Deformable filtering assembly for well point dewatering

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...

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

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