CN103835302A - Deep foundation pit dewatering tube well shut-in construction method for superficial layer confined water soil layer - Google Patents

Deep foundation pit dewatering tube well shut-in construction method for superficial layer confined water soil layer Download PDF

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Publication number
CN103835302A
CN103835302A CN201210487910.8A CN201210487910A CN103835302A CN 103835302 A CN103835302 A CN 103835302A CN 201210487910 A CN201210487910 A CN 201210487910A CN 103835302 A CN103835302 A CN 103835302A
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CN
China
Prior art keywords
well
shut
construction
precipitation pipe
concrete
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Pending
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CN201210487910.8A
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Chinese (zh)
Inventor
杨前
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China MCC20 Group Corp Ltd
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China MCC20 Group Corp Ltd
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Application filed by China MCC20 Group Corp Ltd filed Critical China MCC20 Group Corp Ltd
Priority to CN201210487910.8A priority Critical patent/CN103835302A/en
Publication of CN103835302A publication Critical patent/CN103835302A/en
Pending legal-status Critical Current

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Abstract

The invention relates to foundation pit construction, in particular to a foundation pit dewatering tube well shut-in construction method. The foundation pit dewatering tube well shut-in construction method for a superficial layer confined water soil layer comprises the steps that during the running phase of a dewatering tube, a dewatering tube well is sleeved with a well shut-in protective tube, the well shut-in protective tube is located at the concrete structural portion and welded with two water stop steel plate rings, and the dewatering tube well runs normally during the period of construction of a cushion layer and a concrete structural base plate; during the well shut-in phase of the dewatering tube well, a well shut-in flange is welded to the top end of the dewatering tube well at the position of the cushion layer after the structural base plate is constructed, a sealing steel plate is welded between the well shut-in protective tube and the dewatering tube well, a water pump inside the dewatering tube well is taken out after welding, a well shut-in blank flange is installed, steel bars are welded inside the well tube according to the arrangement positions of the concrete structural steel bars as needed, and then well shut-in concrete is poured. According to the foundation pit dewatering tube well shut-in construction method for the superficial layer confined water soil layer, the water level of superficial layer confined water can be effectively controlled, and normal construction of the foundation pit concrete structure is ensured.

Description

Shallow-layer artesian water soil layer deep foundation pit precipitation pipe well shut-in well construction method
Technical field
The present invention relates to deep foundation pit construction, relate in particular to deep foundation pit precipitation pipe well shut-in well construction method.
Background technology
Along with the multinomial construction project of China is riverine, launch in sea or soft foundation region, generally all can run into deep pit digging and structure construction, these regions tend to exist shallow-layer artesian water soil layer, shallow-layer artesian water is subject to upstream rivers, the supply of lake and seawater, artesian water head height can exceed the bottom surface absolute altitude of excavation of foundation pit, as larger in the excavation of foundation pit degree of depth, can make the thickness of artesian water top overlying soil reduce, when thickness of earth covering reduces to a certain degree, head upwards pressure can produce the top base plate of foundation pit that splits or destroy by rush of water while exceeding the gravity pressure of overburden layer on confined aquifer, cause foundation ditch " prominent gushing " phenomenon.
Summary of the invention
The present invention is intended to address the aforementioned drawbacks, and a kind of shallow-layer artesian water soil layer deep foundation pit precipitation pipe well shut-in well construction method is provided.The present invention can effectively control shallow-layer artesian water water level, ensures the normal construction of foundation ditch concrete structure.
For addressing the above problem, a kind of shallow-layer artesian water soil layer deep foundation pit precipitation pipe well shut-in well construction method, described construction method comprises the operation of precipitation pipe well and precipitation pipe well two stages of shut-in well, it is characterized in that, the described downcomer operation phase comprises: a shut-in well pillar on precipitation pipe well outer ring sleeve, shut-in well pillar is positioned at concrete structure position welding two circle steel plate for sealing water circles, and during construction cushion coat and concrete structure base plate, precipitation pipe well runs well; The described precipitation pipe well shut-in well stage comprises after structure base slab has been constructed welds shut-in well flange on the top that is being positioned at bed course position precipitation pipe well, welded seal steel plate between shut-in well pillar and precipitation pipe well, after welding, the water pump in precipitation pipe well is taken out, shut-in well blank flange is installed, in well casing, as required by the concrete structure reinforcing bars position welded reinforcement of arranging, then build shut-in well concrete.
Described shallow-layer artesian water soil layer deep foundation pit precipitation pipe well shut-in well construction method, the length of described shut-in well pillar shut-in well pillar is consistent with the gross thickness of concrete cushion and structure.
The present invention makes and easy operating is installed simply.Can effectively control shallow-layer artesian water water level, ensure the normal construction of foundation ditch concrete structure.Processing safety is relatively good.
Detailed description of the invention
Below, in conjunction with detailed description of the invention, the present invention is further illustrated:
The present invention is divided into the operation of precipitation pipe well and precipitation pipe well two stages of shut-in well, a shut-in well pillar on precipitation pipe well outer ring sleeve when operation, the length of shut-in well pillar is consistent with the gross thickness of concrete cushion and structure, shut-in well pillar is positioned at concrete structure position welding two circle steel plate for sealing water circles, during construction cushion coat and concrete structure base plate, precipitation pipe well runs well, so both can ensure the normal construction of concrete structure base plate, can make again downcomer well normally move, make the head height of shallow-layer artesian water in home.Structure base slab is being positioned at the top welding shut-in well flange of bed course position precipitation pipe well after having constructed, welded seal steel plate between shut-in well pillar and precipitation pipe well, after welding, the water pump in precipitation pipe well is taken out, shut-in well blank flange is installed, in well casing as required by the concrete structure reinforcing bars position welded reinforcement of arranging, then build shut-in well concrete, precipitation pipe well quantity, diameter and the degree of depth can be determined according to foundation ditch size and artesian water displacement.

Claims (2)

1. a shallow-layer artesian water soil layer deep foundation pit precipitation pipe well shut-in well construction method, described construction method comprises the operation of precipitation pipe well and precipitation pipe well two stages of shut-in well, it is characterized in that, the described downcomer operation phase comprises: a shut-in well pillar on precipitation pipe well outer ring sleeve, shut-in well pillar is positioned at concrete structure position welding two circle steel plate for sealing water circles, and during construction cushion coat and concrete structure base plate, precipitation pipe well runs well; The described precipitation pipe well shut-in well stage comprises after structure base slab has been constructed welds shut-in well flange on the top that is being positioned at bed course position precipitation pipe well, welded seal steel plate between shut-in well pillar and precipitation pipe well, after welding, the water pump in precipitation pipe well is taken out, shut-in well blank flange is installed, in well casing, as required by the concrete structure reinforcing bars position welded reinforcement of arranging, then build shut-in well concrete.
2. shallow-layer artesian water soil layer deep foundation pit precipitation pipe well shut-in well construction method according to claim 1, is characterized in that, the length of described shut-in well pillar shut-in well pillar is consistent with the gross thickness of concrete cushion and structure.
CN201210487910.8A 2012-11-27 2012-11-27 Deep foundation pit dewatering tube well shut-in construction method for superficial layer confined water soil layer Pending CN103835302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210487910.8A CN103835302A (en) 2012-11-27 2012-11-27 Deep foundation pit dewatering tube well shut-in construction method for superficial layer confined water soil layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210487910.8A CN103835302A (en) 2012-11-27 2012-11-27 Deep foundation pit dewatering tube well shut-in construction method for superficial layer confined water soil layer

Publications (1)

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CN103835302A true CN103835302A (en) 2014-06-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107313437A (en) * 2016-04-27 2017-11-03 上海十三冶建设有限公司 The shut-in well construction method of foundation ditch pressure-bearing dewatering well

Citations (6)

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Publication number Priority date Publication date Assignee Title
CN101148884A (en) * 2007-10-30 2008-03-26 山东天齐置业集团股份有限公司 Waterproof and plugging construction method for precipitation well in foundation pit
CN201172828Y (en) * 2008-03-19 2008-12-31 山西第六建筑有限公司 Well-covering device for dewatering well
CN101691756A (en) * 2009-09-17 2010-04-07 上海市第二市政工程有限公司 Construction method of foundation pit confined water inrushing emergency water-lowering well
CN101768976A (en) * 2009-12-29 2010-07-07 中建城市建设发展有限公司 Base pit dewatering and water saving device and construction method thereof
CN202124865U (en) * 2011-06-22 2012-01-25 南通海洲建设集团有限公司 Quick plugging device for dewatering wellhead of sand-free cement pipe deep well
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101148884A (en) * 2007-10-30 2008-03-26 山东天齐置业集团股份有限公司 Waterproof and plugging construction method for precipitation well in foundation pit
CN201172828Y (en) * 2008-03-19 2008-12-31 山西第六建筑有限公司 Well-covering device for dewatering well
CN101691756A (en) * 2009-09-17 2010-04-07 上海市第二市政工程有限公司 Construction method of foundation pit confined water inrushing emergency water-lowering well
CN101768976A (en) * 2009-12-29 2010-07-07 中建城市建设发展有限公司 Base pit dewatering and water saving device and construction method thereof
CN202124865U (en) * 2011-06-22 2012-01-25 南通海洲建设集团有限公司 Quick plugging device for dewatering wellhead of sand-free cement pipe deep well
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

Non-Patent Citations (2)

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Title
曹友杰: "深基坑工程中管井降水方案的设计与施工", 《深基坑工程中管井降水方案的设计与施工》, no. 24, 31 December 2011 (2011-12-31) *
李鹏举: "深基坑管井降水套管封井方法及施工", 《科技情报开发与经济》, vol. 20, no. 13, 31 May 2010 (2010-05-31) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107313437A (en) * 2016-04-27 2017-11-03 上海十三冶建设有限公司 The shut-in well construction method of foundation ditch pressure-bearing dewatering well

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Application publication date: 20140604

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