CN109750684A - A kind of multi-purpose precipitation well construction and preparation method thereof - Google Patents
A kind of multi-purpose precipitation well construction and preparation method thereof Download PDFInfo
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- CN109750684A CN109750684A CN201910162465.XA CN201910162465A CN109750684A CN 109750684 A CN109750684 A CN 109750684A CN 201910162465 A CN201910162465 A CN 201910162465A CN 109750684 A CN109750684 A CN 109750684A
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- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000001556 precipitation Methods 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000004927 clay Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 32
- 230000006837 decompression Effects 0.000 claims abstract description 20
- 239000003566 sealing material Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 239000000284 extract Substances 0.000 claims abstract description 7
- 239000013049 sediment Substances 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 2
- 230000009189 diving Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 241001365789 Oenanthe crocata Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to a kind of multi-purpose precipitation well construction, pipe, decompression well screen are cylindrical in shape relief well in fact, same to diameter, and are sequentially connected from top to bottom, constitute relief well well casing；Pipe, drainage well screen are cylindrical in shape drainage well in fact, same to diameter, and are sequentially connected from top to bottom；Drainage well is managed in fact, the connector of drainage well screen is set in outside relief well reality pipe, and is fixedly connected with relief well reality pipe, and the annulus between relief well well casing constitutes drainage well well casing；In the wellhole opened up, the periphery in drainage well reality tube top portion is equipped with clay, drainage well screen bottom welded seal steel plate group back cover, sealing steel plate group lower part setting layering sealing material, is located at around relief well chimney filter and relief well reality pipe equipped with gravel material, layering sealing material lower part between clay and layering sealing material and is also provided with gravel material；Clay, layering sealing material, gravel material fully support wellhole.The present invention can extract multi-layer Underground Water in one-step pore-creating Cheng Jinghou hierarchical control.
Description
Technical field
The present invention relates to a kind of dewatering wells more particularly to a kind of multi-purpose precipitation well construction and preparation method thereof.
Background technique
At present dewatering well diving be mostly drainage well, artesian water is relief well, diving with pressure-bearing water stratification at times respectively into
Row precipitation；Another kind is that combined shaft diving draws water simultaneously with artesian water.Former approach needs to carry out at well larger workload
Multiple Cheng Jing, the construction period is longer, higher cost；Later approach precipitation is larger especially need to draw water to artesian water in advance, drop
Water, which causes to cheat all surface subsidence, to be affected.
Summary of the invention
The object of the present invention is to provide a kind of multi-purpose precipitation well construction, one-step pore-creating reaches diving and pressure-bearing water stratification point
Period is separately turned on the function of carrying out precipitation, and construction cost is smaller；It is particularly suitable for excavation face and approaches or expose artesian aquifer
Top plate, the biggish engineering project of artesian water precipitation range.
The present invention takes following technical scheme:
A kind of multi-purpose precipitation well construction, including relief well reality pipe 3, drainage well reality pipe 1, drainage well screen 2, decompression well screen
4；The relief well reality pipe 3, decompression well screen 4 are cylindrical in shape, same to diameter, and are sequentially connected from top to bottom, and relief well well casing is constituted；
The drainage well reality pipe 1, drainage well screen 2 are cylindrical in shape, same to diameter, and are sequentially connected from top to bottom；Drainage well reality pipe 1, drainage
The connector of well screen 2 is set in outside relief well reality pipe 3, and is fixedly connected with relief well reality pipe 3, between relief well well casing
Annulus constitute drainage well well casing；In the wellhole opened up, the periphery at 1 top of drainage well reality pipe is equipped with clay 7, dredges
2 bottom welded seal steel plate group of dry-well chimney filter, 6 back cover, 6 lower part of sealing steel plate group setting layering sealing material, clay 7 and layering
It is located at around relief well chimney filter 4 and relief well reality pipe 3 between sealing material equipped with gravel material 8, layering sealing material lower part and also sets
Set gravel material 8；Clay 7, layering sealing material, gravel material 8 fully support the wellhole.
Further, 4 lower end of decompression well screen is also connect with equal diameter sediment tube 5, is also set around sediment tube 5
There is the gravel material 8.
Further, institute's layering sealing material is sealing clay 9.
Further, water pump 10 is equipped in the decompression well screen 4, water pump 10 connects pump line 11, and pump line 11 stretches out upwards
Relief well reality pipe 3.
Further, the drainage well reality pipe 1 and drainage well screen 2 protrude into air inlet 14, outlet pipe 12 from top to bottom,
Air inlet 14 connects outer fan, and outlet pipe 12 is connect with vacuum tube 12, and vacuum tube 12 and the external device for providing negative pressure connect
It connects.
Further, the vacuum tube 12 is also directly connected to the drainage well reality pipe 1.
A kind of production method of above-mentioned multi-purpose precipitation well construction, comprising the following steps: S1, drainage well reality pipe 1 and drainage well
Chimney filter 2 is successively welded according to design length, constitutes the drainage well well casing of outer layer；Drainage well casing caliber is greater than relief well well casing caliber
50mm or more；S2, relief well reality pipe 3, decompression well screen 4 are successively welded with sediment tube 5 according to design length, constitute subtracting for internal layer
Kill-job well casing；S3, the relief well well casing of the drainage well well casing of outer layer and internal layer is fixed every 2-3m, and in drainage well screen 2
6 back cover of tube bottom welded seal steel plate group, assembly welding complete entirely multi-purpose well well casing structure；S4, pore-forming, borehole cleaning, aperture are greater than
The drainage well well casing caliber 100mm or more of outer layer, borehole cleaning put down the multi-purpose well well casing structure after the completion；S5, projected depth is pressed
Gravel material 8 is inserted, gravel material 8 inserts 4m or more sealing clay 9 after being filled above the position of decompression well screen 4；Gravel material 8 is successively filled again
And clay 7, until earth's surface；S6, drainage well well casing and relief well well casing install pumping equipment respectively, be separately turned on as needed into
Capable operation of drawing water.
Further, in step S5, segmentation is stood when filling out gravel material and filling out clay, to one section of gravel material 8,7 completely densified of clay
Shi Fangke carries out the filling of next section of gravel material, clay.
Further, sealing plus vacuum between inside and outside two layers of well casing, are drawn water using vacuum；Or make to be formed in drainage well
Vacuum environment with air compressor machine or is put water in the small small water pump extraction phreatic aquifer of bore, is placed in the relief well well casing of internal layer
Water pump 10 extract artesian aquifer in water, thus from a well difference layering carry out draw water.
Further, air inlet 14 and outlet pipe 13, air inlet 14 and outer fan are installed in drainage well screen 2
Connection, outlet pipe 13 are connect with external vacuum pump.
When the present invention is implemented: the double-deck well casing and chimney filter are set in dewatering well, and internal layer is decompression well construction, and outer layer is drainage
Well construction fills sand and sealing clay according to water-bearing layer position between two layers of well casing, installs Grouting Pipe, clay in the middle part of sealing part
After being backfilled to design thickness half, Grouting Pipe 2 are installed in borehole wall two sides, is symmetrically installed.Slip casting bottom of the tube is in clay backfilling thickness
It spends at half, on grouting tube top to clay backfilling elevation of top face.Clay sealing layer will have certain thickness and intensity.Two
Pass through the same equipment of air compressor machine well-flushing between layer well casing or put the small water pump of bore and extract water in phreatic aquifer, is put in internal layer pipe well
It sets water pump and extracts water in artesian aquifer, carry out purpose of drawing water to reach and can distinguish layering from a well.Shallow-layer drainage
Diving can seal plus vacuum, drawn water using vacuum or drainage well in form vacuum environment, with the same equipment of air compressor machine well-flushing
Or it puts the small water pump of bore and extracts water in phreatic aquifer.
The beneficial effects of the present invention are:
1) multi-layer Underground Water can be extracted in one-step pore-creating Cheng Jinghou hierarchical control.
2) high reliablity；It is ingenious in design.
Detailed description of the invention
Fig. 1 is the schematic diagram of the multi-purpose precipitation well construction of the present invention.
Fig. 2 is A-A ' cross-sectional view in Fig. 1.
Fig. 3 is B-B ' cross-sectional view in Fig. 1.
Fig. 4 is C-C ' cross-sectional view in Fig. 1.
Fig. 5 is D-D ' cross-sectional view in Fig. 1.
Fig. 6 is the partial enlarged view of Fig. 1.
Fig. 7 is another form of implementation of the invention: using more filter structure drainage well schematic diagrames.
Fig. 8 is the manufacturing process schematic diagram of the multi-purpose precipitation well construction of the present invention.
