Deformable filtering assembly for well point dewatering

A technology for filtering components and well point precipitation, which is applied in the fields of filtration and separation, fixed filter element filters, chemical instruments and methods, etc., can solve the problems of easy silting and clogging of filter pipes, unavoidable silting and clogging, and unsuccessful precipitation, etc. The well point is blocked, the construction operation is simple, and it is beneficial to the discharge effect.

Active Publication Date: 2015-06-03
广东华坤建设集团有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

However, this kind of construction method is cumbersome to operate in actual construction, and the filter pipe is extremely easy to accumulate and block, resulting in the well point being blocked and becoming a dead well.
If the precipitation is not successful, it will easily lead to major engineering accidents, such as the foundation pit collapse accidents frequently reported in China are related to this
[0004] Among the existing construction methods, there is also a construction method that uses sand and gravel filler in the borehole as a filter layer, but this method also has the disadvantage of cumbersome construction, and it also cannot avoid silting and clogging, resulting in well point blocking flaw in being a dead well

Method used

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  • Deformable filtering assembly for well point dewatering
  • Deformable filtering assembly for well point dewatering

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] The construction method of dewatering at the well point of a deep foundation pit and its deformable filter components: including

[0026] (1) According to the design drawing of the well point dewatering, measure and set out the line at the construction site to determine the drilling position, trench position and horizontal elevation of the well point;

[0027] (2) Use drilling machinery to drill a well hole that meets the design depth at the determined drilling position;

[0028] (3) Excavating trenches for laying well point pipelines;

[0029] (4) Carry out pipeline laying in the wellbore; Specifically, withdraw the drill bit of the drilling machine from the wellbore, put the wellpoint pipe with a deformable tubular filter assembly at the bottom into the wellbore, and fix the bottom of the wellpoint pipe to the design depth;

[0030] (5) expanding the deformable tubular filter assembly; expanding the deformable tubular filter assembly so that it clings to the wall of...

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Abstract

The invention provides a deformable filtering assembly for well point dewatering. The deformable filtering assembly comprises a base pipe, a filtering layer and a sleeve, wherein the base pipe is a pipe-shaped part, a plurality of rows of strip cracks are formed in the wall of the base pipe along the extending direction, the strip cracks of the adjacent rows are mutually staggered, the filtering layer covers the base pipe and forms an approximate pipe shape, the sleeve covers the exterior of the pipe-shaped filtering layer, a plurality of rows of diamond holes are formed in the wall of the sleeve along the extending direction of the base pipe, and the diamond holes of the adjacent rows are mutually staggered.

Description

technical field [0001] The invention relates to a component used in the construction method of foundation pit dewatering support used in building construction, especially a filter component used in the construction method of well point dewatering Background technique [0002] With the development of modern society, the use functions of buildings continue to expand, especially in big cities, new buildings use more and more underground space. The basements of large buildings usually reach several floors, and the depth of foundation pits is even higher. From tens of meters to tens of meters. Therefore, new requirements are put forward for the method of foundation pit construction. [0003] A kind of well point dewatering construction technology in the prior art generally adopts ordinary geological drilling rigs to drill holes through the mud retaining wall, installs filter pipes to form tube wells, and then uses high-pressure water jet flushing in the filter pipes to destroy t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/10B01D35/02B01D29/33
Inventor 陈卓杰
Owner 广东华坤建设集团有限公司
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