CN208023598U - A kind of base pit dewatering pipe well - Google Patents
A kind of base pit dewatering pipe well Download PDFInfo
- Publication number
- CN208023598U CN208023598U CN201820434718.5U CN201820434718U CN208023598U CN 208023598 U CN208023598 U CN 208023598U CN 201820434718 U CN201820434718 U CN 201820434718U CN 208023598 U CN208023598 U CN 208023598U
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- Prior art keywords
- water
- well
- pipe
- dewatering
- filtering
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- Expired - Fee Related
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model belongs to base pit dewatering technical field of construction, and in particular to a kind of base pit dewatering pipe well.Including being arranged in water-filtering well tube earth's surface dewatering well below and be arranged in dewatering well, the water-filtering well tube middle and lower part is equipped with wire netting and reinforcing bar iron hoop successively, wire netting and reinforcing bar iron hoop are respectively welded on water-filtering well tube skeleton, water-filtering well tube lower end nozzle is connected with sand sediment pipe, and sand setting nozzle is sealed with stopper；Lifting pipe is equipped in the water-filtering well tube, the upper end tube nozzle of lifting pipe is connect with pumping equipment by suction hose, for groundwater abstraction and discharged.The utility model structure can improve soil solidifying degree, increase foundation soil shearing.Lowering of watertable reduces water content of soil, to improve soil solidifying degree, reduces native Pore Pressure, increases effective stress in soil, corresponding soil shear strength is enhanced.
Description
Technical field
The utility model belongs to base pit dewatering technical field of construction, and in particular to a kind of base pit dewatering pipe well.
Background technology
In construction of hydro project, when basis takes face formula to excavate, foundation pit bottom surface is often below level of ground water, due to foundation pit
Draining makes the balance of underground water be destroyed, and under the action of groundwater seepage pressure, underground water burst or more serious stream often occurs
Sand phenomenon.In this case, not only digging deep placement work in foundation pit bottom surface can not continue, and the sand of crater wall can be by underground water band
Enter in hole, so that neighbouring ground is collapsed, the bearing capacity of ground can be reduced in this way.To ensure construction quality and construction safety,
Ensure dry to carry out always during excavation of foundation pit and foundation construction, manual method lowering of watertable need to be used, i.e., in base
Some pipe wells, while groundwater abstraction are laid around hole, so that level of ground water is dropped to excavation foundation bottom surface hereinafter, and remaining ground
Lower water level is less than foundation construction bottom surface, until foundation construction backfill finishes.
The method of artificial dewatering can not only prevent the generation of quicksand phenomenon, improve working conditions, and due to
After moisture excludes in soil, flowing pressure is reduced or eliminated, and slope construction can be put suddenly, reduce excavation quantities.Additionally due to seepage flow to
Under, flowing pressure effect strengthens gravity, increases pressure between soil particle, keeps bottom of foundation ditch soil layer more closely knit, to increase
Foundation capability.
The method of artificial dewatering divides tube well method and well-point method, tube well method lowering of watertable by drainage principle
When, arrange a series of pipe wells around foundation pit, be put into pipe well water pump suction pipe or directly by water pump into the water, underground water is in weight
It is taken away by water pump in access wall under force effect.Infiltration coefficient in water-bearing layer is big, when underground water is than more rich area construction, preferably
Using pipe well points lowering of watertable, pipe well points are also known as heavy caliber well point, it has displacement big, and effect of drawing water is good,
Construct the features such as well point is few, and each well point is mutual indepedent, easy for construction, and engineering cost is low, is passed through in artificial dewatering
Frequently with dewatering mode.
Since precipitation can be such that interstitial hydraulic pressure reduces, the soil body will not be made to occur to squeeze out destruction, not when being aided with precompressed preloading
Rate of loading need to be controlled, can a precipitation to designed elevation, accelerate soil solidifying.The disadvantage is that a set of special equipment is needed,
Precipitation Process needs personal management and repair, and precipitation reinforces handled water and belongs to diving mostly, if the lower end of well reaches artesian water
Layer, then not only pump-out can greatly increase, and make decline of the phreatic table unobvious sometimes, and the purpose of design is not achieved.
Utility model content
To solve the above-mentioned problems in the prior art, the utility model provides a kind of base pit dewatering pipe well.
The technical solution of the utility model is as follows：
A kind of base pit dewatering pipe well, including be arranged in water filter well earth's surface dewatering well below and be arranged in dewatering well
Pipe, the water-filtering well tube middle and lower part are equipped with wire netting and reinforcing bar iron hoop successively, and wire netting and reinforcing bar iron hoop are respectively welded at drainage
On well casing skeleton, water-filtering well tube lower end nozzle is connected with sand sediment pipe, and sand setting nozzle is sealed with stopper；It is equipped in the water-filtering well tube
The upper end tube nozzle of lifting pipe, lifting pipe is connect by suction hose with pumping equipment, for groundwater abstraction and is discharged.
Further, grittiness is filled in the dewatering well, there are drillings inside gravel.
Further, between the water-filtering well tube top and dewatering well clay closure is filled out by ramming.
Further, the water-filtering well tube nozzle is higher than Earth surface plane.
Compared with prior art, the utility model has following excellent technique effect：
(1) infiltration of its foundation pit slope surface and substrate is prevented, ensures the drying of hole bottom, is convenient for construction and excavation；
(2) increase side slope and cheat the stability at bottom, prevent side slope or cheat the soil layer particle loss at bottom, prevent quicksand from generating；
(3) water content of soil is reduced, soil body physical and mechanical property indexs are effectively improved；
(4) soil solidifying degree is improved, foundation soil shearing is increased.Lowering of watertable reduces water content of soil, from
And soil solidifying degree is improved, native Pore Pressure is reduced, effective stress in soil is increased, corresponding soil shear strength obtains
Enhancing；
(5) lower part artesian water head is reduced, artesian head is reduced to the jacking force of base plate of foundation pit, prevents Foundation Pit Pouring.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Reference numeral is as shown in the figure：1. dewatering well, 2. water-filtering well tubes, 3. wire nettings, 4. reinforcing bar iron hoops, 5. sand sediment pipes,
6. stopper, 7. lifting pipes, 8. suction hoses, 9. pumping equipments, 10. gravels, 11. drillings, 12. rammers fill out clay.
Specific implementation mode
The utility model is further explained below in conjunction with drawings and examples：
Embodiment 1
A kind of base pit dewatering pipe well, including be arranged in the earth's surface water filter well below dewatering well 1 and be arranged in dewatering well 1
Pipe 2.
2 middle and lower part of the water-filtering well tube is equipped with wire netting 3 and reinforcing bar iron hoop 4 successively, and wire netting 3 and reinforcing bar iron hoop 4 are distinguished
It is welded on 2 skeleton of water-filtering well tube, 2 lower end nozzle of water-filtering well tube is connected with sand sediment pipe 5, and 5 mouthfuls of sand sediment pipe is sealed with stopper 6；Institute
It states and is equipped with lifting pipe 7 in water-filtering well tube 2, the upper end tube nozzle of lifting pipe 7 is connect by suction hose 8 with pumping equipment 9, for extracting
Underground water simultaneously discharges.
Fill grittiness 10 in the dewatering well 1, there are drillings 11 inside gravel 10.
Between 2 top of the water-filtering well tube and dewatering well 1 closure of clay 12 is filled out by ramming.
2 nozzle of the water-filtering well tube is higher than Earth surface plane.
Technological process is as follows：
1 positioning of dewatering well → drilling, borehole cleaning → hangs water-filtering well tube 2 → backfill gravel 10, well-flushing → installation deep-well precipitation
Device → debugging → pre- precipitation → with shoveling process → merogenesis remove well casing (pressing actual conditions) → precipitation under cheating 1.0M →
Concrete bed course pours smash after remove extra well casing, shut-in well (shut-in well work be gradually completing with structure construction) → withdraw from the arena.
Well head：2 nozzle of water-filtering well tube should be higher than that 0.5 meter of ground or more, general to use to prevent surface waste water from penetrating into well
Tonerde or cement mortar closing, depth are not less than 2.00 meters.
Wall casing：The wall casing of water-filtering well tube 2 and sand sediment pipe 5 is all made of bellows, and wall casing diameter of phi 273mm is (interior
Diameter).
Water-filtering well tube 2：Using circular hole filter pipe, filter pipe outsourcing wire netting 3 and reinforcing bar iron hoop 4.
Sand sediment pipe 5：Sand sediment pipe 5 primarily serves water-filtering well tube 2, and sand setting does not block and influences the effect of water inlet in reason well, sinks
Sandpipe 5 is connected on 2 bottom of water-filtering well tube, and diameter is identical as water-filtering well tube 2, and length is 1 meter, and 5 base opening of sand sediment pipe is sealed with stopper.
Fill out filtrate：2.00 meters of earth's surface or less is upwardly by shaft bottom and encloses back-up sand gravel 10.
Fill out cohesive soil sealing of hole：
It is filled to earth's surface in the face of filling out or more of enclosing of gravel 10 and tamps using ramming to fill out clay 12 and enclose, and carry out the envelope outside well head pipe
Close work.
The foregoing is merely the preferred embodiment in the utility model, are not intended to limit the utility model, for ability
For the technical staff in domain, various modifications and changes may be made to the present invention.It is all the spirit and principles of the utility model it
Interior, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of base pit dewatering pipe well, which is characterized in that in earth's surface dewatering well below (1) and be arranged in dewatering well including setting
(1) water-filtering well tube (2) in, water-filtering well tube (2) middle and lower part are equipped with wire netting (3) and reinforcing bar iron hoop (4), wire netting successively
(3) it is respectively welded on water-filtering well tube (2) skeleton with reinforcing bar iron hoop (4), water-filtering well tube (2) lower end nozzle is connected with sand sediment pipe
(5), sand sediment pipe (5) mouth is sealed with stopper (6)；Lifting pipe (7), the upper pipes of lifting pipe (7) are equipped in the water-filtering well tube (2)
Mouth is connect by suction hose (8) with pumping equipment (9), for groundwater abstraction and is discharged.
2. base pit dewatering pipe well according to claim 1, which is characterized in that fill grittiness in the dewatering well (1)
(10), there are drilling (11) for gravel (10) inside.
3. base pit dewatering pipe well according to claim 1, which is characterized in that water-filtering well tube (2) top and dewatering well
(1) between clay (12) closure is filled out by ramming.
4. base pit dewatering pipe well according to claim 3, which is characterized in that water-filtering well tube (2) nozzle is higher than earth's surface
Plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820434718.5U CN208023598U (en) | 2018-03-28 | 2018-03-28 | A kind of base pit dewatering pipe well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820434718.5U CN208023598U (en) | 2018-03-28 | 2018-03-28 | A kind of base pit dewatering pipe well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208023598U true CN208023598U (en) | 2018-10-30 |
Family
ID=63908702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820434718.5U Expired - Fee Related CN208023598U (en) | 2018-03-28 | 2018-03-28 | A kind of base pit dewatering pipe well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208023598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130375A (en) * | 2019-04-30 | 2019-08-16 | 江苏楼翔建设有限公司 | A kind of base pit dewatering device |
| CN111119310A (en) * | 2020-02-14 | 2020-05-08 | 中国铁路设计集团有限公司 | Waste water lifting device |
-
2018
- 2018-03-28 CN CN201820434718.5U patent/CN208023598U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130375A (en) * | 2019-04-30 | 2019-08-16 | 江苏楼翔建设有限公司 | A kind of base pit dewatering device |
| CN111119310A (en) * | 2020-02-14 | 2020-05-08 | 中国铁路设计集团有限公司 | Waste water lifting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181030 Termination date: 20190328 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |