Underground diaphragm wall with pit face having water level lowering function

Abstract

The invention discloses an underground diaphragm wall with a pit face having the water level lowering function. The underground diaphragm wall comprises a reinforcement cage, a circular pipe and a water storage tank, wherein the circular pipe is vertically arranged and is embedded in the reinforcement cage; the top of the circular pipe stretches out of the top of the reinforcement cage; the waterstorage tank is fixed at the lower part of the pit face of the reinforcement cage and is connected with the bottom of the circular pipe; the water storage tank and the circular pipe constitute a closed communicating system; a plurality of water inlets are formed in the earth surface of the water storage tank; and the reinforcement cage is placed in a groove and forms a cast-in-place reinforced concrete wall through the concrete pouring manner. The water storage tank is prefabricated and embedded at the lower part of the pit face of the underground diaphragm wall in advance; and after construction, the water storage tank (dewatering well) can come into use, so that a traditional dewatering well does not need to be arranged on the inner side of foundation pit engineering, and the construction period and the cost of the dewatering well are greatly shortened and reduced.

Description

technical field [0001] The invention relates to the field of underground diaphragm walls used in construction engineering, in particular to an underground diaphragm wall whose face facing a pit also has the function of dewatering. Background technique [0002] With the rapid development of urban underground space development in my country, large-scale subway systems, high-rise building basements, underground stations, and sponge city construction are all facing deep foundation pit projects. Underground diaphragm walls have become common structures for the development of deep urban underground spaces. It is mainly reflected in the fact that the underground diaphragm wall can be used as both a temporary support structure and a permanent structure. These advantages have been proven in the development of underground spaces in large cities. The underground diaphragm wall has the functions of water interception, seepage prevention, load bearing, water retaining, etc. It has good in...

AI Technical Summary

Problems solved by technology

A large-scale foundation pit project often needs to drill a large number of dewatering wells, the overall cost is high, and the construction site is occupied

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