CN109881692B - Preassembled dewatering well - Google Patents
Preassembled dewatering well Download PDFInfo
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- CN109881692B CN109881692B CN201910221298.1A CN201910221298A CN109881692B CN 109881692 B CN109881692 B CN 109881692B CN 201910221298 A CN201910221298 A CN 201910221298A CN 109881692 B CN109881692 B CN 109881692B
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- pipe
- water stop
- water
- well
- filter
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 239000004576 sand Substances 0.000 claims abstract description 33
- 238000004062 sedimentation Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 45
- 238000001556 precipitation Methods 0.000 claims description 7
- 239000004927 clay Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 13
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a preassembled dewatering well, which comprises a drilling hole and a prefabricated member assembly, wherein the prefabricated member assembly is arranged in the drilling hole; the prefabricated member assembly comprises a well pipe, a filter, a sedimentation pipe, a plurality of water stop sheets, a plurality of reserved grouting pipes and a plurality of sand filling pipes, wherein the filter is connected with the well pipe and is positioned at the bottom of the well pipe, and the sedimentation pipe is connected with the bottom of the filter; the water stopping sheets are fixed on the outer wall of the well pipe at intervals and are positioned above the filter; the reserved grouting pipe and the sand filling pipe are respectively arranged on the outer side of the well pipe along the axial direction of the well pipe and fixedly connected with the water stopping sheet; the bottom end of the reserved grouting pipe extends into a water stop sheet positioned at the top of each water stop sheet and a water stop sheet positioned at the bottom of each water stop sheet; the bottom end of the sand filling pipe extends into the lower part of each water stopping sheet. The preassembled dewatering well disclosed by the invention has the advantages of large water quantity, good water stopping effect, good subsequent maintenance effect, environment friendliness and capability of bringing about good influence on subsequent engineering, and is not easy to produce sand.
Description
Technical Field
The invention relates to the technical field of drilling dewatering wells, in particular to a preassembled dewatering well.
Background
Poor quality of precipitation wells is one of the biggest hidden trouble of precipitation engineering, and current precipitation wells generally have the problems of small water quantity, poor water stopping effect and subsequent incapability of maintenance, and sand can not be repaired, and sequelae is difficult to solve, and has great subsequent hidden trouble.
At present, a precipitation well which has large water quantity, good water stopping effect, good subsequent maintenance effect, difficult sand discharge, environment friendliness and good influence on subsequent engineering is not available.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the preassembled dewatering well which has the advantages of large water quantity, good water stopping effect, good subsequent maintenance effect, difficult sand discharge, environmental protection and good influence on subsequent engineering.
In order to achieve the above object, the present invention provides a preassembled dewatering well, comprising a borehole and a prefabricated member assembly, wherein the prefabricated member assembly is arranged in the borehole; the prefabricated member assembly comprises a well pipe, a filter, a sedimentation pipe, a plurality of water stop sheets, a plurality of reserved grouting pipes and a plurality of sand filling pipes, wherein the filter is connected with the well pipe and is positioned at the bottom of the well pipe, and the sedimentation pipe is connected with the bottom of the filter; the water stopping sheets are fixed on the outer wall of the well pipe at intervals and are positioned above the filter; the reserved grouting pipe and the sand filling pipe are respectively arranged on the outer side of the well pipe along the axial direction of the well pipe and fixedly connected with the water stop sheet; the bottom end of the reserved grouting pipe extends into a space between one water stop sheet positioned at the top of each water stop sheet and one water stop sheet positioned at the bottom of each water stop sheet; the bottom end of the sand filling pipe extends into the lower part of each water stopping sheet.
Preferably, each water stop sheet is matched to form a sand filling pipe channel, and the sand filling pipe penetrates through the sand filling pipe channel and is fixedly connected with the water stop sheet; the water stop sheets are arranged at the tops of the water stop sheets to form a reserved grouting pipe through hole, and the reserved grouting pipe is arranged in the reserved grouting pipe through hole in a penetrating mode and fixedly connected with the water stop sheets.
Preferably, the water stop sheet is annular and has a ring width equal to or close to the distance between the borehole and the well pipe.
Preferably, the prefabricated member assembly further comprises a first water stop material layer; the first water stopping material layer is coated outside the well pipe and the water stopping sheet and is positioned above the filter.
