CN206706792U - Deep foundation pit precipitation well construction - Google Patents
Deep foundation pit precipitation well construction Download PDFInfo
- Publication number
- CN206706792U CN206706792U CN201720467394.0U CN201720467394U CN206706792U CN 206706792 U CN206706792 U CN 206706792U CN 201720467394 U CN201720467394 U CN 201720467394U CN 206706792 U CN206706792 U CN 206706792U
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- CN
- China
- Prior art keywords
- precast concrete
- well casing
- metalling
- steel pipe
- concrete well
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000001556 precipitation Methods 0.000 title claims abstract description 17
- 239000011178 precast concrete Substances 0.000 claims abstract description 34
- 239000002245 particle Substances 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000004567 concrete Substances 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000013049 sediment Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 11
- 239000011241 protective layer Substances 0.000 claims description 11
- 239000002689 soil Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims 2
- 238000005345 coagulation Methods 0.000 claims 2
- 230000001681 protective effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012279 drainage procedure Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Base pit dewatering civil engineering field of engineering technology is the utility model is related to, more particularly, to a kind of deep foundation pit precipitation well construction.Including precast concrete well casing and foundation ditch basis, precast concrete well casing is located in foundation ditch basis, filled out between precast concrete well casing outer wall and foundation ditch basis provided with filter material layer, precast concrete well casing bottom is provided with well seat, sediment tube is provided with above the well seat, sediment tube is located in precast concrete well casing, sediment tube has been sequentially arranged above bulky grain metalling, middle particle metalling, little particle metalling and water filtering tank, steel pipe is arranged with above precast concrete well casing, inner cylinder is fixed with steel pipe bottom inwall, it is intraoral that inner cylinder gos deep into precast concrete well casing, the inner hole wall top of steel pipe is provided with retainer ring, the anti-hydrofoil ring of steel pipe external welding more than precast concrete well casing, foundation ditch basis top is provided with the blinding concrete concordant with the precast concrete well casing mouth of pipe.
Description
Technical field
Base pit dewatering civil engineering field of engineering technology is the utility model is related to, more particularly, to a kind of deep foundation pit precipitation well knot
Structure.
Background technology
Base pit dewatering mainly includes two methods of catch pit precipitation method and well-point dewatering method, and wherein well-point dewatering method has
Displacement is big, precipitation is deep (15~50m), the features such as not limited by soil property, and suitable for rich groundwater, foundation ditch is deep (＞ 10m),
The big engineering lowering level of ground water of foundation ditch floor space.Well-point dewatering method is before excavation of foundation pit, in foundation ditch surrounding construction certain amount
Dewatering well, in the lower weld filter pipe (well) of dewatering well, the underground water in well is extracted out using pumping equipment, makes to be dug
The soil method that remains drying regime, its main flow is：Well point measurement and positioning -- dig a well mouth -- Hospice Center cylinder rig is just
-- drilling -- changes mud --- hanging installation well casing, filter pipe (the well) --- gravel of backfill filter pipe (well) between hole wall for position
--- well-flushing --- water pump, installation pumping control circuit are divided into well casing --- tries the normal work of dewatering well of drawing water to filter layer
Make --- precipitation, which finishes, pulls out well casing --- shut-in well.
Problems be present in well-points dewatering：
1）Because the water of dewatering well is mixed with impurity and mud, when being drawn water by water pump, usually there is impurity
The situation of water pump is blocked with mud, so as to have influence on drainage procedure；
2）After water pump stops dewatering operation in dewatering well, because underground water hydraulic pressure acts on, if not complete in a short time
Water burst phenomenon will occur into plugging dewatering well, so as to influence the closure quality of dewatering well, cause later stage structure base slab seepage, transport
Row order section station internal water accumulation phenomenon, reduce structure durability the problems such as.
The content of the invention
The purpose of this utility model is to provide a kind of deep foundation pit precipitation well construction, is easy to block, can effectively avoid impurity and
Mud blocks water pump, so as to improve the drainage efficiency in work progress.
