Curtain sand gushing treatment method and curtain sand gushing treatment pipe

Abstract

The invention provides a curtain sand inrush treatment method and a curtain sand inrush treatment pipe. The curtain sand inrush treatment method comprises the following steps that (1) construction materials, machines and tools are prepared; (2) inrush sand of a sand inrush subsidence area is removed, and a main curtain sand inrush treatment pipe is mounted; (3) the sand inrush subsidence area is filled with dense screens and felt blankets; (4) fixing anchor bolts are mounted on supporting piles, meshes are hung, and concrete is sprayed for sealing; (5) an observation-pressure relief pipe is mounted; and (6) the sand inrush subsidence area is grouted. Through the curtain sand inrush treatment method, sand inrush and water inrush are rapidly treated in time, foundation pits do not need to bebackfilled massively, outside sites do not need to be occupied, and the influence on foundation pit overall progress is small; the materials, the machines and the tools which are adopted for treatment are common on foundation pit supporting sites, and the method is economical; lots of soil does not need to be conveyed inside and outside for backfilling, mud pollution is avoided, and the method has the environmental protection property; and mud inlet ends / water outlet ends of the main curtain sand inrush treatment pipe and an auxiliary curtain sand inrush treatment pipe which are adopted in the treatment process are wrapped with the dense screens, inrush sand can be prevented from entering pipe body through holes, and blockage of the through holes and pipe bodies can be reduced as much aspossible.

Description

technical field [0001] The invention relates to curtain sand gushing treatment technology, in particular to a curtain sand gushing treatment method and a curtain sand gushing treatment pipe. Background technique [0002] In the process of urban housing construction and infrastructure construction, deep foundation pits rich in groundwater and sandy layers are often encountered. Due to the complex surrounding environment, they are generally close to roads, underground pipelines, and buildings. The method of open drainage or deep well precipitation cannot be used directly. , so as not to cause surrounding settlement and affect the normal use of the surrounding area. Such foundation pits generally adopt the method of water-stop curtain, and one of the most commonly used methods is cement-soil curtain, which can also be divided into rotary spray pile curtain, mixing pile curtain, etc. Due to the high density of the sand layer, the mixing process is relatively difficult , the jet...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a curtain sand inrush treatment method and a curtain sand influx treatment pipe, which can systematically solve the problem of a large amount of sand influx in the curtain of a foundation pit in a local sudden linear shape, without the need for a large amount of backfilling in the foundation pit, and the process is simple and easy to operate, economical and environmentally friendly

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