CN105064383A - 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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- CN105064383A CN105064383A CN201510532006.8A CN201510532006A CN105064383A CN 105064383 A CN105064383 A CN 105064383A CN 201510532006 A CN201510532006 A CN 201510532006A CN 105064383 A CN105064383 A CN 105064383A
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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 works foundation pit dewatering technical field, be greater than ten meters for precipitation depth
Foundation ditch, especially a kind of cannula type negative pressure air jet deep-well precipitation device.
Background technology
Deep pit digging is the important construction sequence of modern heavy construction underground structure, in foundation ditch, dewatering is also known as groundwater control, namely in Foundation Pit Construction, the requirement of supporting and protection structure and foundation ditch excavation and construction is met with dewatering, the groundwater table of construction environment is higher, the degree of depth of foundation requirement is darker, and its difficulty of construction is larger.
Prior art implements foundation pit dewatering by being provided with precipitation well point in foundation ditch, first be beat a bite deep-well, in deep-well, the well casing isometric with well depth is set, between the inwall and the outer wall of well casing of deep-well, fill gravel form sand drain, well casing arranges well lid, and the vacuum distributive pipe of negative pressure system and the air of positive pressure system is in charge of to be worn by well lid implements precipitation to well casing.Problems existing is, soil excavation due to deep foundation ditch is all that layering is carried out, namely before every layer of soil excavation, below the absolute altitude at the phreatic table in this floor height foundation ditch will be dropped to this end layer by layer, soil excavation is implemented by excavator, because in foundation ditch, many places are provided with precipitation well point, hinder the normal operation of excavator, well casing overwhelms by excavator, miscue, or well casing is dug disconnected phenomenon occur repeatedly, precipitation well point is caused to be scrapped, the deep pit digging carried out due to layering not yet completes, foundation pit dewatering also needs to proceed, can only in foundation ditch complement deep-well, in foundation ditch, secondary arranges precipitation well point, cause manpower, material resources and waste of time.
Summary of the invention
The cannula type negative pressure air jet deep-well precipitation device provided for the deficiencies in the prior art is provided, the present invention adopts the deep-well structure be made up of sand drain, chimney filter and clay well head, eliminate well casing, be beneficial to layering precipitation and the excavation of deep foundation ditch, do not affect the normal operation of excavator, have operating efficiency high, construction is easy, the advantage that dewatering effect is good.
The concrete technical scheme realizing the object of the invention is:
A kind of cannula type negative pressure air jet deep-well precipitation device, its feature comprises negative pressure system, positive pressure system and deep-well structure, described negative pressure system is made up of vacuum pump, gutter, vacuum water main, vacuum distributive pipe and vacuum distributive pipe for subsequent use, the gutter of negative pressure system, vacuum water main are connected to the two ends of vacuum pump, one end of vacuum distributive pipe is connected with vacuum water main, the pipe shaft of vacuum distributive pipe is at least provided with a joint, joint is provided with aperture;
Described positive pressure system is in charge of by air compressor machine, air header, air, switch valve and valve form, the air compressor machine of positive pressure system is connected with air header, 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, and valve is located at the other end that air is in charge of;
Described deep-well structure is made up of sand drain, chimney filter and clay well head, and chimney filter is buried in sand drain, clay well head be located at sand drain top and by sand drain with ground off-balancesheet space sealing;
The air of described positive pressure system is in charge of the aperture on the vacuum distributive pipe joint that valve passes negative pressure system and extend in vacuum distributive pipe; Vacuum distributive pipe is in charge of the clay well head through deep-well structure together with air and is connected with the chimney filter in sand drain, and vacuum distributive pipe has at least a joint be positioned at clay well head ground off-balancesheet;
Described vacuum distributive pipe one end for subsequent use is provided with joint, and vacuum distributive pipe for subsequent use to be buried in sand drain together with joint and the other end is connected with chimney filter.
Described joint is tubulose, and the tube wall of aperture and joint is through, and aperture is provided with plug; The tube wall of described chimney filter is worked out by wire lath, is axially arranged with pipe socket; The output of described switch valve is provided with evacuation port, and when switch valve is opened, evacuation port is closed, otherwise evacuation port is opened.