The purpose of this utility model is realized in the following manner：Deep foundation pit precipitation well construction, including precast concrete well
Pipe and foundation ditch basis, precast concrete well casing are located in foundation ditch basis, filled out between precast concrete well casing outer wall and foundation ditch basis
Provided with filter material layer, precast concrete well casing bottom is provided with well seat, sediment tube is provided with above the well seat, sediment tube is positioned at pre-
In concrete well processed, sediment tube has been sequentially arranged above bulky grain metalling, middle particle metalling, little particle metalling and filter
Water tank, precast concrete well casing top are arranged with steel pipe, inner cylinder are fixed with steel pipe bottom inwall, inner cylinder gos deep into precast concrete
Well casing is intraoral, and the inner hole wall top of steel pipe is provided with retainer ring, the anti-hydrofoil ring of steel pipe external welding more than precast concrete well casing,
Foundation ditch basis top is provided with the blinding concrete concordant with the precast concrete well casing mouth of pipe, is provided with above blinding concrete thin
Stone concrete protective layer, pea gravel concreten protective layer top are equipped with splash guard, water-proof putty, waterproof are provided with above splash guard
Base concrete is poured above putty, anti-hydrofoil ring is in base concrete.
The filter material layer uses particle diameter 2~5mm medium coarse sands.
The thickness of the pea gravel concreten protective layer is 100mm, and the thickness of base concrete is 500~600mm.
The pea gravel concreten protective layer is the concrete that maximum size of coarse aggregate is not more than 15mm.
The anti-hydrofoil ring, which uses, is more than the thick steel plate making of 6mm.
The steel pipe is hot rolled seamless steel tube.
The bulky grain metalling uses particle diameter 10~20mm cobbles, and thickness is not less than 60cm, and middle particle metalling uses
Particle diameter 4~10mm coarse sands, thickness are not less than 50cm, and little particle metalling uses particle diameter 1~3mm fine sands, and thickness is not less than 30cm.
The beneficial effects of the utility model are：Drainage layer is set and on sediment tube in the surrounding of precast concrete well casing
Side is disposed with bulky grain metalling, middle particle metalling, little particle metalling and water filtering tank, can prevent from containing sand in well water
The exceeded a large amount of losses for being impacted to drainage system, effectively reducing grogs are measured, reduce labor intensity, it is possible to increase construction effect
Rate, save construction cost；Later stage plugging construction is easy, and operating personnel are not required to carry out professional training, and common laborer can complete.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in figure 1, deep foundation pit precipitation well construction, including precast concrete well casing 20 and foundation ditch basis 12, concrete
Native well casing 20 is located in foundation ditch basis 12, is filled out between the outer wall of precast concrete well casing 20 and foundation ditch basis 12 provided with filter material layer 19,
Filter material layer 19 uses particle diameter 2~5mm medium coarse sands, and the bottom of precast concrete well casing 2 is provided with well seat 18, and the top of well seat 18 is provided with
Sediment tube 10, sediment tube 10 are located in precast concrete well casing 20, and the top of sediment tube 10 is disposed with bulky grain from bottom to top
Metalling 17, middle particle metalling 16, little particle metalling 15 and water filtering tank 3, suction pump 5 be arranged on the top of water filtering tank 3 and with
Drinking-water pipe 4 connects, and bulky grain metalling 17 uses particle diameter 10~20mm cobbles, and thickness is not less than 60cm, middle particle metalling 16
Using particle diameter 4~10mm coarse sands, thickness is not less than 50cm, and little particle metalling 15 is not small using particle diameter 1~3mm fine sands, thickness
In 30cm, the top of precast concrete well casing 20 is arranged with steel pipe 2, and steel pipe 2 is hot rolled seamless steel tube, is consolidated in the bottom interior wall of steel pipe 2
Surely there is an inner cylinder 11, inner cylinder 11 gos deep into that precast concrete well casing 20 is intraoral, and the inner hole wall top of steel pipe 2 is provided with retainer ring 6, prefabricated
The anti-hydrofoil ring 8 of the external welding of steel pipe 2 of concrete well more than 20, anti-hydrofoil ring 8 are made using the thick steel plates of 6mm are more than, foundation ditch
The top of basis 12 is provided with the blinding concrete 13 concordant with the mouth of pipe of precast concrete well casing 20, and the top of blinding concrete 13 is set
There is pea gravel concreten protective layer 14, pea gravel concreten protective layer 14 is the concrete that maximum size of coarse aggregate is not more than 15mm, carefully
The thickness of stone concrete protective layer 14 is 100mm, and the top of pea gravel concreten protective layer 14 is equipped with splash guard 9, the top of splash guard 9
Water-proof putty 1 is provided with, the top of water-proof putty 1 has poured base concrete 7, and the thickness of base concrete is 500~600mm,
Anti- hydrofoil ring 8 is in base concrete 7.
After the completion of drawing water, suction pump 5 is proposed, first a shrouding is fixed on inner cylinder 11, casting concrete to retainer ring 6
Place, then another shrouding and retainer ring 6 are fixed, casting concrete is concordant to the mouth of pipe of steel pipe 2, finally consolidates ring flange and steel pipe 2
It is fixed, casting concrete.
Drainage layer is set in the surrounding of precast concrete well casing and has been sequentially arranged above bulky grain rubble in sediment tube
Layer, middle particle metalling, little particle metalling and water filtering tank, it can prevent in well water that sand content is exceeded and shadow is caused to drainage system
Ring, effectively reduce a large amount of losses of grogs, reduce labor intensity, it is possible to increase efficiency of construction, save construction cost；Later stage seals
Stifled easy construction, operating personnel are not required to carry out professional training, and common laborer can complete.
Claims (7)
1. deep foundation pit precipitation well construction, including precast concrete well casing and foundation ditch basis, precast concrete well casing are located at foundation ditch base
In plinth, filled out between precast concrete well casing outer wall and foundation ditch basis and filter material layer, precast concrete well casing bottom are provided with well
Seat, it is characterised in that：Sediment tube is provided with above the well seat, sediment tube is located in precast concrete well casing, above sediment tube
It is disposed with bulky grain metalling, middle particle metalling, little particle metalling and water filtering tank, square set on precast concrete well casing
Provided with steel pipe, inner cylinder is fixed with steel pipe bottom inwall, inner cylinder gos deep into that precast concrete well casing is intraoral, the inner hole wall top of steel pipe
Be provided with retainer ring, the anti-hydrofoil ring of steel pipe external welding more than precast concrete well casing, foundation ditch basis top be provided with it is prefabricated
The concordant blinding concrete of the concrete well mouth of pipe, blinding concrete top are provided with pea gravel concreten protective layer, microlith coagulation
Splash guard is equipped with above protective soil layer, water-proof putty is provided with above splash guard, basic coagulation has been poured above water-proof putty
Soil, anti-hydrofoil ring are in base concrete.
2. deep foundation pit precipitation well construction according to claim 1, it is characterised in that：The filter material layer uses 2 ~ 5mm of particle diameter
Medium coarse sand.
3. deep foundation pit precipitation well construction according to claim 1, it is characterised in that：The thickness of the pea gravel concreten protective layer
Spend for 100mm, the thickness of base concrete is 500~600mm.
4. deep foundation pit precipitation well construction according to claim 1, it is characterised in that：The pea gravel concreten protective layer is thick
Maximum aggregate size is not more than 15mm concrete.
5. deep foundation pit precipitation well construction according to claim 1, it is characterised in that：The anti-hydrofoil ring, which uses, is more than 6mm
Thick steel plate makes.
6. deep foundation pit precipitation well construction according to claim 1, it is characterised in that：The steel pipe is hot rolled seamless steel tube.
