Well sealing waterproof construction method for dewatering well

A construction method and technology for dewatering wells, applied in infrastructure engineering, protective devices, buildings, etc., can solve problems such as failure to seal, hidden dangers in plugging quality, and inability to fully guarantee the bottom plate, etc., to achieve enhanced strength, tight well sealing system, The effect of simple structure

Inactive Publication Date: 2012-11-28
天津住宅集团建设工程总承包有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent only welds the water-stop plate on the outside of the steel pipe, and cannot fully guarantee the water-stop problem connected with the bottom plate
[0005] 2. The Chinese patent with the application number CN200820076584.0 discloses a "drainage well sealing device". When the groundwater pressure or water inflow is large, the existing method of sealing the precipitation well may cause hidden dangers in the quality of the plugging or the problem that it cannot be plugged
Therefore, this patent is only suitable for leaking caused by slight cracks in the water-stop curtain, and the waterproof layer of the adjacent water collection well is damaged.

Method used

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  • Well sealing waterproof construction method for dewatering well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) carry out the construction of base cushion 6 around the dewatering well; (2) bury the steel sleeve 1 that the dewatering well sealing in the foundation pit is used, and the outer wall of the steel sleeve is provided with a water-stop steel plate 3; (3 ) Lay waterproof coiled material 7 on the base cushion 6 and roll the waterproof coiled material 7 along the outer wall of the steel sleeve 1 to the bottom of the waterproof steel plate 3, and then lay the waterproof coiled material 7 on the base cushion 6 Pour fine stone concrete protective layer 8 on the waterproof membrane layer 7; (4) dock two semicircular waterproof boards 15 on the outer wall of the waterproof membrane located on the outer wall of the steel sleeve 1 as shown in Figure 7-1 (5) Use copper bars 9 to tighten the entire waterproof board 15; (6) Inject and seal at the joint position where the two semicircular waterproof boards 15 are docked and the intersection of the top of the entire waterproof board ...

Embodiment 2

[0040] (1) carry out the construction of base cushion 6 around the dewatering well; (2) bury the steel sleeve 1 that the dewatering well sealing in the foundation pit is used, and the outer wall of the steel sleeve is provided with a water-stop steel plate 3; (3 ) Lay waterproof coiled material 7 on the base cushion 6 and roll the waterproof coiled material 7 along the outer wall of the steel sleeve 1 to the bottom of the waterproof steel plate 3, and then lay the waterproof coiled material 7 on the base cushion 6 A protective layer of fine stone concrete 8 is poured on the waterproof coiled material layer 7; (4) two semicircular waterproof boards 15 are docked and clamped on the outer wall of the waterproof coiled material located on the outer wall of the steel sleeve 1; (5) copper strips and 9 hoops are used Tighten the entire waterproof board 15; the copper bar 9 is hooped at the middle position of the outer wall of the waterproof board 15 formed by the two semicircles. (6)...

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Abstract

The invention discloses a well sealing waterproof construction method for a dewatering well. The method comprises the following steps of: (1) constructing a foundation bed on the surrounding of the dewatering well; (2) embedding a steel sleeve for sealing the dewatering well in a foundation pit; (3) laying a waterproof roll material on the foundation bed, and then pouring a fine aggregate concrete protective layer on the waterproof roll material; (4) clamping a waterproof plate on the outer wall of the waterproof roll material on the outer wall of the steel sleeve in an abutted way; (5) clamping the waterproof plate by using a copper strip; (6) injecting a sealing adhesive to the waterproof plate; (7) pouring bottom plate concrete to the fine aggregate concrete protective layer; (8) pumping water; (9) embedding a sealing plate in the steel sleeve; (10) after filling gravels into a filling pipe, injecting a cement paste into a cement paste injection pipe, and stopping the injection of the cement paste until the paste in an overflow pipe flows out; and (11) pouring concrete into the steel sleeve above the sealing plate. Through the adoption of the well sealing waterproof construction method disclosed by the invention, a waterproof treatment problem at the connection of the dewatering well in the foundation pit and the foundation bottom plate in the whole dewatering well sealing waterproof system is solved.

Description

technical field [0001] The invention relates to a construction method for a dewatering well, in particular to a construction method for sealing and waterproofing a dewatering well. Background technique [0002] With the development of urban construction, the depth of the basement of the building continues to increase, and the foundation pit is getting deeper and deeper. The requirements for the precipitation of the foundation pit are also getting higher and higher. If the water level falls below the requirement, the foundation pit is prone to danger. Construction of deep foundation pits often requires excavation into aquifers below the groundwater table. Therefore, before excavation, the groundwater level must be lowered to below the slope surface and the bottom of the pit to prevent the slope from collapsing and gushing, and to ensure that the excavation is carried out under dry and hard working conditions during the construction process. The dewatering wells installed in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D31/02E02D19/10
Inventor 冯云李金华刁晓翔王辉郭君
Owner 天津住宅集团建设工程总承包有限公司
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