CN104674830B - A kind of construction method of well-points dewatering - Google Patents
A kind of construction method of well-points dewatering Download PDFInfo
- Publication number
- CN104674830B CN104674830B CN201510110304.8A CN201510110304A CN104674830B CN 104674830 B CN104674830 B CN 104674830B CN 201510110304 A CN201510110304 A CN 201510110304A CN 104674830 B CN104674830 B CN 104674830B
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- CN
- China
- Prior art keywords
- well
- wellhole
- pipe
- point
- filter assemblies
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 title claims abstract description 32
- 230000000712 assembly Effects 0.000 claims abstract description 24
- 238000000429 assembly Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000005553 drilling Methods 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract description 5
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 abstract description 4
- 239000011499 joint compound Substances 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000004804 winding Methods 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Filtering Materials (AREA)
Abstract
The invention provides the construction method of a kind of well-points dewatering, comprise the following steps: (1) according to the design drawing of well-points dewatering, surveying setting-out at the construction field (site), determine the drilling well position of well point, grooved position, horizontal elevation；(2) use drilling machinery in the drilling well position determined, get out the wellhole meeting projected depth；(3) groove of digging laying well point pipeline；(4) carrying out the pipe laying in wellhole, the well-point pipe that bottom is provided with deformable tubulose filter assemblies puts into wellhole, is fixed at projected depth the bottom of well-point pipe；(5) deformable tubulose filter assemblies is expanded, by deformable tubulose filter assemblies spreading so that it is be close on borehole wall, play support borehole wall and the effect of filtration；(6) installing suction pump, lay water delivery house steward, each well-point pipe is obtained water side and is connected with water delivery house steward, carry out construction of drawing water, the present invention is without hindrance discharging in construction by subsoil water, and sand and mud is blocked in wellhole.
Description
Technical field
The present invention relates to the construction method of the support & protection of foundation pit for precipitation used in a kind of architecture construction, the construction of a kind of well-points dewatering
Method.
Background technology
Along with the development of modern society, the use function of building is constantly expanded, and particularly in big city, newly-built building is for ground
The utilization in lower space is more and more extensive, if the basement of building the most all reaches dried layer, foundation depth even from tens meters to several
Ten meters.Therefore, to the method for foundation pit construction it is also proposed that new requirement.
A kind of well-point dewatering construction technique of the prior art, the most first uses general geology rig after mud off drilling and forming hole, pacifies
Dress filter tube forms pipe well, then uses high-pressure water jet to rinse in filter tube, destroys slurry coat method structure sheaf, and makes filter tube pipe week
Self-forming filter course, the outlet pipe that then front end is provided with immersible pump is arranged in filter tube, finally starts immersible pump and realizes well-points dewatering.
But this kind of construction method complex operation in practice of construction, the blocking and filter tube the most easily deposits, causing well point to block becomes dried-up well.
Make precipitation unsuccessful, it is easy to cause great engineering accident, as all relevant with this in the domestic foundation pit collapse accident appeared in the newspapers repeatly.
In existing construction method, also have use filling back-up sand hardcore in the borehole as the construction method of filter course, but this kind of method
There is defect that construction is loaded down with trivial details equally, and cannot be avoided alluvial blocking too, cause well point to block the defect becoming dried-up well.
Summary of the invention
The present invention relates to the construction method of a kind of well-points dewatering, be effectively simplified the operation of construction so that practice of construction is easy and simple to handle, and
And it is avoided that the situation that well point blocks.
The invention provides the construction method of a kind of well-points dewatering, comprise the following steps:
(1) according to the design drawing of well-points dewatering, surveying setting-out at the construction field (site), determine the drilling well position of well point, grooved position,
Horizontal elevation；
(2) use drilling machinery in the drilling well position determined, get out the wellhole meeting projected depth；
(3) groove of digging laying well point pipeline；
(4) carrying out the pipe laying in wellhole, the well-point pipe that bottom is provided with deformable tubulose filter assemblies puts into wellhole, will
The bottom of well-point pipe is fixed at projected depth；
(5) deformable tubulose filter assemblies is expanded, by deformable tubulose filter assemblies spreading so that it is be close on borehole wall,
Play support borehole wall and the effect of filtration；
(6) suction pump is installed, lays water delivery house steward, each well-point pipe is obtained water side and is connected with water delivery house steward, carry out construction of drawing water；
Wherein, deformable tubulose filter assemblies includes:
Base tube, it is tubular part, and on base tube wall, bearing of trend along pipe is provided with the crack of some row strips, and in adjacent column
Mutually stagger in strip crack；
Filter course, covers base tube and is shaped generally as tubulose；
Sleeve, covers the direction extended along pipe on the outside of the filter course of tubulose, the wall of sleeve and arranges the hole of some row rhombuses, and
Diamond hole in adjacent column mutually staggers.
The deformable tubulose filter assemblies that the present invention uses in construction is after expansion construction completes, radial through deformable tubular filter group
The water of part is through the filtration of each layer, and without hindrance discharges subsoil water, and sand and mud is blocked in wellhole.So, after expansion
The internal diameter that deformable tubulose filter assemblies obtains after making sand control is maximum, adds the drainage area in wellhole, simultaneously deformable tubulose mistake
Filter assembly has supporting role for borehole wall, the beneficially discharge of subsoil water, common owing to space exists in being avoided that again wellhole
The annular plug of generation, the phenomenon of borehole wall erosion.
Accompanying drawing explanation
Accompanying drawing 1 is deformable tubulose filter assemblies and expands schematic diagram.
Accompanying drawing 2 is the structural representation of deformable tubulose filter assemblies.
Detailed description of the invention
The construction method of certain engineering Deep Foundation Pit Well-Point Dewatering: include
(1) according to the design drawing of well-points dewatering, surveying setting-out at the construction field (site), determine the drilling well position of well point, grooved position,
Horizontal elevation；
(2) use drilling machinery in the drilling well position determined, get out the wellhole meeting projected depth；
(3) groove of digging laying well point pipeline；
(4) pipe laying in wellhole is carried out；It is specially and the drill bit of drilling machinery is withdrawn wellhole, bottom is provided with deformable tube
The well-point pipe of shape filter assemblies puts into wellhole, is fixed at projected depth the bottom of well-point pipe；
(5) deformable tubulose filter assemblies is expanded；By deformable tubulose filter assemblies spreading so that it is be close on borehole wall,
Play support borehole wall and the effect of filtration；
(6) suction pump is installed, lays water delivery house steward, each well-point pipe is obtained water side and is connected with water delivery house steward, carry out construction of drawing water.
As shown in Figure 2, deformable tubulose filter assemblies includes: base tube 1, and it is tubular part, along the extension side of pipe on base tube wall
To being provided with the crack of some row strips, and mutually stagger in the strip crack in adjacent column；Filter course 2, covers base tube and is formed as
Generally tubular；Sleeve 3, covers the direction extended along pipe on the outside of the filter course of tubulose, the wall of sleeve and arranges some row rhombuses
Diamond hole in hole, and adjacent column mutually staggers.
Filter course 2 between base tube 1 and sleeve 3, when base tube 1 expanded radially, due to the expansion between base tube 1 and sleeve 3
Difference, filter course 2 is necessary to ensure that the two will not interfere.Filter course 2 preferably comprises three layer filtration material: outer layer is relatively crude
Rough metal material braid, can use overlapped sheet metal braiding to form, be connected with each other, form monoblock type knot between sheet metal
Structure, and be connected with the internal surface of sleeve pipe covered outside；Intermediate layer is that thread material continuous winding is formed, and this thread material is preferably
Stainless steel silk or synthetic fibres；Internal layer is stainless steel cloth or synthetic fiber cloth.
As shown in Figure 1, deformable tubulose filter assemblies can utilize multiple method to form dilatancy radially.Preferably mode is:
The expansion vertebra 4 that can pass through is put into so that expansion vertebra 4 is under the effect of mechanical force or hydraulic coupling, through base tube in well-point pipe
Inside, so that deformable tubulose filter assemblies is expanded；Another kind of preferably mode is: directly apply hydraulic coupling to deformable
The inside of tubular filter assembly so that it is expand.
Further preferred construction method is:
Including: step (7), in well-point pipe bottom and deformable tubulose filter assemblies junction, arranges level sensor and flow-velocity sensing
Device, is connected sensor with control centre, when after well-points dewatering construction operation a period of time, if a sensor senses that level of ground water does not has
There is arrival predetermined design water level, and flow velocity signal is abnormal, then judge that alluvial occurs in this wellhole, closes the company of this well-point pipe and water delivery house steward
Connecing valve, extracted by this well-point pipe, the deformable tubulose filter assemblies cleaning end reinstalls well-point pipe or the deformable tubulose more renewed
After filter assemblies, distending again.
Claims (1)
1. a construction method for well-points dewatering, comprises the following steps:
(1) according to the design drawing of well-points dewatering, surveying setting-out at the construction field (site), determine the drilling well position of well point, grooved position,
Horizontal elevation；
(2) use drilling machinery in the drilling well position determined, get out the wellhole meeting projected depth；
(3) groove of digging laying well point pipeline；
(4) carrying out the pipe laying in wellhole, the well-point pipe that bottom is provided with deformable tubulose filter assemblies puts into wellhole, will
The bottom of well-point pipe is fixed at projected depth；
(5) deformable tubulose filter assemblies is expanded, by deformable tubulose filter assemblies spreading so that it is be close on borehole wall,
Play support borehole wall and the effect of filtration；
(6) suction pump is installed, lays water delivery house steward, each well-point pipe is obtained water side and is connected with water delivery house steward, carry out construction of drawing water；
Wherein, deformable tubulose filter assemblies includes:
Base tube, it is tubular part, and on base tube wall, bearing of trend along pipe is provided with the crack of some row strips, and in adjacent column
Mutually stagger in strip crack；
Filter course, covers base tube and is shaped generally as tubulose；
Sleeve, covers the direction extended along pipe on the outside of the filter course of tubulose, the wall of sleeve and arranges the hole of some row rhombuses, and
Diamond hole in adjacent column mutually staggers.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142966.8A CN105714840B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
| CN201510110304.8A CN104674830B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
| CN201610140736.8A CN105714839B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
| CN201610141389.0A CN105804104B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
| CN201610142098.3A CN105735330B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510110304.8A CN104674830B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
Related Child Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610142098.3A Division CN105735330B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
| CN201610142966.8A Division CN105714840B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
| CN201610140736.8A Division CN105714839B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
| CN201610141389.0A Division CN105804104B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104674830A CN104674830A (en) | 2015-06-03 |
| CN104674830B true CN104674830B (en) | 2016-08-17 |
Family
ID=53310377
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510110304.8A Expired - Fee Related CN104674830B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
| CN201610141389.0A Active CN105804104B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610141389.0A Active CN105804104B (en) | 2015-03-13 | 2015-03-13 | A kind of construction method of well-points dewatering |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104674830B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337427B (en) * | 2016-09-26 | 2018-06-22 | 湖南科技大学 | A kind of deformation control method in the pre- dewatering construction of foundation pit |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61211415A (en) * | 1985-03-18 | 1986-09-19 | Takenaka Komuten Co Ltd | Reduction well construction method |
| SU1317065A1 (en) * | 1985-06-17 | 1987-06-15 | Всесоюзный Научно-Исследовательский,Конструкторско-Технологический И Проектно-Изыскательский Институт По Осушению Месторождений Полезных Ископаемых,Специальным Горным Работам,Рудничной Геологии И Маркшейдерскому Делу | Method of constructing water intake well |
| DE3703534A1 (en) * | 1987-02-06 | 1988-08-25 | Bilfinger Berger Bau | Method for producing a well |
| CN2563191Y (en) * | 2002-08-12 | 2003-07-30 | 李景新 | Water dropping machine for well point |
| CN100429356C (en) * | 2006-03-01 | 2008-10-29 | 冯克俊 | Vacuum foundation-pit deep-well precipitation apparatus |
| CN102002959B (en) * | 2010-12-21 | 2015-09-09 | 上海广联建设发展有限公司 | Underground structure substrate water draw-off and distribution method thereof |
| CN202194686U (en) * | 2011-08-03 | 2012-04-18 | 中铁十二局集团第四工程有限公司 | Well-point dewatering device at bottom of tunnel |
| CN102383437B (en) * | 2011-08-08 | 2015-05-20 | 河南理工大学 | Well point positioned pumping tubular well and well point positioned pumping method |
| CN202644552U (en) * | 2012-05-08 | 2013-01-02 | 上海市水利工程集团有限公司 | Light well-point dewatering device for cofferdam foundation pit |
| CN103526780B (en) * | 2013-10-23 | 2015-06-24 | 天津大学 | Water plugging seepage-proofing method for recharge well |
-
2015
- 2015-03-13 CN CN201510110304.8A patent/CN104674830B/en not_active Expired - Fee Related
- 2015-03-13 CN CN201610141389.0A patent/CN105804104B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105804104A (en) | 2016-07-27 |
| CN105804104B (en) | 2017-08-15 |
| CN104674830A (en) | 2015-06-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: The inventor has waived the right to be mentioned Inventor before: Chen Zhuojie |
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| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160719 Address after: 017, 315000, 128 Exhibition Road, Jiangdong District, Zhejiang, Ningbo Applicant after: NINGBO JIANGDONGFEICHUANG ELECTRONIS TECHNOLOGY CO.,LTD. Address before: The 11 group Wang Xie village Beilun Daxie Development Zone 315812 area in Zhejiang city of Ningbo Province Applicant before: Chen Zhuojie |
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| C14 | Grant of patent or utility model | ||
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Inventor after: Han Chunlin Inventor before: The inventor has waived the right to be mentioned |
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Effective date of registration: 20170811 Address after: 5, 158100 Permanent Committee of Mt. Hengshan District, Heilongjiang, Jixi Patentee after: Han Chunlin Address before: 017, 315000, 128 Exhibition Road, Jiangdong District, Zhejiang, Ningbo Patentee before: NINGBO JIANGDONGFEICHUANG ELECTRONIS TECHNOLOGY CO.,LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20180313 |