CN216739709U - A block structure that is used for high water pressure high water level precipitation well head - Google Patents
A block structure that is used for high water pressure high water level precipitation well head Download PDFInfo
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- CN216739709U CN216739709U CN202122377553.7U CN202122377553U CN216739709U CN 216739709 U CN216739709 U CN 216739709U CN 202122377553 U CN202122377553 U CN 202122377553U CN 216739709 U CN216739709 U CN 216739709U
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- dewatering well
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 238000001556 precipitation Methods 0.000 title description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 86
- 239000010959 steel Substances 0.000 claims abstract description 86
- 239000010410 layer Substances 0.000 claims abstract description 67
- 239000011241 protective layer Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 5
- 239000010985 leather Substances 0.000 claims description 4
- 239000004746 geotextile Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 2
- 238000004078 waterproofing Methods 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a plugging structure for a wellhead of a high-water-pressure high-water-level dewatering well, which comprises a sand-free well pipe, wherein a steel sleeve is sleeved at the upper end of the sand-free well pipe, a water-stopping wing ring is connected to the middle part of the outer wall of the steel sleeve, a waterproof coiled material is arranged below the root part of the water-stopping wing ring, the bottom surface of the waterproof coiled material is embedded between a cushion layer and a waterproof protective layer, a base plate is arranged at the upper end of the waterproof protective layer, a first water-stopping steel plate is arranged at an opening at the upper end of the sand-free well pipe, a submersible pump is arranged in a dewatering well below the first water-stopping steel plate, a power line and a drain pipe of the submersible pump penetrate through two through holes of the first water-stopping steel plate respectively, a filling layer I is arranged above the first water-stopping steel plate, and a filling layer II is arranged above the filling layer I. The method greatly improves the success rate of plugging the high-water-pressure high-water-level dewatering well mouth, ensures the quality of plugging the dewatering well mouth, is simple and convenient to operate, has strong practicability and improves the working efficiency.
Description
Technical Field
The utility model relates to the technical field of plugging of dewatering wells in constructional engineering, in particular to a plugging structure for a wellhead of a high-water-pressure dewatering well.
Background
In general work progress, well point precipitation well precipitation uses comparatively extensively, and ordinary precipitation well shutoff is comparatively general, and high water pressure high water level precipitation well appears rarely. The commonly adopted method for plugging the ordinary dewatering well at the present stage comprises the following steps: firstly, placing a steel sleeve of a dewatering well with a water stop wing ring 100mm higher than a foundation slab before cushion layer construction; waterproof winding up to the bottom of a water stopping wing ring of the steel sleeve; thirdly, pouring a waterproof protective layer and constructing a bottom plate; fourthly, sealing the post-pouring belt after the design settlement requirement is met; fifthly, after the anti-floating design requirement is met, pumping out a water pump, plugging a dewatering well, backfilling anti-permeability micro-expansive concrete which is higher than the bottom plate by one mark in the dewatering well until the concrete is 100mm higher than the top mark of the bottom plate, and vibrating and compacting; sixthly, when the strength of the concrete is stable and no water seeps out, cutting the steel sleeve to the surface of the concrete, and welding a steel plate with the thickness of 10mm in a tissue welding mode; seventhly, pouring impervious micro-expansion concrete which is higher than the bottom plate by one mark at the upper part of the steel plate to finish plugging of the dewatering well; when a high-water-pressure high-water-level precipitation well is met, impervious micro-expansive concrete which is higher than the bottom plate by one grade is backfilled into the precipitation well, the concrete cannot be solidified, can be scattered and washed empty by high-water pressure, loses the characteristic of the concrete, and cannot form effective sealing. Therefore, it is necessary to discuss how to complete the plugging and ensure the plugging effect when a high-water-pressure high-water-level precipitation well is encountered.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems in the prior art, the utility model provides a plugging structure for a wellhead of a high-water-pressure high-water-level dewatering well, which can solve the problems.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
a plugging structure for a wellhead of a high-water-pressure high-water-level dewatering well comprises a sand-free well pipe, wherein a steel sleeve is sleeved at the upper end of the sand-free well pipe, the middle part of the outer wall of the steel sleeve is connected with a water-stopping wing ring, a waterproof coiled material is arranged below the root part of the water-stopping wing ring, the bottom surface of the waterproof roll is embedded between the cushion layer and the waterproof protective layer, the upper end of the waterproof protective layer is provided with a foundation slab, a first water stop steel plate is arranged at an opening at the upper end of the sand-free well pipe, a submersible pump is arranged in the dewatering well below the first water stop steel plate, a power line and a drain pipe of the submersible pump respectively penetrate out of the two through holes of the first water stop steel plate, a first filling layer is arranged above the first water stop steel plate, a second filling layer is arranged above the first filling layer, and a second water stopping steel plate is arranged above the second filling layer, and a third filling layer is arranged above the second water stopping steel plate.