Preferably, the water stop rubber belt is coated on the outer part of the first water stop material layer.
Preferably, the distance between the bottom end of the reserved grouting pipe and the top surface of the first water stop material layer is less than or equal to one third of the length of the first water stop material layer.
Preferably, the water-stopping device further comprises a filter material layer, wherein the filter material layer is filled between the well pipe and the drilling hole, between the drilling hole and the filter and between the drilling hole and the sedimentation pipe which are arranged below the first water-stopping material layer.
Preferably, the well pipe further comprises a second water stop material layer, and the second water stop material layer is filled between the well pipe and the drilling hole above the first water stop material layer.
Preferably, the water stop system further comprises a concrete layer arranged between the well pipe and the borehole above the second water stop material layer.
Preferably, the first water stop material layer comprises a clay sphere layer; the second water stop material layer comprises a water stop clay layer.
The invention adopts the technical proposal, which has the following beneficial effects:
the prefabricated member assembly is formed by preassembling the well pipe, the filter, the water stopping sheet, the reserved grouting pipe, the sand filling pipe and the first water stopping material layer, so that the prefabricated member assembly can be formed at one time when the dewatering well is manufactured, then the prefabricated member assembly is drilled at one time, the construction is convenient and fast, and the human construction errors caused by uncertain factors of human construction procedures can be greatly reduced, thereby ensuring the processing quality of the dewatering well; in addition, during subsequent maintenance, the integrated prefabricated member assembly structure can facilitate overground part grouting and lower part sand filling, and is convenient for later maintenance. The first water stop material layer can be expanded after the prefabricated member assembly enters the hole once and then meets water, so that the water stop effect can be effectively ensured, meanwhile, no slurry exists between the filter and the filter material layer, the filter material is uniform, and the large water yield can be ensured. The water stopping effect of the dewatering well can be further improved by adopting the water stopping rubber belt. The first water-stopping material layer is arranged above the filter material layer, and the water-stopping sheet is further arranged in the first water-stopping material layer, so that sand discharge of the filter material layer can be effectively prevented.
Drawings
FIG. 1 is a schematic view of a prefabricated component of a preassembled dewatering well according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the overall structure of a preassembled dewatering well according to an embodiment of the present invention.
Detailed Description
The following description of the preferred embodiments of the present invention will be given with reference to fig. 1 and 2, so that the function and features of the present invention can be better understood.
Referring to fig. 1 and 2, a preassembled dewatering well according to an embodiment of the present invention includes a borehole 1 and a prefabricated member assembly 2, wherein the prefabricated member assembly 2 is disposed in the borehole 1; the prefabricated member assembly 2 comprises a well pipe 21, a filter 22, a sedimentation pipe 28, a plurality of water stop sheets 23, a plurality of reserved grouting pipes 24 and a plurality of sand filling pipes 25, wherein the filter 22 is connected with the well pipe 21 and is positioned at the bottom of the well pipe 21, the sedimentation pipe 28 is connected with the bottom of the filter 22, and the diameter of the filter 22 can be enlarged; the water stop sheets 23 are fixed on the outer wall of the well pipe 21 at intervals and are positioned above the filter 22; the reserved grouting pipe 24 and the sand filling pipe 25 are respectively arranged on the outer side of the well pipe 21 along the axial direction of the well pipe 21 and are fixedly connected with the water stop sheet 23; the bottom end of the reserved grouting pipe 24 extends into a water stop sheet 23 positioned at the top of each water stop sheet 23 and between one water stop sheet 23 positioned at the bottom of each water stop sheet 23; the bottom end of the sand filling pipe 25 extends into the lower part of each water stop sheet 23.
In this embodiment, each water stop sheet 23 is matched to form a sand filling pipe channel, and the sand filling pipe 25 is arranged in the sand filling pipe channel in a penetrating way and is fixedly connected with the water stop sheet 23; a water stop sheet 23 positioned at the top of each water stop sheet 23 forms a reserved grouting pipe through hole, and a reserved grouting pipe 24 is arranged in the reserved grouting pipe through hole in a penetrating way and is fixedly connected with the water stop sheet 23. The sand filling pipe 25 can be used as an observation well in addition to the function of filling the filter material.
The water stop sheet 23 is annular and the annular width of the water stop sheet 23 is equal to or close to the distance between the borehole 1 and the well pipe 21.
In addition, the preform assembly 2 further comprises a first water stop layer 26; the first water stop material layer 26 is coated outside the well pipe 21 and the water stop sheet 23 and is positioned above the filter 22. The outside of the first water stop material layer 26 is covered with a water stop rubber tape 27.
The prefabricated member assembly 2 is formed by preassembling the well pipe 21, the filter 22, the water stop sheet 23, the reserved grouting pipe 24, the sand filling pipe 25 and the first water stop material layer 26, so that the prefabricated member assembly 2 can be formed by one-time hole forming during the manufacturing of the dewatering well, then the prefabricated member assembly 2 is formed by one-time hole forming, the construction is convenient, and the artificial construction errors caused by uncertain factors of artificial construction procedures can be greatly reduced, thereby ensuring the processing quality of the dewatering well; in addition, during subsequent maintenance, the integrated prefabricated member assembly 2 structure can conveniently perform upper grouting and lower sand filling on the prefabricated member assembly 2, and is convenient for later maintenance.
The first water stopping material layer 26 can expand when meeting water after the prefabricated member assembly 2 enters the hole once, so that the water stopping effect can be effectively ensured, meanwhile, no slurry exists between the filter 22 and the filter material layer 3, the filter material is uniform, and the large water yield can be ensured. The water stopping rubber belt 27 can further improve the water stopping effect of the dewatering well.
The distance between the bottom end of the reserved grouting pipe 24 and the top surface of the first water stop material layer 26 is less than or equal to one third of the length of the first water stop material layer 26.
Also comprises a filter material layer 3, a second water stop material layer 4 and a concrete layer 5. The filter layer 3 fills the well pipe 21 and the borehole 1, the borehole 1 and the filter 22 and the borehole 1 and the sedimentation pipe 28 arranged below the first water stop layer 26. The second water stop layer 4 fills between the well pipe 21 and the borehole 1 arranged above the first water stop layer 26. A concrete layer 5 is arranged between the well pipe 21 and the borehole 1 above the second water stop layer 4.
The first water stop material layer 26 includes a clay sphere layer; the second water-stop material layer 4 includes a water-stop clay layer.
Meanwhile, the filter material layer 3 is filled between the well pipe 21 and the drill hole 1 below the first water stop material layer 26, that is, the first water stop material layer 26 is arranged above the filter material layer 3, and the water stop sheet 23 is further arranged in the first water stop material layer 26, so that sand out of the filter material layer 3 can be effectively prevented.
The preassembled precipitation well disclosed by the embodiment of the invention can ensure the quality of the precipitation well, can furthest improve the water quantity, has a good water stopping effect, a good subsequent repairing and maintaining effect, is extremely small in sand yield and environment-friendly, brings convenience and good influence to subsequent engineering, and is high in speed and good in quality. Meanwhile, the disposable operation is convenient to manage, the quality benefit is high, the auxiliary work is less, and the construction convenience is brought to the follow-up work.
The present invention has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the invention, which is defined by the appended claims.
Claims (9)
1. The preassembled dewatering well is characterized by comprising a drilling hole and a prefabricated member assembly, wherein the prefabricated member assembly is arranged in the drilling hole; the prefabricated member assembly comprises a well pipe, a filter, a sedimentation pipe, a plurality of water stop sheets, a plurality of reserved grouting pipes and a plurality of sand filling pipes, wherein the filter is connected with the well pipe and is positioned at the bottom of the well pipe, and the sedimentation pipe is connected with the bottom of the filter; the water stopping sheets are fixed on the outer wall of the well pipe at intervals and are positioned above the filter; the reserved grouting pipe and the sand filling pipe are respectively arranged on the outer side of the well pipe along the axial direction of the well pipe and fixedly connected with the water stop sheet; the bottom end of the reserved grouting pipe extends into a space between one water stop sheet positioned at the top of each water stop sheet and one water stop sheet positioned at the bottom of each water stop sheet; the bottom end of the sand filling pipe extends into the lower part of each water stopping sheet.
2. The preassembled dewatering well according to claim 1, wherein each water stop sheet is matched to form a sand filling pipe channel, and the sand filling pipe is arranged in the sand filling pipe channel in a penetrating manner and fixedly connected with the water stop sheet; the water stop sheets are arranged at the tops of the water stop sheets to form a reserved grouting pipe through hole, and the reserved grouting pipe is arranged in the reserved grouting pipe through hole in a penetrating mode and fixedly connected with the water stop sheets.
3. The pre-assembled dewatering well according to claim 1 or 2, wherein the pre-assembly further comprises a first layer of water stop material; the first water stopping material layer is coated outside the well pipe and the water stopping sheet and is positioned above the filter.
4. A preassembled dewatering well according to claim 3, characterized in that the outer part of the first water-stopping material layer is covered with a water-stopping rubber belt.
5. The preassembled dewatering well of claim 4, wherein a distance between a bottom end of the preformed grouting pipe and a top surface of the first water stop layer is less than or equal to one third of a length of the first water stop layer.
6. The pre-assembled dewatering well according to claim 5, further comprising a filter layer filling between the well pipe and the borehole, between the borehole and the filter, and between the borehole and the precipitation pipe disposed below the first water stop layer.
7. The preassembled dewatering well according to claim 6, further comprising a second water stop layer filling between the well pipe and the borehole above the first water stop layer.
8. The preassembled dewatering well according to claim 7, further comprising a concrete layer disposed between the well pipe and the borehole above the second water stop layer.
9. The preassembled dewatering well of claim 8 wherein the first water stop layer includes a clay sphere layer; the second water stop material layer comprises a water stop clay layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910221298.1A CN109881692B (en) | 2019-03-22 | 2019-03-22 | Preassembled dewatering well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910221298.1A CN109881692B (en) | 2019-03-22 | 2019-03-22 | Preassembled dewatering well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109881692A CN109881692A (en) | 2019-06-14 |
| CN109881692B true CN109881692B (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910221298.1A Active CN109881692B (en) | 2019-03-22 | 2019-03-22 | Preassembled dewatering well |
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| Country | Link |
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| CN (1) | CN109881692B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409474B (en) * | 2019-08-07 | 2024-03-26 | 中煤第三建设（集团）有限责任公司 | Pipe well dewatering well arranged at bottom of underground diaphragm wall |
| CN111188350A (en) * | 2020-01-21 | 2020-05-22 | 上海勘察设计研究院(集团)有限公司 | Confined water dewatering well structure and dewatering method |
| CN111218949A (en) * | 2020-01-21 | 2020-06-02 | 上海勘察设计研究院(集团)有限公司 | Diving drainage well structure and drainage method |
| CN113833000A (en) * | 2021-09-29 | 2021-12-24 | 天津大学 | Dewatering well device based on expansion material and construction method thereof |
| CN115182369A (en) * | 2022-07-29 | 2022-10-14 | 中交(南京)建设有限公司 | Dewatering well structure and pile foundation construction method reconstructed by utilizing dewatering well |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995013437A1 (en) * | 1993-11-12 | 1995-05-18 | Asahi Denka Kogyo Kabushiki Kaisha | Water expansion cut-off plate |
| CN202809665U (en) * | 2012-07-02 | 2013-03-20 | 上海长凯岩土工程有限公司 | Blocking device for relief well of micro artesian water in foundation pit |
| CN109356181A (en) * | 2018-10-12 | 2019-02-19 | 武汉市市政建设集团有限公司 | A kind of deep basal pit mixing dewatering well for multilayer aquifer system design |
| CN209854751U (en) * | 2019-03-22 | 2019-12-27 | 上海长凯岩土工程有限公司 | Prefabricated precipitation well |
-
2019
- 2019-03-22 CN CN201910221298.1A patent/CN109881692B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995013437A1 (en) * | 1993-11-12 | 1995-05-18 | Asahi Denka Kogyo Kabushiki Kaisha | Water expansion cut-off plate |
| CN202809665U (en) * | 2012-07-02 | 2013-03-20 | 上海长凯岩土工程有限公司 | Blocking device for relief well of micro artesian water in foundation pit |
| CN109356181A (en) * | 2018-10-12 | 2019-02-19 | 武汉市市政建设集团有限公司 | A kind of deep basal pit mixing dewatering well for multilayer aquifer system design |
| CN209854751U (en) * | 2019-03-22 | 2019-12-27 | 上海长凯岩土工程有限公司 | Prefabricated precipitation well |
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| CN109881692A (en) | 2019-06-14 |
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