A construction method for sealing water at the bottom of a station and a structure for sealing water at the bottom of the station

Abstract

The invention discloses a station-bottom water-sealing construction method and a station-bottom water-sealing structure. The construction method comprises the steps that pre-construction preparation of a working face channel is conducted, construction of the working face channel is conducted, and construction of a transverse both-wing waterproof curtain is conducted. The station-bottom water-sealing structure comprises the working face channel and the transverse both-wing waterproof curtain located in the working face channel and conducting side-directional construction in the middle of the position below a station base plate, and the transverse both-wing waterproof curtain forms an inverted triangle type curtain structure. Steel ribs are inserted into a jet grouting pile of the transverse both-wing waterproof curtain to improve the shearing strength and the anti-floating capacity of the structure. According to the station-bottom water-sealing structure, a large amount of rainfall in the developing process of an underground space is avoided, the water resources are protected, the electric power is saved, and going green and environmental protection are achieved. The station-bottom water-sealing construction method is simple, the controllability is strong, the construction cost is low, and the problem of bottom water-stopping of large-section underground space development in a water-rich stratum is solved.

Description

technical field [0001] The invention relates to the field of underground space construction, in particular to a construction method for sealing water at the bottom of a subway station and a structure for sealing water at the bottom. Background technique [0002] As the traffic becomes more and more congested, more and more underground spaces are built and deeper. When the subway station to be built is in a water-rich or confined water environment, precipitation operations are routinely used to ensure excavation. However, a large amount of precipitation is likely to cause settlement deformation of the surface and surrounding structures and excessive exploitation of groundwater resources. With the improvement of environmental awareness, some local governments have begun to impose strict restrictions on groundwater exploitation. In order to protect groundwater resources, various localities have formulated laws and regulations to strictly control overexploitation of groundwate...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a water sealing construction method at the bottom of the station and a water sealing structure at the bottom of the station. It is necessary to solve the problem that the water sealing structure at the bottom of the existing subway station is expensive and occupies the surface space. The effect is getting worse and worse Technical problems

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