Further, the bottom of the sand-free well pipe is wrapped by geotextile.
Further, the inner diameter of the steel sleeve is slightly larger than the outer diameters of the sand-free well pipe, the first water stop steel plate and the second water stop steel plate.
Further, the cushion layer (6) is a common concrete filling layer, the foundation slab (16) is an impervious concrete filling layer, the first filling layer and the third filling layer are impervious micro-expansion concrete filling layers which are higher than the foundation slab by a mark number, the second filling layer is a mixed filling layer of dry cement and plugging agent, and the waterproof protective layer is a fine aggregate concrete filling layer.
Furthermore, the drain pipe can be dismantled through the mantle fiber connecting pipe and connect the long drain pipe, the power cord the drain pipe with be equipped with sealed leather collar between two through-holes of first stagnant water steel sheet respectively.
Further, the mantle fiber connecting pipe is provided with a matched plug.
Furthermore, the upper surface of the waterproof protective layer is flush with the lower surface of the first water stop steel plate, and the upper surface of the filling layer III is flush with the upper surface of the foundation slab.
Furthermore, the first water stop steel plate and the second water stop steel plate are welded on the inner wall of the steel sleeve, and the upper surface of the second water stop steel plate is level to the upper end opening surface of the steel sleeve.
The utility model has the beneficial effects that: the method greatly improves the success rate of plugging the high-water-pressure high-water-level dewatering well mouth, ensures the quality of plugging the dewatering well mouth, is simple and convenient to operate, has strong practicability and improves the working efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is an overall schematic diagram of a plugging structure for a wellhead of a high-water-pressure high-water-level dewatering well according to an embodiment of the utility model;
FIG. 2 is a schematic diagram of the installation of a steel casing of a dewatering well for a plugging structure of a wellhead of a dewatering well with a high water pressure and a high water level according to an embodiment of the utility model;
fig. 3 is a schematic view of the installation of a first water stop steel plate of the plugging structure for the wellhead of the high-water-pressure high-water-level dewatering well according to the embodiment of the utility model;
fig. 4 is a schematic sealing diagram of a filling layer of a sealing structure for a wellhead of a high-water-pressure high-water-level dewatering well according to an embodiment of the utility model;
FIG. 5 is a schematic diagram of a second filling layer of the plugging structure for the wellhead of the high-water-pressure high-water-level dewatering well according to the embodiment of the utility model;
fig. 6 is a schematic view of the installation of a second water stop steel plate of the plugging structure for the wellhead of the high-water-pressure high-water-level dewatering well according to the embodiment of the utility model.
In the figure: 1. dewatering wells; 2. a sand-free well pipe; 3. steel casing; 4. a water-stopping wing ring; 5. waterproof coiled materials; 6. a cushion layer; 7. a first water stop steel plate; 8. a submersible pump; 9. a power line; 10. a drain pipe; 11. filling a first layer; 12. a waterproof protective layer; 13. a second filling layer; 14. a second water stop steel plate; 15. a third filling layer; 16. a foundation sole plate; 17. a mantle fiber connecting pipe; 18. a long drainage pipe; 19. and (5) plugging with a thread.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1-6, a plugging structure for a high-water-pressure high-water-level dewatering well mouth comprises a sand-free well pipe 2, a steel sleeve 3 is sleeved at the upper end of the sand-free well pipe 2, a water stop wing ring 4 is connected to the middle of the outer wall of the steel sleeve 3, a waterproof coiled material 5 is arranged below the root of the water stop wing ring 4, the bottom surface of the waterproof coiled material 5 is buried between a cushion layer 6 and a waterproof protective layer 12, a base plate 16 is arranged at the upper end of the waterproof protective layer 12, a first water stop steel plate 7 is arranged at an upper end opening of the sand-free well pipe 2, a submersible pump 8 is arranged in a dewatering well 1 below the first water stop steel plate 7, a power line 9 and a drain line 10 of the submersible pump 8 respectively penetrate through two through holes of the first water stop steel plate 7, a first filling layer 11 is arranged above the first water stop steel plate 7, a second filling layer 13 is arranged above the first filling layer 11, and a second water stop steel plate 14 is arranged above the second filling layer 13, and a third filling layer 15 is arranged above the second water stop steel plate 14.
In a specific embodiment of the present invention, the bottom of the sand-free well pipe 2 is wrapped by geotextile, the inner diameter of the steel casing 3 is slightly larger than the outer diameters of the sand-free well pipe 2, the first water stop steel plate 7 and the second water stop steel plate 14, the cushion layer 6 is a common concrete filling layer, the foundation slab 16 is an impervious concrete filling layer, the first filling layer 11 and the third filling layer 15 are impervious micro-expansion concrete filling layers which are higher than the foundation slab 16 by a label, the second filling layer 13 is a mixed filling layer of dry cement and plugging agent, the waterproof layer 12 is a fine aggregate concrete filling layer, the drain pipe 10 is detachably connected with a long drain pipe 18 through a threading connecting pipe 17, sealing leather rings are respectively arranged between the two through holes of the power line 9, the drain pipe 10 and the first water stop steel plate 7, the threading connecting pipe 17 is provided with a matching threading plug 19, the upper surface of the waterproof protective layer 12 is level with the lower surface of the first water stop steel plate 7, the upper surface of the third filling layer 15 is level with the upper surface of the foundation slab 16, the first water stop steel plate 7 and the second water stop steel plate 14 are both welded on the inner wall of the steel sleeve 3, and the upper surface of the second water stop steel plate 14 is level with the upper end opening surface of the steel sleeve 3.
In order to facilitate understanding of the above-described aspects of the present invention, the above-described aspects of the present invention will be described in detail below with reference to a specific embodiment of the present application.
When the wellhead of the dewatering well 1 has high water pressure and high water level, the construction method comprises the following construction steps: a. utilize immersible pump 8 to draw water (according to gushing water rising speed in the well, select corresponding power's immersible pump 8), when the water level drops to no sand well pipe 2's mouth of pipe below, select steel casing pipe 3 No. 1 bigger than the precipitation well, weld stagnant water wing ring 4 (for the ring dress structure) in steel casing pipe 3 outer wall middle part, adopt two-sided welding, place on basic unit's ground and entangle no sand well pipe 3 after the welding seam is full, pour concrete layer (6 bedding course promptly) and make it fixed. b. The waterproof coiled material 5 is laid on the cushion layer 6, the waterproof coiled material is rolled up to the root part of the water-stopping wing ring 4, a fine stone and concrete mixed soil layer (namely, a waterproof protective layer 12) is horizontally poured on the waterproof coiled material 5, and then a concrete layer (namely, a foundation slab 16) is poured on the waterproof protective layer 12. c. Two round holes are cut on a first water stop steel plate 7 (a 10mm thick steel plate which is 10mm smaller than the diameter of the steel sleeve 3 can be selected) according to the diameter of a drain pipe 10 and the diameter of a power line 9, the drain pipe 10 and the power line 9 respectively pass through the two holes, the passed drain pipe 10 is continuously connected with a drain long pipe 18 through a mantle fiber connecting pipe 17 for draining, and the water level is controlled below the pipe orifice of the sand-free well pipe 2 (the height of the upper part of the mantle fiber connecting pipe 17 is controlled to be 130mm below a foundation bottom plate 16 for subsequent plug installation). d. The first water stop steel plate 7 is placed at the pipe opening of the sand-free well pipe 2 and welded with the steel sleeve 3, sealing leather rings are arranged between the power line 9, the drain pipe 10 and the two through holes of the first water stop steel plate 7 respectively for sealing, and slurry is prevented from flowing into the dewatering well 1 from gaps during later concrete pouring to block the submersible pump 8. e. And backfilling impervious micro-expansive concrete which is higher than the foundation slab 16 by one mark and is higher than the foundation slab by 150mm (namely a first filling layer 11) to the upper part of the first water stop steel plate 7, flattening after vibration is finished, observing for 24 hours, observing whether the water seepage phenomenon exists, pulling out the upper-section drainage long pipe 18 after the concrete is reinforced, installing a plug 19 by using an auxiliary tool, observing for 24 hours, and observing whether the water seepage phenomenon exists. f. And (3) paving a proper amount of dry cement and leakage stoppage agent mixture (namely a filling layer II 13) above the filling layer I11, placing a second water stop steel plate 14 with the height being 100mm below the top elevation of the bottom plate, welding the second water stop steel plate with the steel sleeve 3, and cutting off the steel sleeve 3 at the upper part of the second water stop steel plate 14. g. And backfilling impervious micro-expansive concrete (namely a filling layer III) which is higher than the bottom plate by one mark at the upper part of the second water stop steel plate 14, and leveling with the foundation bottom plate 16 after the vibration is finished, namely finishing the plugging of the dewatering well.