Underground excavation construction method for constructing subway station

Abstract

The invention discloses an underground excavation construction method for constructing a subway station. The underground excavation construction method is characterized by including the following steps of S1, performing construction on the upper side of a soil body of a to-be-excavated area through a pipe roofing method to form an upper pipe roofing support; S2, performing primary metro jet systemconstruction on the two sides and the bottom of the soil body of the to-be-excavated area for pile driving and hole distributing; S3, dividing the to-be-excavated area into a plurality of excavationsections, and performing construction to drive pipe roofing pipes and freezing pipes into soil bodies between every two adjacent excavation sections and soil bodies on the two sides and the bottom ofthe to-be-excavated area through a pipe roofing method and a freezing method to form a freezing wall; and S4, performing excavating and supporting on each excavation section. By means of the construction method, the problem that the underground excavation construction cannot be applied under the conditions of shallow soil coverage and large structural section when the subway station is constructedin the prior art can be solved.

Description

technical field [0001] The invention relates to the field of subway station engineering construction, in particular to an underground excavation construction method for constructing a subway station. Background technique [0002] The selection of the construction method of the subway station should not only meet the use function of the subway project itself, but also meet the requirements of rational development and utilization of the effective space on the ground and underground, and consider the adverse effects of the construction on the surrounding environment. Whether the choice of the construction method is reasonable or not has a great impact on the buried depth of the line, the structure type of the station, the construction period and the cost of civil engineering, etc., and directly affects the social, economic and environmental benefits of the entire line. [0003] The construction method of existing subway station generally has three kinds: 1, open cut method, ref...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of submerged construction method for constructing subway stations, and solve the problem that the submerged excavation method construction in the prior art cannot be applied when the covering soil is relatively shallow and the structural section is large when constructing a subway station.

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