In figure, 1. drainage wells are managed in fact, and 2. drainage well screens, 3. relief wells are managed in fact, 4. decompression well screens, 5. sediments tube, and 6.
7. clay of sealing steel plate, 8. gravel material, 9. sealing clays, 10. water pumps, 11. pump lines, 12. vacuum tubes, 13. outlet pipes, 14. air inlets
Air hose.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific examples.
Referring to Fig. 1-Fig. 8, a kind of multi-purpose precipitation well construction, including relief well reality pipe 3, drainage well reality pipe 1, drainage well screen
2, well screen 4 is depressurized；The relief well reality pipe 3, decompression well screen 4 are cylindrical in shape, same to diameter, and are sequentially connected from top to bottom, structure
At relief well well casing；The drainage well reality pipe 1, drainage well screen 2 are cylindrical in shape, same to diameter, and are sequentially connected from top to bottom；Drainage
Well reality pipe 1, drainage well screen 2 connector be set in outside relief well reality pipe 3, and be fixedly connected, and subtract with relief well reality pipe 3
Annulus between kill-job well casing constitutes drainage well well casing；In the wellhole opened up, the periphery at 1 top of drainage well reality pipe
Equipped with clay 7,2 bottom welded seal steel plate group of drainage well screen, 6 back cover, the setting of 6 lower part of sealing steel plate group is layered sealing material,
Gravel material 8 is equipped between clay 7 and layering sealing material, layering sealing material lower part is located at relief well chimney filter 4 and relief well reality pipe 3
Around be also provided with gravel material 8；Clay 7, layering sealing material, gravel material 8 fully support the wellhole.
In this embodiment, referring to Fig. 1,4 lower end of decompression well screen is also connect with equal diameter sediment tube 5, precipitating
The gravel material 8 also is provided with around pipe 5.
Referring to Fig. 1 and Fig. 7, institute's layering sealing material is sealing clay 9.
Referring to Fig. 1, water pump 10 is equipped in the decompression well screen 4, water pump 10 connects pump line 11, and pump line 11 stretches out upwards to be subtracted
Kill-job reality pipe 3.
Referring to Fig. 1 and Fig. 6, the drainage well reality pipe 1 and drainage well screen 2 protrude into air inlet 14, water outlet from top to bottom
Pipe 12, air inlet 14 connect outer fan, and outlet pipe 12 is connect with vacuum tube 12, the dress of vacuum tube 12 and external offer negative pressure
Set connection.
Referring to Fig. 1 and Fig. 6, the vacuum tube 12 is also directly connected to the drainage well reality pipe 1.
It is detailed in Fig. 8: the production of multi-purpose precipitation well construction, comprising the following steps:
1. drainage well reality pipe 1 is successively welded with drainage well screen 2 according to design length, outer layer drainage well well casing is constituted；For
The guarantee effect drainage well casing diameter that draws water should be greater than relief well caliber 50mm or more.
2. relief well reality pipe 3, decompression well screen 4 are successively welded with sediment tube 5 according to design length, internal layer drainage well is constituted
Well casing；
3. fixing outer layer drainage well well casing and internal layer relief well well casing every 2-3m, and welded in 2 tube bottom of drainage well screen
6 back cover of sealing steel plate group is connect, assembly welding completes entirely multi-purpose well well casing structure；
4. pore-forming, and carry out borehole cleaning.Aperture is greater than outer layer well casing caliber 100mm or more.Downhole pipe after the completion of borehole cleaning；
5. inserting gravel material 8 by projected depth, 4m or more sealing clay 9 is inserted after the completion of the filling of gravel material 8；Gravel is successively filled again
Material 8 and clay 7, until earth's surface.It need to be segmented standing when filling out gravel, next section can be carried out when gravel material (or clay) completely densified and filled out
Gravel (or clay) filling.
6. installing pumping equipment, it is separately turned on carries out operation of drawing water as needed.It can be sealed between two layers of well casing and add vacuum,
Drawn water using vacuum or drainage well in form vacuum environment, with the same equipment of air compressor machine well-flushing or put the small water pump of bore and take out
Take water in phreatic aquifer.Water pump is placed in internal layer pipe well extracts water in artesian aquifer, it can from a well to reach
Difference layering carries out purpose of drawing water.
Fig. 7 is another form of implementation of the invention: using more filter structure drainage wells, drainage well screen 2 and drainage well
The setting of the real interval of pipe 1.
Similarly, for multi-layered aquifer, using three layers or even more layers similar structures well casing, layered clay ball pressurization slurry
Sealing, is layered embedded filter, and observation draws water or recharge etc..
For multilayer soil layer, rock stratum etc., using multilayer similar structures well casing, shape is not limited to circle, and material is not limited to steel
Pipe, is layered sealing material and mode is not limited to clay ball pressurization slurry sealing, is layered embedded Multi-channel filtering device, observation, layering
Recharge etc. is drawn water or be layered, can carry out, can also implement step by step according to plan simultaneously.And so on, it is more also to can achieve a well
Purpose.
It is the preferred embodiment of the present invention above, those of ordinary skill in the art can also carry out various changes on this basis
It changes or improves, under the premise of not departing from the present invention total design, these transformation or improve all should belong to that the present invention claims guarantors
Within the scope of shield.
Claims (10)
1. a kind of multi-purpose precipitation well construction, it is characterised in that:
Including relief well pipe (3), drainage well pipe (1), drainage well screen (2), decompression well screen (4) in fact in fact；
Pipe (3), decompression well screen (4) are cylindrical in shape the relief well in fact, same to diameter, and are sequentially connected from top to bottom, and decompression is constituted
Well well casing；
Pipe (1), drainage well screen (2) are cylindrical in shape the drainage well in fact, same to diameter, and are sequentially connected from top to bottom；Drainage well is real
Pipe (1), drainage well screen (2) connector be set in relief well pipe (3) be external in fact, and pipe (3) is fixedly connected in fact with relief well,
Annulus between relief well well casing constitutes drainage well well casing；
In the wellhole opened up, the periphery that the drainage well manages at the top of (1) in fact is equipped with clay (7), the weldering of drainage well screen (2) bottom
Connect sealing steel plate group (6) back cover, sealing steel plate group (6) lower part setting layering sealing material, clay (7) and layering sealing material it
Between be equipped with gravel material (8), layering sealing material lower part is located at real manage of relief well chimney filter (4) and relief well and is also provided with gravel around (3)
Expect (8)；
Clay (7), layering sealing material, gravel material (8) fully support the wellhole.
2. multi-purpose precipitation well construction as described in claim 1, it is characterised in that: decompression well screen (4) lower end also with phase
Equal diameter sediment tube (5) connects, and also is provided with the gravel material (8) around sediment tube (5).
3. multi-purpose precipitation well construction as described in claim 1, it is characterised in that: the layering sealing material is sealing clay
(9)。
4. multi-purpose precipitation well construction as described in claim 1, it is characterised in that: be equipped with water pump in the decompression well screen (4)
(10), water pump (10) connection pump line (11), pump line (11) stretch out relief well pipe (3) in fact upwards.
5. multi-purpose precipitation well construction as described in claim 1, it is characterised in that: drainage well pipe (1) and the filter of drainage well in fact
Pipe (2) protrudes into air inlet (14), outlet pipe (12) from top to bottom, and air inlet (14) connects outer fan, outlet pipe (12)
It is connect with vacuum tube (12), vacuum tube (12) is connect with the external device for providing negative pressure.
6. multi-purpose precipitation well construction as claimed in claim 4, it is characterised in that: the vacuum tube (12) is also directly dredged with described
Dry-well pipe (1) connection in fact.
7. a kind of production method of precipitation well construction multi-purpose as described in claim 1, which comprises the following steps:
Pipe (1) is successively welded with drainage well screen (2) according to design length in fact for S1, drainage well, constitutes the drainage well well casing of outer layer；
Drainage well casing caliber is greater than relief well well casing caliber 50mm or more；
Pipe (3), decompression well screen (4) are successively welded with sediment tube (5) according to design length in fact for S2, relief well, constitute internal layer
Relief well well casing；
S3, the relief well well casing of the drainage well well casing of outer layer and internal layer is fixed every 2-3m, and in drainage well screen (2) tube bottom
Welded seal steel plate group (6) back cover, assembly welding complete entirely multi-purpose well well casing structure；
S4, pore-forming, borehole cleaning, aperture are greater than the drainage well well casing caliber 100mm or more of outer layer, put down after the completion of borehole cleaning described multi-purpose
Well well casing structure；
S5, gravel material (8) are inserted by projected depth, filling 4m or more stops after gravel material (8) is filled above the position of decompression well screen (4)
Water clay (9)；Gravel material (8) and clay (7) are successively filled again, until earth's surface；
S6, drainage well well casing and relief well well casing install pumping equipment respectively, are separately turned on carry out operation of drawing water as needed.