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a block structure for high water pressure high water level dewatering well head, its characterized in that, includes no sand well pipe (2), a steel casing pipe (3) has been cup jointed to no sand well pipe (2) upper end, the outer wall middle part of steel casing pipe (3) is connected with stagnant water wing ring (4), stagnant water wing ring (4) root below is equipped with waterproofing membrane (5), the bottom surface of waterproofing membrane (5) is buried underground between bed course (6) and water proof layer (12), water proof layer (12) upper end is equipped with soleplate (16), the upper end opening part of no sand well pipe (2) is equipped with first stagnant water steel sheet (7), be equipped with a immersible pump (8) in dewatering well (1) of first stagnant water steel sheet (7) below, power cord (9), drain pipe (10) of immersible pump (8) are followed respectively two through-holes of first stagnant water steel sheet (7) are worn out, first stagnant water steel sheet (7) top is equipped with filling layer one (11), the top of filling layer one (11) is equipped with filling layer two (13), filling layer two (13) top is equipped with second stagnant water steel sheet (14), second stagnant water steel sheet (14) top is equipped with filling layer three (15).
2. The plugging structure for the wellhead of high-water-pressure high-water-level dewatering well according to claim 1, characterized in that the bottom of the sand-free well pipe (2) is wrapped by geotextile.
3. The plugging structure for the wellhead of the high-water-pressure high-water-level dewatering well according to claim 1, characterized in that the inner diameter of the steel casing (3) is larger than the outer diameters of the sand-free well pipe (2), the first water stop steel plate (7) and the second water stop steel plate (14).
4. The plugging structure for the wellhead of high-water-pressure high-water-level dewatering well according to claim 1, characterized in that the cushion layer (6) is a common concrete filling layer, the foundation slab (16) is an impervious concrete filling layer, the first filling layer (11) and the third filling layer (15) are impervious micro-expansion concrete filling layers which are higher than the foundation slab (16) by one mark, and the waterproof protective layer (12) is a fine stone concrete filling layer.
5. The plugging structure for the wellhead of the high-water-pressure high-water-level dewatering well according to claim 1, characterized in that the water draining pipe (10) is detachably connected with a water draining long pipe (18) through a mantle fiber connecting pipe (17), and sealing leather rings are respectively arranged between the power line (9), the water draining pipe (10) and the two through holes of the first water stop steel plate (7).
6. The plugging structure for the wellhead of high water pressure and high water level dewatering well according to claim 5 is characterized in that the mantle fiber connecting pipe (17) is equipped with a matching plug (19).
7. The plugging structure for the wellhead of high-water-pressure high-water-level dewatering well according to claim 1, characterized in that the upper surface of the waterproof protective layer (12) is level with the lower surface of the first water stop steel plate (7), and the upper surface of the filling layer three (15) is level with the upper surface of the foundation bed plate (16).
8. The plugging structure for the wellhead of the high-water-pressure high-water-level dewatering well according to claim 1, characterized in that the first water-stop steel plate (7) and the second water-stop steel plate (14) are welded on the inner wall of the steel casing (3), and the upper surface of the second water-stop steel plate (14) is level with the upper end opening surface of the steel casing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122377553.7U CN216739709U (en) | 2021-09-29 | 2021-09-29 | A block structure that is used for high water pressure high water level precipitation well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122377553.7U CN216739709U (en) | 2021-09-29 | 2021-09-29 | A block structure that is used for high water pressure high water level precipitation well head |
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| Publication Number | Publication Date |
|---|---|
| CN216739709U true CN216739709U (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122377553.7U Active CN216739709U (en) | 2021-09-29 | 2021-09-29 | A block structure that is used for high water pressure high water level precipitation well head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216739709U (en) |
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2021
- 2021-09-29 CN CN202122377553.7U patent/CN216739709U/en active Active
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