The present invention adopts the deep-well structure be made up of sand drain, chimney filter and clay well head, eliminates well casing, is beneficial to layering precipitation and the excavation of deep foundation ditch, does not affect the normal operation of excavator, have operating efficiency high, and construction is easy, the advantage that dewatering effect is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the using state schematic diagram of stage excavation.
Detailed description of the invention
Consult Fig. 1, the present invention includes negative pressure system 1, positive pressure system 2 and deep-well structure 3, described negative pressure system 1 is made up of vacuum pump 11, gutter 13, vacuum water main 14, vacuum distributive pipe 15 and vacuum distributive pipe 17 for subsequent use, the gutter 13 of negative pressure system 1, vacuum water main 14 are connected to the two ends of vacuum pump 11, one end of vacuum distributive pipe 15 is connected with vacuum water main 14, the pipe shaft of vacuum distributive pipe 15 is at least provided with a joint 16, joint 16 is provided with aperture 161;
Described positive pressure system 2 is in charge of 23 by air compressor machine 21, air header 22, air, switch valve 25 and valve 24 form, the air compressor machine 21 of positive pressure system 2 is connected with air header 22, air header 22 and air are in charge of 23 and are connected, air header 22 is located at by switch valve 25 and air is in charge of between 23, and valve 24 is located at the other end that air is in charge of 23;
Described 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, clay well head 32 be located at sand drain 31 top and by sand drain 31 space sealing with ground off-balancesheet;
The air of described positive pressure system 2 is in charge of 23 and is passed the aperture 161 on vacuum distributive pipe 15 joint 16 of negative pressure system 1 through valve 24 and extend in vacuum distributive pipe 15; Vacuum distributive pipe 15 is in charge of 23 together with air and is passed the clay well head 32 of deep-well structure 3 and be connected with the chimney filter 33 in sand drain 31, and vacuum distributive pipe 15 has at least a joint 16 be positioned at clay well head 32 ground off-balancesheet;
Described vacuum distributive pipe 17 one end for subsequent use is provided with joint 16, and vacuum distributive pipe 17 for subsequent use is buried in the interior also other end of sand drain 31 together with joint 16 and is connected with chimney filter 33; Described joint 16 is tubulose, and aperture 161 is through with the tube wall of joint 16, and aperture 161 is provided with plug; The wire lath that the tube wall of described chimney filter 33 is permeable, ventilative is worked out, and is axially arranged with pipe socket; The output of described switch valve 25 is provided with evacuation port, and when switch valve 25 is opened, evacuation port is closed, otherwise evacuation port is opened.
The embodiment of the present invention:
Installation of the present invention: consult Fig. 1, Fig. 2, the position of layout precipitation well point in foundation ditch, by vacuum distributive pipe 15 and vacuum distributive pipe 17 one end glue joint 16 for subsequent use, the pipe socket that the other end is inserted into chimney filter 33 is interior and fixing, for subsequent use; Base with Sand Gravel Cushion is laid bottom the sand drain 31 of deep-well structure 3, chimney filter 33 is placed in sand drain 31 together with vacuum distributive pipe 15 and vacuum distributive pipe 17 for subsequent use, until chimney filter 33 is positioned on Base with Sand Gravel Cushion, the joint 16 of vacuum distributive pipe 15 is made to expose ground off-balancesheet, the joint 16 of vacuum distributive pipe 17 for subsequent use is placed in sand drain 31, gravel is filled in sand drain 31, make clay well head 32 at the top of sand drain 31, clay well head 32 wrap up vacuum distributive pipe 15 outer wall and by the space sealing of sand drain 31 with ground off-balancesheet;
The vacuum distributive pipe 15 being connected to negative pressure system 1 is bondd with the joint 16 exposing ground off-balancesheet, take off the plug of joint 16 aperture 161, the air of positive pressure system 2 is in charge of 23 pass the aperture 161 on joint 16 through valve 24 and extend in vacuum distributive pipe 15, air is in charge of the termination of termination higher than vacuum distributive pipe 15 of 23 valves 24, at joint 16 place, air is in charge of 23 and uses immobilization with adhesive tape; Negative pressure system 1 of the present invention and positive pressure system 2 are completed with the connection of deep-well structure 3 by vacuum distributive pipe 15 and joint 16.
Precipitation work of the present invention: consult Fig. 1, Fig. 2, when the water level of foundation ditch is in charge of the tip position of 23 valves 24 higher than positive pressure system 2 air, open the vacuum pump 11 of negative pressure system 1 and the air compressor machine 21 of positive pressure system 2, open air simultaneously and be in charge of switch valve 25 on 23, now, vacuum distributive pipe 15 suction side is in negative pressure end, valve 24 end that air is in charge of 23 is in positive pressure side, the pressure reduction of local in vacuum distributive pipe 15 is increased, water in sand drain 31 is sucked by the bottom of vacuum distributive pipe 15, by vacuum water main 14, vacuum pump 11 is discharged fast by gutter 13, this working stage solves the problem of the higher period Quick drainage of foundation ditch groundwater level, improve the operating efficiency of precipitation initial stage foundation pit dewatering,
When the water level of foundation ditch to be in charge of the tip position of 23 valves 24 lower than air, and during position higher than vacuum distributive pipe 15 termination, continue the vacuum pump 11 opening negative pressure system 1, close the air compressor machine 21 of positive pressure system 2, closedown air is in charge of the switch valve 25 on 23 simultaneously, now, the evacuation port of switch valve 25 is opened voluntarily, air is in charge of 23 and is communicated with air, the valve 24 that air is in charge of 23 terminations inputs normal pressure, and form flow-differential zone with the negative pressure in vacuum distributive pipe 15, valve 24 and vacuum distributive pipe 15 form one air-spray in this flow-differential zone, under the entrainment phenomena effect of air-spray, the water sucked in vacuum distributive pipe 15 from sand drain 31 bottom is made to become gas-vapor mix near valve 24, under the effect of vacuum pump 11, gas-vapor mix is passed through vacuum distributive pipe 15, vacuum water main 14, vacuum pump 11 and gutter 13 are discharged, this working stage solves the drainage problem of foundation ditch groundwater level lower period,
Along with the reduction of water level and the minimizing of the underground water water yield, when tip position lower than vacuum distributive pipe 15 of the water level of foundation ditch, negative pressure system 1 vacuum pump 11 works on, the valve 24 that air is in charge of 23 terminations still exists with the interior flow-differential zone formed of vacuum distributive pipe 15, this flow-differential zone impels the air in sand drain 31 to be sucked in a large number by the termination of vacuum distributive pipe 15, cause forming negative pressure gradually in sand drain 31 and chimney filter 33, now, moisture in sand drain 31 and chimney filter 33 pairs of foundation ditch periphery soil bodys produces suction-operated, by the water quick collecting in the soil body in sand drain 31 and chimney filter 33, and continue to discharge by vacuum distributive pipe 15, this working stage serves the effect reducing moisture in soil mass of foundation pit.
Earthwork stage excavation work of the present invention: consult Fig. 1, Fig. 2, time below foundation pit dewatering potential drop to the absolute altitude at this end layer by layer, 23 are in charge of from joint 16 dismounting vaccum conduit 15 and air before soil excavation, the excavation operation of the earthwork can be implemented by excavator, excavator removes together with the precipitation well point one in foundation ditch and digs, deep-well structure 3 is dug disconnected with the earthwork, in pit earthwork digging process, there is no the impact of well casing, dig to the absolute altitude at this end layer by layer, after digging completes, vacuum distributive pipe 15 is found in the position of layout precipitation well point, glue joint 16 again, according to installation process of the present invention, again the vacuum distributive pipe 15 being connected to negative pressure system 1 is bondd with the joint 16 exposing ground off-balancesheet, take off the plug of joint 16 aperture 161, the air of positive pressure system 2 is in charge of 23 pass the aperture 161 on joint 16 through valve 24 and extend in vacuum distributive pipe 15, negative pressure system 1 of the present invention and positive pressure system 2 have been connected again by vacuum distributive pipe 15 and joint 16 and deep-well structure 3, continue to implement precipitation work.
The application of vacuum distributive pipe for subsequent use: consult Fig. 1, Fig. 2, the present invention is pre-buried vacuum distributive pipe 17 for subsequent use in sand drain 31, once original vacuum distributive pipe 15 damages, vacuum distributive pipe 17 for subsequent use can be adopted to continue to implement precipitation work, avoid complement deep-well in foundation ditch, in foundation ditch, secondary arranges the work of precipitation well point.
Claims (4)
1. a cannula type negative pressure air jet deep-well precipitation device, it is characterized in that it comprises negative pressure system (1), positive pressure system (2) and deep-well structure (3), described negative pressure system (1) is by vacuum pump (11), gutter (13), vacuum water main (14), vacuum distributive pipe (15) and vacuum distributive pipe for subsequent use (17) composition, the gutter (13) of negative pressure system (1), vacuum water main (14) is connected to the two ends of vacuum pump (11), one end of vacuum distributive pipe (15) is connected with vacuum water main (14), the pipe shaft of vacuum distributive pipe (15) is at least provided with a joint (16), joint (16) is provided with aperture (161), described positive pressure system (2) is in charge of (23), switch valve (25) and valve (24) is formed by air compressor machine (21), air header (22), air, the air compressor machine (21) of positive pressure system (2) is connected with air header (22), air header (22) is in charge of (23) and is connected with air, air header (22) is located at by switch valve (25) and air is in charge of between (23), and valve (24) is located at the other end that air is in charge of (23), described 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), clay well head (32) be located at sand drain (31) top and by sand drain (31) with ground off-balancesheet space sealing, the air of described positive pressure system (2) is in charge of (23) and is extend in vacuum distributive pipe (15) through valve (24) through the aperture (161) on vacuum distributive pipe (15) joint (16) of negative pressure system (1), vacuum distributive pipe (15) is in charge of (23) through the clay well head (32) of deep-well structure (3) together with air and is connected with the chimney filter (33) in sand drain (31), and vacuum distributive pipe (15) has a joint (16) with being positioned at clay well head (32) off-balancesheet at least, described vacuum distributive pipe (17) one end for subsequent use is provided with joint (16), and vacuum distributive pipe (17) for subsequent use is buried in the interior also other end of sand drain (31) together with joint (16) and is connected with chimney filter (33).
2. a kind of cannula type negative pressure air jet deep-well precipitation device according to claim 1, is characterized in that joint (16) is tubulose, and aperture (161) is through with the tube wall of joint (16), and aperture (161) is provided with plug.
3. a kind of cannula type negative pressure air jet deep-well precipitation device according to claim 1, is characterized in that the tube wall of chimney filter (33) is worked out by wire lath, is axially arranged with pipe socket.
4. a kind of cannula type negative pressure air jet deep-well precipitation device according to claim 1, is characterized in that the output of switch valve (25) is provided with evacuation port, and when switch valve (25) is opened, evacuation port is closed, otherwise 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 |
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| 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 |
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| CN105064383A true CN105064383A (en) | 2015-11-18 |
| CN105064383B CN105064383B (en) | 2017-04-26 |
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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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Cited By (6)
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| CN106958240A (en) * | 2017-04-14 | 2017-07-18 | 沈艳忱 | Air-cushion type batch vacuum pipe well and apply its soft foundation Yield rainfall relation method |
| 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 |
| CN111022036A (en) * | 2019-10-23 | 2020-04-17 | 核工业北京化工冶金研究院 | Method for detecting damage of well pipe |
| CN112252347A (en) * | 2020-11-06 | 2021-01-22 | 上海渊丰地下工程技术有限公司 | Deep well dewatering device and operation method thereof |
| CN112281883A (en) * | 2020-11-06 | 2021-01-29 | 上海渊丰地下工程技术有限公司 | Precipitation system and operation method thereof |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106958240A (en) * | 2017-04-14 | 2017-07-18 | 沈艳忱 | Air-cushion type batch vacuum pipe well and apply its soft foundation Yield rainfall relation method |
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| CN112281883A (en) * | 2020-11-06 | 2021-01-29 | 上海渊丰地下工程技术有限公司 | Precipitation system and operation method thereof |
| 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 |
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