8. the production method of multi-purpose precipitation well construction as claimed in claim 6, it is characterised in that: in step S5, fill out gravel material and
When filling out clay segmentation is stood, and next section of gravel material can be carried out when one section of gravel material (8), clay (7) completely densified, clay is filled out
It fills.
9. the production method of multi-purpose precipitation well construction as claimed in claim 6, it is characterised in that: close between inside and outside two layers of well casing
Envelope plus vacuum, are drawn water using vacuum；Or make to form vacuum environment in drainage well, with air compressor machine or put the small small water pump pumping of bore
Water in phreatic aquifer is taken, water pump (10) is placed in the relief well well casing of internal layer and extracts water in artesian aquifer, thus from flatly
Difference layering draw water in well.
10. the production method of multi-purpose precipitation well construction as claimed in claim 8, it is characterised in that: peace in drainage well screen (2)
Dress air inlet (14) and outlet pipe (13), air inlet (14) are connect with outer fan, outlet pipe (13) and external vacuum pump
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910162465.XA CN109750684B (en) | 2019-03-05 | 2019-03-05 | Multipurpose dewatering well structure and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910162465.XA CN109750684B (en) | 2019-03-05 | 2019-03-05 | Multipurpose dewatering well structure and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN109750684A true CN109750684A (en) | 2019-05-14 |
| CN109750684B CN109750684B (en) | 2024-03-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983428A (en) * | 2021-02-20 | 2021-06-18 | 上海市政工程设计研究总院（集团）有限公司 | Method for building underground water environment monitoring well |
| CN115305901A (en) * | 2022-08-16 | 2022-11-08 | 中交第四公路工程局有限公司 | Directional recharge and emergency pumping well |
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| CN102518141A (en) * | 2011-12-19 | 2012-06-27 | 同济大学 | Deep foundation pit dewatering and decompressing combination well controlled in subsection manner |
| JP2012241383A (en) * | 2011-05-18 | 2012-12-10 | Penta Ocean Construction Co Ltd | Ground improvement method and decompression container |
| CN202809629U (en) * | 2012-08-29 | 2013-03-20 | 上海长凯岩土工程有限公司 | Pressure-reduction and dewatering supplementary well completion structure in disturbance stratum inside foundation pit |
| CN107489159A (en) * | 2017-08-03 | 2017-12-19 | 中国电建集团铁路建设有限公司 | Deep ＆ thick silt matter Soft Soil Layer vacuum tube well dewatering construction structure and its construction |
| CN210140838U (en) * | 2019-03-05 | 2020-03-13 | 上海长凯岩土工程有限公司 | Multi-purpose precipitation well structure |
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2019
- 2019-03-05 CN CN201910162465.XA patent/CN109750684B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012241383A (en) * | 2011-05-18 | 2012-12-10 | Penta Ocean Construction Co Ltd | Ground improvement method and decompression container |
| CN102518141A (en) * | 2011-12-19 | 2012-06-27 | 同济大学 | Deep foundation pit dewatering and decompressing combination well controlled in subsection manner |
| CN202809629U (en) * | 2012-08-29 | 2013-03-20 | 上海长凯岩土工程有限公司 | Pressure-reduction and dewatering supplementary well completion structure in disturbance stratum inside foundation pit |
| CN107489159A (en) * | 2017-08-03 | 2017-12-19 | 中国电建集团铁路建设有限公司 | Deep ＆ thick silt matter Soft Soil Layer vacuum tube well dewatering construction structure and its construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112983428A (en) * | 2021-02-20 | 2021-06-18 | 上海市政工程设计研究总院（集团）有限公司 | Method for building underground water environment monitoring well |
| CN112983428B (en) * | 2021-02-20 | 2023-03-14 | 上海市政工程设计研究总院（集团）有限公司 | Method for building underground water environment monitoring well |
| CN115305901A (en) * | 2022-08-16 | 2022-11-08 | 中交第四公路工程局有限公司 | Directional recharge and emergency pumping well |
| CN115305901B (en) * | 2022-08-16 | 2024-05-28 | 中交第四公路工程局有限公司 | Directional recharging and emergency pumping well |
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| CN109750684B (en) | 2024-03-26 |
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