CN107514005A - A kind of instrument and its construction method for improving Application of light well point precipitation efficiency - Google Patents
A kind of instrument and its construction method for improving Application of light well point precipitation efficiency Download PDFInfo
- Publication number
- CN107514005A CN107514005A CN201710903538.7A CN201710903538A CN107514005A CN 107514005 A CN107514005 A CN 107514005A CN 201710903538 A CN201710903538 A CN 201710903538A CN 107514005 A CN107514005 A CN 107514005A
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- Prior art keywords
- well point
- branch pipe
- water
- self priming
- priming pump
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- Pending
Links
- 238000001556 precipitation Methods 0.000 title claims abstract description 45
- 238000010276 construction Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 230000037452 priming Effects 0.000 claims abstract description 47
- 238000000605 extraction Methods 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- 239000004927 clay Substances 0.000 claims description 7
- 239000003755 preservative agent Substances 0.000 claims description 7
- 230000002335 preservative effect Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 230000009189 diving Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
Abstract
Base pit dewatering construction field of the present invention, and in particular to a kind of instrument and construction method for improving Application of light well point precipitation speed, including, well point branch pipe, its lower end embedment underground；Chimney filter, it is connected with well point branch pipe lower end, and the chimney filter is used to filter off debris；Vacuum self priming pump, it is connected with well point branch pipe upper end；Water header, it is connected with vacuum self priming pump；The vacuum self priming pump will be dived under water after extraction comes up by chimney filter and well point branch pipe and is drained into water header.Well point branch pipe is made using common PVC U pipes, have the advantages that simple and easy to get, easy to make, application effect is good, device is used repeatedly, corresponded by using well point branch pipe and vavuum pump, well-point arrangement is flexible, make single well-points dewatering situation controllable, have and save construction cost, improve the advantages of precipitation efficiency.
Description
Technical field
The invention belongs to base pit dewatering construction field, and in particular to it is a kind of improve Application of light well point precipitation speed instrument and apply
Work method.
Background technology
Be present the drawbacks of many technologies, economic aspect in traditional Application of light well point precipitation method, be mainly shown as：Pore-creating Cheng Jing
Slowly, traditional pipe well drilling diameter is larger, impact drill or slewing drilling machine when pore-creating is into well, very flexible, borehole wall construction
More complicated, cost is high；The slurry coat method that borehole wall surrounding enters in pore forming process, because condensing into mudcake and cohering in geotextiles mistake
On filter screen, barrier film is formed, is not easy to rinse well, block the passage between precipitation area and dewatering well, reducing the borehole wall, nearby stratum is permeable
Property, so that actual displacement does not reach estimated displacement much, have a strong impact on dewatering effect；Making well material can not reuse；
Light well point Large Diameter Pipeline, high-capacity pump, it is disposable pump-out, big to original water environmental impact, the energy is both wasted, is also unfavorable for base
Hole is stable.
Prior art literature is retrieved and found, above mentioned problem is still without good solution method at present.
The content of the invention
During it is an object of the invention to for the foundation pit construction precipitation such as the larger layer of sand of infiltration coefficient or mud burning into sand layer, carry
Go out a kind of instrument and construction method for improving Application of light well point precipitation speed, so as to shorten precipitation time, realize rapid construction.
In order to achieve the above object, the present invention is achieved through the following technical solutions：One kind improves Application of light well point precipitation effect
The instrument of rate, including,
Well point branch pipe, its lower end embedment underground；
Chimney filter, it is connected with well point branch pipe lower end, and the chimney filter is used to filter off debris；
Vacuum self priming pump, it is connected with well point branch pipe upper end；
Water header, it is connected with vacuum self priming pump；
The vacuum self priming pump will be dived under water after extraction comes up by chimney filter and well point branch pipe and is drained into water header.
In a kind of above-mentioned instrument for improving Application of light well point precipitation efficiency, the well point branch pipe is managed for PVC-U, specification DN50
Millimeter (mm), the embedded depth of the well point branch pipe determine according to precipitation depth and reservoir bed position.
In a kind of above-mentioned instrument for improving Application of light well point precipitation efficiency, the chimney filter is φ 48mm, and wall thickness 3mm's is seamless
Steel pipe.
In a kind of above-mentioned instrument for improving Application of light well point precipitation efficiency, the chimney filter bottom lock, the chimney filter top
The flange for connection is provided between the branch pipe of well point.
In a kind of above-mentioned instrument for improving Application of light well point precipitation efficiency, bore 15 φ's in the elongated scope of chimney filter tube wall
Small sircle hole, pitch-row 25mm, filter screen of double-baging outside, the filter screen use woven cloth, and one layer of larger nylon yarn of mesh is wrapped in outside again
Net, every 50~60mm 10# iron wire banding fixeds.
In a kind of above-mentioned instrument for improving Application of light well point precipitation efficiency, the chimney filter needs to be embedded to water-bearing layer after completing
It is interior, and should be than foundation ditch bottom depth 0.9m~1.2m.
In a kind of above-mentioned instrument for improving Application of light well point precipitation efficiency, the vacuum self priming pump power 2.2KW is described true
Set on empty self priming pump and be connected with two rubber hose, described vacuum self priming pump one end meets well point branch pipe, institute by rubber hose
State the vacuum self priming pump other end and water header, rubber hose both ends junction 12# iron wires are connected to by rubber hose
After fixation, then with preservative film bag 4-5 layers.
In a kind of above-mentioned instrument for improving Application of light well point precipitation efficiency, the water header is managed for PVC-U, specification DN=
200mm, water inlet is stayed according to well point branch pipe position correspondence.
In a kind of above-mentioned instrument for improving Application of light well point precipitation efficiency, it is provided with and catchments at the water header convergence
Well, the water header absolute altitude preferably try one's best close to phreatic line and along draw water water (flow) direction have 2.5 ‰ -5 ‰ the gradient, be easy to
Converge to sump.
On the other hand, present invention also offers a kind of construction method for the instrument for improving Application of light well point precipitation efficiency, the party
Method comprises the steps,
S1：According to foundation ditch scale and precipitation depth, calculate and determine well-point arrangement orientation, quantity；
S2：Along building side axis line, 1m × 0.8m groove is opened, for discharging punching recirculated water；
S3：It is a certain by φ 100mm flexible pipes and DN75mm fastener for connection, steel pipe alignment using high-pressure hydraulic pump punching, water pump
Well point point position, water pump is opened, pore-forming is to calculating depth, then hole flushing, untill clear water is flowed out；
S4：It is put into the well point branch pipe that lower end is connected with chimney filter；
S5：Select particle diameter 1.2mm~1.5mm coarse sand, be uniformly densely filled to from aperture 1m positions stop, after sealed with clay
Mouthful；
S6：Set on the vacuum self priming pump and be connected with rubber hose, the vacuum self priming pump one terminates well point branch pipe, separately
One termination water header, after both ends are fixed with 12# iron wires, then with preservative film bag 4-5 layers；
S7：S3~6 are repeated, all well point branch pipes are accessed into water header by respective vacuum self priming pump；
S8：Debugging is drawn water；
S9：Formally draw water.
Compared with prior art, the invention has the advantages that：Well point branch pipe is made using common PVC-U pipes, tool
Have the advantages that simple and easy to get, easy to make, application effect is good, device is used repeatedly, by using well point branch pipe and very
Empty pump corresponds, and well-point arrangement is flexible, makes single well-points dewatering situation controllable, has and saves construction cost, improves precipitation effect
The advantages of rate.
Brief description of the drawings
Fig. 1 is well-point arrangement plan；
Fig. 2 is A-A profiles.
In figure, well point branch pipe 1, chimney filter 2, flange 3, vacuum self priming pump 4, water header 5, rubber hose 6, sump 7, ditch
Groove 8, coarse sand 9, clay 10.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
Certain small-scale pit long 40m, wide 13.6m, foundation ditch center requirement reduction water level depth 4.9m, native infiltration coefficient take
0.173m/d, caliber 50mm, 2 long 1.2m of chimney filter, dewatering well quantity and spacing needed for calculating.
As shown in Figure 1 and Figure 2, a kind of instrument for improving Application of light well point precipitation efficiency, including：
Well point branch pipe 1, its lower end embedment underground；
Chimney filter 2, it is connected with the lower end of well point branch pipe 1, and the chimney filter 2 is used to filter off debris；
Vacuum self priming pump 4, it is connected with the upper end of well point branch pipe 1；
Water header 5, it is connected with vacuum self priming pump 4；
Diving imports water header 5 by the suction of vacuum self priming pump 4 along chimney filter 2 and well point branch pipe 1.On water header 5
Multiple link positions of vacuum self priming pump 4 are provided with, well point branch pipe 1 is linked into water header 5 by respective vacuum self priming pump 4,
Displacement control can be carried out to single precipitation point, multiple precipitation points can improve precipitation efficiency in Precipitation Process is carried out.
Preferably, well point branch pipe 1 is managed for PVC-U, specification DN50 millimeters (mm), the embedded depth root of the well point branch pipe 1
Determined according to precipitation depth and reservoir bed position.The cost of well point branch pipe 1 is relatively low made of PVC-U materials, saves construction cost.
Preferably, chimney filter 2 is φ 48mm, wall thickness 3mm seamless steel pipe.Chimney filter 2 is arranged on the lower end of well point branch pipe 1, uses
The material of high intensity is not easy to wear, and support effect is good.
Preferably, the bottom lock of chimney filter 2, the flange for connection is provided between the top of chimney filter 2 and well point branch pipe 1
3.The bottom of chimney filter 2 directly contacts well point bottom, it is not necessary to which permeable, enclosed construction uses more resistant to abrasion, chimney filter 2 and well point branch pipe 1
The connection of flange 3 is easy to dismount.
It is further preferred that 15 φ small sircle hole is bored in the elongated scope of the tube wall of chimney filter 2, and pitch-row 25mm, filter screen of double-baging outside,
The filter screen uses woven cloth, and outside is wrapped one layer of larger nylon mesh of mesh, consolidated every 50~60mm with 10# iron wire colligations again
It is fixed.The filter of the circular hole of suitable size, the outer nylon mesh for being provided with macropore filtering of pipe and aperture filtering is opened up on the tube wall of chimney filter 2
Net, multiple filtration effect is good, will not be brought into impurity in well point branch pipe 1 and cause the damage of vacuum self priming pump 4.
It is further preferred that chimney filter 2 needs to be embedded in water-bearing layer after completing, and should be than foundation ditch bottom depth 0.9m~1.2m.
In the present invention, chimney filter 2 needs to be arranged on lowest part, after carrying out impurities in water filtering, dives under water under the drive of vacuum self priming pump 4
Discharge.
Preferably, the power 2.2KW of vacuum self priming pump 4, set on the vacuum self priming pump 4 and be connected with two rubber hose 6,
Described one end of vacuum self priming pump 4 connects well point branch pipe 1 by rubber hose 6, and the other end of vacuum self priming pump 4 passes through rubber hose
6 are connected to water header 5, after the both ends junction of rubber hose 6 is fixed with 12# iron wires, then with preservative film bag 4-5 layers.For
Reach the optimal using effect of vacuum self priming pump 4, to keep air-tight state in the junction of vacuum self priming pump 4, be reinforced using iron wire
The outer rubber hose 6 for being surrounded by preservative film can ensure not produce gas leakage in certain elastic limit again, to ensure the pressure in pipeline
Power reaches preset value, gets to the dewatering effect of design.
Preferably, water header 5 is managed for PVC-U, specification DN=200mm, water inlet is stayed according to well point position correspondence.Catchment
House steward 5 laterally lays, and the diving in well point branch pipe 1 needs to be drained into water header 5, is managed using PVC-U, and perforate is convenient, pipe
Road is thicker, and corresponding well point is provided with connector on water header 5, needed each vacuum self priming pump on well point when mounted
4 are connected on water header 5, and laying is neat, is easy to manage.
It is further preferred that being provided with sump 7 at the convergence of water header 5, the absolute altitude of water header 5 is preferably tried one's best close
Phreatic line simultaneously has 2.5 ‰ -5 ‰ gradient along water (flow) direction of drawing water, and is easy to converge to sump 7.Water header 5 is laid to collection
Well 7 has certain inclination, and flowing water can be driven by gravity and flow to sump 7, and water will not occur when vacuum self priming pump 4 is stopped
Refluence situation.
On the other hand, present invention also offers a kind of construction method for the instrument for improving Application of light well point precipitation efficiency, the party
Method comprises the steps,
S1：According to foundation ditch scale and precipitation depth, calculate and determine well-point arrangement orientation, quantity；
S2：Along building side axis line, 1m × 0.8m groove 8 is opened, for discharging punching recirculated water；
S3：It is a certain by φ 100mm flexible pipes and DN75mm fastener for connection, steel pipe alignment using high-pressure hydraulic pump punching, water pump
Well point point position, water pump is opened, pore-forming is to calculating depth, then hole flushing, untill clear water is flowed out；
S4：It is put into the well point branch pipe 1 that lower end is connected with chimney filter 2；
S5：Select particle diameter 1.2mm~1.5mm coarse sand 9, be uniformly densely filled to from aperture 1m positions stop, after use clay
10 sealings；
S6：Set on the vacuum self priming pump 4 and be connected with rubber hose 6, the vacuum self priming pump 4 one terminates well point branch pipe
1, another termination water header 5, after both ends are fixed with 12# iron wires, then with preservative film bag 4-5 layers；
S7：S3~6 are repeated, all well point branch pipes 1 are accessed into water header 5 by respective vacuum self priming pump 4；
S8：Debugging is drawn water；
S9：Formally draw water.
Multi-hole pumping can reduce on overall structure influence, and beneficial to foundation ditch is stablized, the caliber of well point branch pipe 1 is small, into pore volume
Easily, the coarse sand 9 and clay 10 for filling wellhole do not interfere with soil texture and water penetration, do not influence precipitation efficiency.
According to the workflow of the above example description present invention.
Required according to precipitation, open up multiple well points, be embedded to chimney filter 2 and well point branch pipe 1 in each well point, on well point branch pipe 1
Side connects vacuum self priming pump 4, and more 4 tie points of vacuum self priming pump, the connection diving of vacuum self priming pump 4 are provided with water header 5
Diving imports water header 5 by the suction of vacuum self priming pump 4 along well point branch pipe 1.
Need to bury well point branch pipe 1 to underground when drawing water, be punched out as desired with high-pressure hydraulic pump, in order to prevent arranging
Impurities in water excessively causes drain line blockage during water, and hole flushing is carried out after pore-forming, and the water of hole flushing passes through building edge
Groove 8 discharge, then the well point branch pipe 1 with chimney filter 2 is put into correspondence position, chimney filter 2 can effectively filter large granular impurity,
Keep drainage channel smooth, reduce the damage to vacuum self priming pump 4, the space around well point branch pipe 1 is first filled out using coarse sand 8
Bury, sealed from aperture 1m opening positions clay 9, the position of well point branch pipe 1 is fixed.
The offer power of vacuum self priming pump 4 drinks up water is discharged into water header 5, the absolute altitude of water header 5 via well point branch pipe 1
Preferably try one's best have close to phreatic line and along water (flow) direction of drawing water 5 ‰ the gradient, be easy to converge to sump 7.
After engineering terminates, because the coarse sand 9 and clay 10 of sealing well water branch pipe can be removed easier, well point branch pipe 1
It can be reused after being taken out with chimney filter 2, dismounting is simple and convenient, and multiple well point branch pipes 1 can flexibly tackle different engine requests
Arrangement installation, dewatering effect is good, and can regulate and control single well-points dewatering progress.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (10)
- A kind of 1. instrument for improving Application of light well point precipitation efficiency, it is characterised in that including,Well point branch pipe, its lower end embedment underground；Chimney filter, it is connected with well point branch pipe lower end, and the chimney filter is used to filter off debris；Vacuum self priming pump, it is connected with well point branch pipe upper end；Water header, it is connected with vacuum self priming pump；The vacuum self priming pump will be dived under water after extraction comes up by chimney filter and well point branch pipe and is drained into water header.
- A kind of 2. instrument for improving Application of light well point precipitation efficiency according to claim 1, it is characterised in that the well point branch Manage and managed for PVC-U, specification DN50 millimeters (mm), the embedded depth of the well point branch pipe is true according to precipitation depth and reservoir bed position It is fixed.
- 3. a kind of instrument for improving Application of light well point precipitation efficiency according to claim 1, it is characterised in that the chimney filter is φ 48mm, wall thickness 3mm seamless steel pipe.
- A kind of 4. instrument for improving Application of light well point precipitation efficiency according to claim 3, it is characterised in that the chimney filter bottom Portion is closed, and the flange for connection is provided between the chimney filter top and well point branch pipe.
- A kind of 5. instrument for improving Application of light well point precipitation efficiency according to claim 4, it is characterised in that the chimney filter pipe 15 φ small sircle hole is bored in the elongated scope of wall, pitch-row 25mm, filter screen of double-baging outside, the filter screen uses woven cloth, outside to wrap again The larger nylon mesh of one layer of mesh, every 50~60mm 10# iron wire banding fixeds.
- A kind of 6. instrument for improving Application of light well point precipitation efficiency according to claim 5, it is characterised in that the chimney filter system Need to be embedded in water-bearing layer after the completion of work, and should be than foundation ditch bottom depth 0.9m~1.2m.
- 7. a kind of instrument for improving Application of light well point precipitation efficiency according to claim 1, it is characterised in that the vacuum is certainly Sucking pump power 2.2KW, set on the vacuum self priming pump and be connected with two rubber hose, described vacuum self priming pump one end passes through rubber Glue flexible pipe connects well point branch pipe, and the vacuum self priming pump other end is connected to water header, the rubber hose by rubber hose After both ends junction is fixed with 12# iron wires, then with preservative film bag 4-5 layers.
- 8. a kind of instrument for improving Application of light well point precipitation efficiency according to claim 7, it is characterised in that described to catchment always Manage and managed for PVC-U, specification DN=200mm, water inlet is stayed according to well point branch pipe position correspondence.
- 9. a kind of instrument for improving Application of light well point precipitation efficiency according to claim 8, it is characterised in that described to catchment always The poly- place of manifold is provided with sump, and the water header absolute altitude, which is preferably tried one's best close to phreatic line and along water (flow) direction of drawing water, to be had 2.5 ‰ -5 ‰ gradient, it is easy to converge to sump.
- 10. a kind of construction method for improving Application of light well point precipitation speed, this method comprise the steps,S1：According to foundation ditch scale and precipitation depth, calculate and determine well-point arrangement orientation, quantity；S2：Along building side axis line, 1m × 0.8m groove is opened, for discharging punching recirculated water；S3：Using high-pressure hydraulic pump punching, water pump is directed at a certain well point by φ 100mm flexible pipes and DN75mm fastener for connection, steel pipe Point position, opens water pump, pore-forming is to depth is calculated, then hole flushing, untill clear water is flowed out；S4：It is put into the well point branch pipe that lower end is connected with chimney filter；S5：Select particle diameter 1.2mm~1.5mm coarse sand, be uniformly densely filled to from aperture 1m positions stop, after sealed with clay；S6：Set on the vacuum self priming pump and be connected with rubber hose, the vacuum self priming pump one terminates well point branch pipe, the other end Water header is connect, after both ends are fixed with 12# iron wires, then with preservative film bag 4-5 layers；S7：S3~6 are repeated, all well point branch pipes are accessed into water header by respective vacuum self priming pump；S8：Debugging is drawn water；S9：Formally draw water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710903538.7A CN107514005A (en) | 2017-09-29 | 2017-09-29 | A kind of instrument and its construction method for improving Application of light well point precipitation efficiency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710903538.7A CN107514005A (en) | 2017-09-29 | 2017-09-29 | A kind of instrument and its construction method for improving Application of light well point precipitation efficiency |
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| Publication Number | Publication Date |
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| CN107514005A true CN107514005A (en) | 2017-12-26 |
Family
ID=60726843
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710903538.7A Pending CN107514005A (en) | 2017-09-29 | 2017-09-29 | A kind of instrument and its construction method for improving Application of light well point precipitation efficiency |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736311A (en) * | 2018-12-14 | 2019-05-10 | 东南大学 | The light-duty intelligent insertion apparatus of base pit dewatering well-point pipe in a kind of river |
| CN109972643A (en) * | 2019-05-06 | 2019-07-05 | 中国人民解放军空军工程大学 | A kind of region of FuShui base pit engineering Trinity joint precipitation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1264790A (en) * | 1968-07-23 | 1972-02-23 | ||
| CN104775443A (en) * | 2015-04-28 | 2015-07-15 | 金中天集团建设有限公司 | Well point dewatering method and device |
| CN205954648U (en) * | 2016-08-22 | 2017-02-15 | 中国二十冶集团有限公司 | Light well point precipitation device |
| CN207452926U (en) * | 2017-09-29 | 2018-06-05 | 宁波二十冶建设有限公司 | A kind of instrument for improving Application of light well point precipitation efficiency |
-
2017
- 2017-09-29 CN CN201710903538.7A patent/CN107514005A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1264790A (en) * | 1968-07-23 | 1972-02-23 | ||
| CN104775443A (en) * | 2015-04-28 | 2015-07-15 | 金中天集团建设有限公司 | Well point dewatering method and device |
| CN205954648U (en) * | 2016-08-22 | 2017-02-15 | 中国二十冶集团有限公司 | Light well point precipitation device |
| CN207452926U (en) * | 2017-09-29 | 2018-06-05 | 宁波二十冶建设有限公司 | A kind of instrument for improving Application of light well point precipitation efficiency |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736311A (en) * | 2018-12-14 | 2019-05-10 | 东南大学 | The light-duty intelligent insertion apparatus of base pit dewatering well-point pipe in a kind of river |
| CN109972643A (en) * | 2019-05-06 | 2019-07-05 | 中国人民解放军空军工程大学 | A kind of region of FuShui base pit engineering Trinity joint precipitation system |
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Address after: 315 800 Pearl River Road 429 Xindan Street, Beilun District, Ningbo City, Zhejiang Province Applicant after: Zhejiang 20 Smelter Construction Co.,Ltd. Applicant after: CHINA MCC20 GROUP Corp.,Ltd. Address before: 315 800 Pearl River Road 429 Xindan Street, Beilun District, Ningbo City, Zhejiang Province Applicant before: NINGBO MCC 20 CONSTRUCTION Co.,Ltd. Applicant before: CHINA MCC20 GROUP Corp.,Ltd. |
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