7. deep foundation pit precipitation well construction according to claim 1, it is characterised in that：The bulky grain metalling uses particle diameter
10 ~ 20mm cobbles, thickness are not less than 60cm, and middle particle metalling uses particle diameter 4 ~ 10mm coarse sands, and thickness is not less than 50cm, small
Grain metalling uses particle diameter 1 ~ 3mm fine sands, and thickness is not less than 30cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720467394.0U CN206706792U (en) | 2017-04-28 | 2017-04-28 | Deep foundation pit precipitation well construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720467394.0U CN206706792U (en) | 2017-04-28 | 2017-04-28 | Deep foundation pit precipitation well construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206706792U true CN206706792U (en) | 2017-12-05 |
Family
ID=60459398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720467394.0U Expired - Fee Related CN206706792U (en) | 2017-04-28 | 2017-04-28 | Deep foundation pit precipitation well construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206706792U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350191A (en) * | 2020-03-04 | 2020-06-30 | 中交第三航务工程勘察设计院有限公司 | Bucket type foundation structure pumping system and construction process thereof |
| CN111456056A (en) * | 2020-04-29 | 2020-07-28 | 中冶建工集团有限公司 | Construction method of dewatering well in deep foundation pit |
| CN111456054A (en) * | 2020-04-14 | 2020-07-28 | 山东大学 | Pipe well structure suitable for high-permeability alluvial stratum, precipitation construction system and precipitation construction method |
| CN113106995A (en) * | 2021-04-10 | 2021-07-13 | 上海友海建设工程有限公司 | Strong drainage system of ultra-large deep foundation pit and construction method thereof |
| CN113668585A (en) * | 2021-09-03 | 2021-11-19 | 中建安装集团南京建设有限公司 | Open caisson structure for deep and large water intaking in high-pressure water area and construction method |
| CN114263201A (en) * | 2021-12-23 | 2022-04-01 | 中建八局第二建设有限公司 | Finished product self-flowing dewatering deep well pipe and construction method thereof |
-
2017
- 2017-04-28 CN CN201720467394.0U patent/CN206706792U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350191A (en) * | 2020-03-04 | 2020-06-30 | 中交第三航务工程勘察设计院有限公司 | Bucket type foundation structure pumping system and construction process thereof |
| CN111350191B (en) * | 2020-03-04 | 2021-08-31 | 中交第三航务工程勘察设计院有限公司 | Bucket type foundation structure pumping system and construction process thereof |
| CN111456054A (en) * | 2020-04-14 | 2020-07-28 | 山东大学 | Pipe well structure suitable for high-permeability alluvial stratum, precipitation construction system and precipitation construction method |
| CN111456054B (en) * | 2020-04-14 | 2021-04-30 | 山东大学 | Pipe well structure suitable for high-permeability alluvial stratum, precipitation construction system and precipitation construction method |
| CN111456056A (en) * | 2020-04-29 | 2020-07-28 | 中冶建工集团有限公司 | Construction method of dewatering well in deep foundation pit |
| CN113106995A (en) * | 2021-04-10 | 2021-07-13 | 上海友海建设工程有限公司 | Strong drainage system of ultra-large deep foundation pit and construction method thereof |
| CN113668585A (en) * | 2021-09-03 | 2021-11-19 | 中建安装集团南京建设有限公司 | Open caisson structure for deep and large water intaking in high-pressure water area and construction method |
| CN114263201A (en) * | 2021-12-23 | 2022-04-01 | 中建八局第二建设有限公司 | Finished product self-flowing dewatering deep well pipe and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450046 6 floor, 3 East International Plaza, 85 Jinshui East Road, Zheng Dong New District, Zhengzhou, Henan. Patentee after: Gaochuang Industrial Co.,Ltd. Address before: 450046 6 floor, 3 East International Plaza, 85 Jinshui East Road, Zheng Dong New District, Zhengzhou, Henan. Patentee before: GAOCHUANG CONSTRUCTION Corp.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |