CN105064383B - Pipe-inserting negative pressure air jet deep-well dewatering device - Google Patents
Pipe-inserting negative pressure air jet deep-well dewatering device Download PDFInfo
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- CN105064383B CN105064383B CN201510532006.8A CN201510532006A CN105064383B CN 105064383 B CN105064383 B CN 105064383B CN 201510532006 A CN201510532006 A CN 201510532006A CN 105064383 B CN105064383 B CN 105064383B
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Abstract
The invention discloses a pipe-inserting negative pressure air jet deep-well dewatering device. The pipe-inserting negative pressure air jet deep-well dewatering device comprises a negative pressure system, a positive pressure system and a deep well structure, wherein the negative pressure system is provided with a vacuum sub water pipe; the positive pressure system is provided with a sub air pipe; the deep well structure consists of a sand well, a filter pipe and a clay wellhead; the sub air pipe of the positive pressure system penetrates through the connector of the vacuum sub water pipe of the negative pressure system and extends into the vacuum sub water pipe; the vacuum sub water pipe is connected with the filter pipe; and at least one connector is arranged on the vacuum sub water pipe. According to the pipe-inserting negative pressure air jet deep-well dewatering device disclosed by the invention, the deep well structure consisting of the sand well, the filter pipe and the clay wellhead is adopted, and a well pipe is omitted, so that the layered dewatering and excavating of a deep foundation pit are facilitated; normal operation of an excavator is not affected; and the pipe-inserting negative pressure air jet deep-well dewatering device has the advantages of high working efficiency, easy construction and good dewatering effect.
Description
Technical field
The present invention relates to civil engineering base pit dewatering technical field, is more than ten meters for precipitation depth
Foundation ditch, a kind of especially cannula type negative pressure air jet deep-well precipitation device.
Background technology
Deep pit digging is the important operational procedure of modern heavy construction underground structure, and in foundation ditch, lowering of watertable is also
Claim Groundwater Control, i.e., will come meet supporting construction and foundation ditch excavation and construction with lowering of watertable in Foundation Pit Construction
Ask, the level of ground water of construction environment is higher, the depth of foundation requirement is deeper, its difficulty of construction is bigger.
Prior art implements base pit dewatering by precipitation well point is provided with foundation ditch, is to beat a bite deep-well first, in depth
Arrange and the isometric well casing of well depth in well, gravel is filled between the outer wall of the inwall and well casing of deep-well and constitutes sand drain, in well casing
Upper setting well lid, and the air of the vacuum distributive pipe and positive pressure system of negative pressure system is in charge of enforcement is worn to well casing by well lid
Precipitation.The problem of presence is carried out as the earth excavation of deep basal pit is all layered, i.e., before every layer of earth excavation, will
Phreatic table in the floor height foundation ditch drops to this layer by layer below the absolute altitude at bottom, implements earth excavation by excavator, due to many in foundation ditch
Place is provided with precipitation well point, hinders the normal operation of excavator, and well casing is overwhelmed, miscued by excavator, or well casing is dug what is broken
Phenomenon occurs repeatedly, and causes precipitation well point to be scrapped, and not yet completes due to being layered the deep pit digging that carries out, and base pit dewatering need to also be after
It is continuous to carry out, can only be in complement deep-well in foundation ditch, in foundation ditch, secondary setting precipitation well point, causes the wave of human and material resources and time
Take.
The content of the invention
The purpose of the present invention be for the deficiencies in the prior art and provide cannula type negative pressure air jet deep-well precipitation dress
Put, the present invention eliminates well casing, beneficial to the layering of deep basal pit using the deep-well structure being made up of sand drain, chimney filter and clay well head
Precipitation and excavation, do not affect the normal operation of excavator, and with high working efficiency, construction is easy, the good advantage of dewatering effect.
The concrete technical scheme for realizing the object of the invention is：
A kind of cannula type negative pressure air jet deep-well precipitation device, its feature include negative pressure system, positive pressure system and deep-well
Structure, the negative pressure system are made up of vacuum pump, drain pipe, vacuum water-main, vacuum distributive pipe and standby vacuum distributive pipe, are born
The drain pipe of pressure system, vacuum water-main are connected to the two ends of vacuum pump, one end and the vacuum water-main of vacuum distributive pipe
Connection, at least provided with a joint on the pipe shaft of vacuum distributive pipe, joint is provided with aperture；
The positive pressure system is in charge of by air compressor machine, air header, air, switch valve and valve are constituted, the sky of positive pressure system
Press is connected with air header, and air header is in charge of with air and is connected, and switch valve is located between air header and air be in charge of, gas
The other end that mouth is in charge of located at air；
The deep-well structure is made up of sand drain, chimney filter and clay well head, and chimney filter is buried in sand drain, and clay well head is located at sand
The top of well and by sand drain with ground off-balancesheet space sealing；
The air of the positive pressure system is in charge of Jing valves through the aperture on the vacuum distributive pipe joint of negative pressure system and is stretched
Enter in vacuum distributive pipe；Vacuum distributive pipe together with air be in charge of through deep-well structure clay well head and with sand drain in chimney filter
Connection, and at least one joint is located at clay well head ground off-balancesheet on vacuum distributive pipe；
Described standby vacuum distributive pipe one end is provided with joint, and standby vacuum distributive pipe is buried in sand drain together with joint and another
One end is connected with chimney filter.
Described joint is the tube wall insertion of tubulose, aperture and joint, and aperture is provided with plug；The pipe of described chimney filter
Wall is worked out by wire netting, is axially arranged with pipe socket；The outfan of described switch valve is provided with evacuation port, and switch valve is beaten
Evacuation port closing when opening, conversely, evacuation port is opened.
The present invention eliminates well casing, beneficial to deep basal pit using the deep-well structure being made up of sand drain, chimney filter and clay well head
Layering precipitation and excavation, does not affect the normal operation of excavator, and with high working efficiency, construction is easy, good excellent of dewatering effect
Point.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Use state schematic diagrams of the Fig. 2 for stage excavation.
Specific embodiment
Refering to Fig. 1, the present invention includes negative pressure system 1, positive pressure system 2 and deep-well structure 3, and the negative pressure system 1 is by vacuum
Pump 11, drain pipe 13, vacuum water-main 14, vacuum distributive pipe 15 and standby vacuum distributive pipe 17 are constituted, the draining of negative pressure system 1
Pipe 13, vacuum water-main 14 are connected to the two ends of vacuum pump 11, and one end and the vacuum water-main 14 of vacuum distributive pipe 15 connect
Connect, at least provided with a joint 16 on the pipe shaft of vacuum distributive pipe 15, joint 16 is provided with aperture 161；
The positive pressure system 2 is in charge of 23, switch valve 25 by air compressor machine 21, air header 22, air and valve 24 is constituted, just
The air compressor machine 21 of pressure system 2 is connected with air header 22, and air header 22 is in charge of 23 with air and is connected, and switch valve 25 is located at air
House steward 22 and air are in charge of between 23, and valve 24 is in charge of 23 other end located at air；
The deep-well structure 3 is made up of sand drain 31, chimney filter 33 and clay well head 32, and chimney filter 33 is buried in sand drain 31, is glued
Native well head 32 is located at the top of sand drain 31 space sealing by sand drain 31 and ground off-balancesheet；
The air of the positive pressure system 2 is in charge of 23 Jing valves 24 through on 15 joint 16 of vacuum distributive pipe of negative pressure system 1
Aperture 161 and extend in vacuum distributive pipe 15；Vacuum distributive pipe 15 is in charge of 23 clays for passing through deep-well structure 3 together with air
Well head 32 is simultaneously connected with the chimney filter 33 in sand drain 31, and at least one joint 16 is located at clay well head 32 on vacuum distributive pipe 15
Ground off-balancesheet；
Described standby 17 one end of vacuum distributive pipe is provided with joint 16, and standby vacuum distributive pipe 17 is buried in sand together with joint 16
In well 31, simultaneously the other end is connected with chimney filter 33；Described joint 16 is tubulose, the tube wall insertion of aperture 161 and joint 16, and little
Hole 161 is provided with plug；The wire netting that the tube wall of described chimney filter 33 is permeable, ventilative is worked out, and is axially arranged with pipe socket；Institute
The outfan of the switch valve 25 stated is provided with evacuation port, and evacuation port closing during the opening of switch valve 25, conversely, evacuation port is opened.
The embodiment of the present invention：
The installation of the present invention：Refering to Fig. 1, Fig. 2, the position of layout precipitation well point in the foundation ditch, by vacuum distributive pipe 15 and
Standby 17 one end glue joint 16 of vacuum distributive pipe, the other end are inserted in the pipe socket of chimney filter 33 and fix, standby；In deep-well
31 bottom of the sand drain laying Base with Sand Gravel Cushion of structure 3, chimney filter 33 is put together with vacuum distributive pipe 15 and standby vacuum distributive pipe 17
In sand drain 31, until chimney filter 33 is located on Base with Sand Gravel Cushion, the joint 16 of vacuum distributive pipe 15 is made to expose ground off-balancesheet, standby is true
The joint 16 of space division water pipe 17 is placed in sand drain 31, fills gravel, make clay well head at the top of sand drain 31 in sand drain 31
32, the outer wall of the parcel of clay well head 32 vacuum distributive pipe 15 space sealing by sand drain 31 and ground off-balancesheet；
The vacuum distributive pipe 15 for being connected to negative pressure system 1 is bondd with the joint 16 for exposing ground off-balancesheet, joint 16 is removed little
The air of positive pressure system 2 is in charge of 23 Jing valves 24 through the aperture 161 on joint 16 and extend into vacuum by the plug in hole 161
In distributive pipe 15, air is in charge of the termination of the termination higher than vacuum distributive pipe 15 of 23 valves 24, at joint 16 is in charge of air
23 use immobilization with adhesive tape；The negative pressure system 1 and positive pressure system 2 of the present invention passes through vacuum distributive pipe 15 and joint 16 and deep-well structure 3
Connection complete.
The precipitation work of the present invention：Refering to Fig. 1, Fig. 2, when the water level of foundation ditch is in charge of 23 valves higher than 2 air of positive pressure system
During 24 tip position, the air compressor machine 21 of the vacuum pump 11 and positive pressure system 2 of negative pressure system 1 is opened, while open air being in charge of
Switch valve 25 on 23, now, 15 suction side of vacuum distributive pipe is in negative pressure end, and air is in charge of 23 24 end of valve and is in malleation
End, increases the pressure reduction of local in vacuum distributive pipe 15, and the water in sand drain 31 is sucked by the bottom of vacuum distributive pipe 15, by true
Empty water-main 14, vacuum pump 11 are discharged by drain pipe 13 is quick, the working stage solve foundation ditch groundwater level it is higher when
The problem of section Quick drainage, improves the work efficiency of precipitation initial stage base pit dewatering；
When the water level of foundation ditch is in charge of the tip position of 23 valves 24 less than air, and higher than the position of 15 termination of vacuum distributive pipe
The vacuum pump 11 of negative pressure system 1 when putting, is continued on, the air compressor machine 21 of positive pressure system 2 is closed, is simultaneously closed off air and be in charge of on 23
Switch valve 25, now, the evacuation port opens voluntarily of switch valve 25, air are in charge of 23 and atmosphere, and air is in charge of 23 terminations
The input normal pressure of valve 24, and form flow-differential zone with the negative pressure in vacuum distributive pipe 15, valve 24 is with vacuum distributive pipe 15 at this
Flow-differential zone constitutes one air-spray, under the entrainment phenomena effect of air-spray so that from 31 bottom of sand drain suction vacuum point
Water in water pipe 15 becomes gas-vapor mix near valve 24, and gas-vapor mix is passed through vacuum in the presence of vacuum pump 11
Distributive pipe 15, vacuum water-main 14, vacuum pump 11 and drain pipe 13 are discharged, the working stage solve foundation ditch groundwater level compared with
The drainage problem of low period；
With the reduction and the reduction of the subsoil water water yield of water level, when the water level of foundation ditch is less than the termination position of vacuum distributive pipe 15
When putting, 1 vacuum pump 11 of negative pressure system works on, and air is in charge of the valve 24 of 23 terminations and the pressure of formation in vacuum distributive pipe 15
Difference area is still present, and the flow-differential zone promotes the air in sand drain 31 to be sucked by the termination of vacuum distributive pipe 15 in a large number, causes sand drain
31 and chimney filter 33 in gradually form negative pressure, now, sand drain 31 and chimney filter 33 produce absorption to the moisture in the foundation ditch periphery soil body and make
With by the water quick collecting in the soil body to sand drain 31 and chimney filter 33, and continuing to discharge by vacuum distributive pipe 15, the work rank
Section serves the effect for reducing moisture in soil mass of foundation pit.
Earthwork stage excavation work of the present invention：Refering to Fig. 1, Fig. 2, below base pit dewatering potential drop to this layer by layer absolute altitude at bottom
When, before earth excavation, from joint 16, dismounting vaccum conduit 15 and air are in charge of 23, you can implement opening for the earthwork by excavator
Operation is dug, excavator removes digging together with the precipitation well point one in foundation ditch, and deep-well structure 3 is dug disconnected with the earthwork, in foundation pit earth
In square digging process, there is no the impact of well casing, dig to this layer by layer absolute altitude at bottom, after the completion of digging, drop in layout
Vacuum distributive pipe 15 is found in the position of well point, again glue joint 16, according to the installation process of the present invention, will be connected to again
The vacuum distributive pipe 15 of negative pressure system 1 is bondd with the joint 16 for exposing ground off-balancesheet, removes the plug of 16 aperture 161 of joint, will just
The air of pressure system 2 is in charge of 23 Jing valves 24 through the aperture 161 on joint 16 and is extend in vacuum distributive pipe 15；The present invention
Negative pressure system 1 and positive pressure system 2 pass through vacuum distributive pipe 15 and joint 16 and deep-well structure 3 be again coupled to complete, continuation
Implement precipitation work.
The application of standby vacuum distributive pipe：Refering to Fig. 1, Fig. 2, the present invention pre-buried standby vacuum point in sand drain 31
Water pipe 17, once original vacuum distributive pipe 15 is damaged, can adopt standby vacuum distributive pipe 17 to continue to implement precipitation work, keep away
The complement deep-well in foundation ditch is exempted from, the secondary work that precipitation well point is set in foundation ditch.
Claims (4)
1. a kind of cannula type negative pressure air jet deep-well precipitation device, it is characterised in that it includes negative pressure system（1）, positive pressure system
（2）And deep-well structure（3）, the negative pressure system（1）By vacuum pump（11）, drain pipe（13), vacuum water-main（14）, vacuum point
Water pipe（15）And standby vacuum distributive pipe（17）Composition, negative pressure system（1）Drain pipe（13）, vacuum water-main（14）Connect respectively
It is connected on vacuum pump（11) two ends, vacuum distributive pipe（15）One end and vacuum water-main（14）Connection, vacuum distributive pipe（15）
Pipe shaft at least provided with a joint（16）, joint（16）It is provided with aperture（161）；The positive pressure system（2）By air compressor machine
（21）, air header（22）, air is in charge of（23）, switch valve（25）And valve（24）Composition, positive pressure system（2）Air compressor machine
（21）With air header（22）Connection, air header（22）It is in charge of with air（23）Connection, switch valve（25）Located at air header
（22）It is in charge of with air（23）Between, valve（24）It is in charge of located at air（23）The other end；The deep-well structure（3）By sand
Well（31）, chimney filter（33）And clay well head（32）Composition, chimney filter（33）It is buried in sand drain（31）It is interior, clay well head（32）It is located at sand
Well（31）Top and by sand drain（31）With the space sealing of ground off-balancesheet；The positive pressure system（2）Air be in charge of（23）Jing gas
Mouth（24）Through negative pressure system（1）Vacuum distributive pipe（15）Joint（16）On aperture（161）And it extend into vacuum distributive pipe
（15）It is interior；Vacuum distributive pipe（15）It is in charge of together with air（23）Through deep-well structure（3）Clay well head（32）And and sand drain
（31）Interior chimney filter（33）Connection, and vacuum distributive pipe（15）Upper at least one joint（16）Positioned at clay well head（32）Earth's surface
Outward；The standby vacuum distributive pipe（17）One end is provided with joint（16）, standby vacuum distributive pipe（17）Together with joint（16）Bury
In sand drain（31）The interior and other end and chimney filter（33）Connection.
2. a kind of cannula type negative pressure air jet deep-well precipitation device according to claim 1, it is characterised in that joint
（16）For tubulose, aperture（161）With joint（16）Tube wall insertion, and aperture（161）It is provided with plug.
3. a kind of cannula type negative pressure air jet deep-well precipitation device according to claim 1, it is characterised in that chimney filter
（33）Tube wall worked out by wire netting, be axially arranged with pipe socket.
4. a kind of cannula type negative pressure air jet deep-well precipitation device according to claim 1, it is characterised in that switch valve
（25）Outfan be provided with evacuation port, and switch valve（25）Evacuation port closing during opening, conversely, evacuation port is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510532006.8A CN105064383B (en) | 2015-08-27 | 2015-08-27 | Pipe-inserting negative pressure air jet deep-well dewatering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510532006.8A CN105064383B (en) | 2015-08-27 | 2015-08-27 | Pipe-inserting negative pressure air jet deep-well dewatering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105064383A CN105064383A (en) | 2015-11-18 |
| CN105064383B true CN105064383B (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510532006.8A Active CN105064383B (en) | 2015-08-27 | 2015-08-27 | Pipe-inserting negative pressure air jet deep-well dewatering device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958240B (en) * | 2017-04-14 | 2023-06-06 | 沈艳忱 | Air cushion type layered vacuum pipe well and soft foundation drainage method using same |
| CN108316325A (en) * | 2018-04-18 | 2018-07-24 | 上海兴怡基础工程有限公司 | A kind of vacuum deep well drinking-water pipe |
| CN111022036B (en) * | 2019-10-23 | 2022-12-06 | 核工业北京化工冶金研究院 | Method for detecting damage of well pipe |
| CN112281884A (en) * | 2020-11-06 | 2021-01-29 | 上海渊丰地下工程技术有限公司 | Well point dewatering device and operation method thereof |
| CN112281883B (en) * | 2020-11-06 | 2022-03-11 | 上海渊丰地下工程技术有限公司 | Precipitation system and operation method thereof |
| CN112252347B (en) * | 2020-11-06 | 2022-03-11 | 上海渊丰地下工程技术有限公司 | Deep well dewatering device and operation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2869132Y (en) * | 2006-03-01 | 2007-02-14 | 冯克俊 | Intubation type vacuum base pit deep-well precipitation device |
| CN202450536U (en) * | 2011-12-29 | 2012-09-26 | 青岛新华友建工集团股份有限公司 | Shallow dewatering and plugging construction device in foundation pit |
| JP6245499B2 (en) * | 2013-06-04 | 2017-12-13 | 株式会社大林組 | Groundwater level lowering system |
| CN203834529U (en) * | 2014-05-22 | 2014-09-17 | 中国建筑第四工程局有限公司 | Pressure-relieving anti-floating device for building foundation construction in high-water-level district |
| CN104264699B (en) * | 2014-09-30 | 2015-10-28 | 冯克俊 | Foundation ditch negative pressure air jet deep-well precipitation device |
| CN204875827U (en) * | 2015-08-27 | 2015-12-16 | 冯克俊 | Intubate formula negative pressure air -spray deep well precipitation device |
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2015
- 2015-08-27 CN CN201510532006.8A patent/CN105064383B/en active Active
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