 521 moves down to occupy the position of the abutting rod 513, the first rod body 5131 is extruded to enter the sliding-out pipe 512, and at this time, the first rod body 5131 can extrude the spring 5132, and the spring 5132 continues to extrude the second rod body 5133, so that the second rod body 5133 is pushed to drive the arc-shaped abutting piece 514 to abut against the waterproof rubber ring 4, and the spring 5132 can improve the overall adaptability during extrusion, thereby preventing the phenomenon of clamping caused by extrusion immobility. In addition, in order to make the first rod 5131 and the second rod 5133 slide more smoothly in the sliding-out tube 512, teflon is covered on the inner wall of the sliding-out tube 512.
The implementation principle of the method for plugging the water well by bearing the high-water-level basement is as follows: on the basis of the original construction method, a drain hole and a grouting hole are formed in the blind plate 3, and ball valves are arranged outside the drain hole and the grouting hole, so that grouting pressure can be set in advance, and manual operation is not needed in the grouting process; and the rapid hardening cement paste and the water glass-phosphoric acid composite solution are respectively injected through the grouting holes to fill the gap in the dewatering well, so that the problem of water leakage between the blind plate 3 and the flange plate 2 can be solved to a certain extent, and the welding quality of the permanent cover plate can be effectively ensured. The arrangement of the abutting device 5 and the waterproof rubber ring 4 can further improve the water seepage prevention effect during plugging.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A method for plugging a high water level basement pressure-bearing dewatering well is characterized by comprising the following steps: a water-stopping steel sleeve installation step: manufacturing a matched water-stopping steel sleeve (1) according to the size of the precipitation well, lowering the water-stopping steel sleeve (1) into the precipitation well, and welding a flange plate (2) at the top of the water-stopping steel sleeve (1) in advance to enable the flange plate (2) to be positioned outside the precipitation well;
blind plate installation: a circle of waterproof rubber ring (4) matched with the inner pipe diameter of the water-stopping steel sleeve (1) is bonded at the center of the plate surface of the blind plate (3), a butting device (5) is installed on the plate surface of the blind plate (3) positioned in the waterproof rubber ring (4), the waterproof rubber ring (4) is placed into a precipitation well after being aligned to the water-stopping steel sleeve (1), then the waterproof rubber ring (4) is butted against the inner wall of the water-stopping steel sleeve (1) from the circumferential direction through the butting device (5), and finally the blind plate (3) is connected with the flange plate (2) through bolts;
blind plate processing: a water outlet (31) and a grouting opening (32) are formed in the blind plate (3), a ball valve is respectively arranged outside the water outlet (31) and the grouting opening (32), the water outlet (31) is connected with a drainage pump through a pipeline, and the grouting opening (32) is connected with a grouting pump through a pipeline;
grouting: installing a three-way grouting pipeline outside the grouting port (32), closing a water outlet (31) and stopping precipitation by a valve, injecting fast-hardening cement slurry into one pipeline of the three-way grouting pipeline, injecting water glass-phosphoric acid composite slurry into the other pipeline, and injecting the fast-hardening cement slurry and the water glass-phosphoric acid composite slurry in front and back times until plugging is finished;
dismantling: dismounting bolts between the flange plate (2) and the blind plate (3), directly dismounting the blind plate (3) after separating the blind plate (3), the waterproof rubber ring (4) and the abutting device (5), and leaving the waterproof rubber ring (4) and the abutting device (5) inside the plug of the water-stopping steel sleeve (1);
and (3) checking: checking whether water seeps in the water-stopping steel sleeve (1) after the blind plate (3) is removed, if no water seeps, continuing the next step, and if water seeps, installing and grouting the blind plate (3) again;
welding a permanent blocking plate: and a permanent plugging plate is welded inside the water-stopping steel sleeve (1).
2. The method for plugging the high water level basement pressure-bearing dewatering well according to claim 1, characterized in that: the abutting device (5) comprises a driven abutting assembly (51) and a driving pushing assembly (52), the driving pushing assembly (52) is installed on the blind plate (3), and the driven abutting assembly (51) is installed on the blind plate (3) and located in the waterproof rubber ring (4); the driven abutting component (51) is used for abutting the waterproof rubber ring (4) on the inner pipe wall of the water-stop steel sleeve (1), and the driving pushing component (52) is used for driving the driven abutting component (51) to abut on the waterproof rubber ring (4).
3. The method for plugging the high water level basement pressure-bearing dewatering well according to claim 2, characterized in that: the driven abutting assembly (51) comprises an abutting cylinder (511), a sliding-out pipe (512), an abutting rod (513) and an arc abutting sheet (514); the butt joint cylinder (511) is vertically bonded on the surface of the blind plate (3) and is positioned in the waterproof rubber ring (4), the sliding pipe (512) is communicated and arranged on the butt joint cylinder (511), the length direction of the sliding pipe (512) is perpendicular to that of the butt joint cylinder (511), and a plurality of sliding pipes (512) are arranged; the abutting rod (513) is inserted into the sliding pipe (512) in a sliding mode, the arc abutting sheet (514) is installed at one end, far away from the sliding pipe (512), of the abutting rod (513), and the radian of the arc abutting sheet (514) is matched with that of the inner wall of the waterproof rubber ring (4); the active push assembly (52) is used to partially extrude the abutment bar (513) out of the slide out tube (512).
4. The method for plugging the high water level basement pressure-bearing dewatering well according to claim 3, characterized in that: initiative push assembly (52) include catch bar (521), perforating hole (33) have been seted up on blind plate (3), perforating hole (33) are linked together with the inside of a butt section of thick bamboo (511), catch bar (521) slide and insert and establish in perforating hole (33), catch bar (521) are close to the one end of a butt section of thick bamboo (511) and are provided with oblique push surface (6), butt joint pole (513) are close to the one end of a butt section of thick bamboo (511) and are provided with and push away mating surface (7) to one side of face (6) sliding fit.
5. The method for plugging the high water level basement pressure-bearing dewatering well according to claim 4, characterized in that: after the push rod (521) is completely pushed into the abutting cylinder (511) from the through hole (33), the through hole (33) is sealed by pouring concrete into the through hole (33).
6. The method for plugging the high water level basement pressure-bearing dewatering well according to claim 4, characterized in that: the butt-joint rod (513) comprises a first rod body (5131), a spring (5132) and a second rod body (5133), the spring (5132) is coaxially connected between the first rod body (5131) and the second rod body (5133), one end, far away from the spring (5132), of the first rod body (5131) is connected with the arc-shaped butt piece (514), and the inclined push matching surface (7) is arranged at one end, far away from the spring (5132), of the second rod body (5133).
7. The method for plugging the high water level basement pressure-bearing dewatering well according to claim 3, characterized in that: the inner wall of the slip-out pipe (512) is covered with polytetrafluoroethylene.
8. The method for plugging the high water level basement pressure-bearing dewatering well according to claim 1, characterized in that: in the grouting step, the quick-hardening cement slurry is prepared by a quick-hardening cement slurry mixer.
9. The method for plugging the high water level basement pressure-bearing dewatering well according to claim 1, characterized in that: in the grouting step, the water glass-phosphoric acid composite slurry is prepared by a chemical slurry mixer.
10. The method for plugging the high water level basement pressure-bearing dewatering well according to claim 1, characterized in that: in the grouting step, an electric flow regulating valve is installed on the three-way grouting pipeline.
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| CN202210043982.7A CN114351740A (en) | 2022-01-14 | 2022-01-14 | Plugging method for high-water-level basement pressure-bearing dewatering well |
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| CN202210043982.7A CN114351740A (en) | 2022-01-14 | 2022-01-14 | Plugging method for high-water-level basement pressure-bearing dewatering well |
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Application publication date: 20220415 |