Construction method for earth pressure balance shield to pass through large-diameter sewage main pipe underground

Abstract

The invention relates to the technical field of shield construction, in particular to a construction method for an earth pressure balance shield to pass through a large-diameter sewage main pipe underground, and is used for solving the problems of high construction difficulty, high risk and great casualties and economic loss easily caused by improper control when the shield passes through the large-diameter sewage main pipe underground in the prior art. The construction method comprises the following steps that 1, engineering investigation is carried out, an underwater color television and a geological radar are adopted; 2, the mutual influence of a tunnel and a sewage pipe is predicted, deformation analysis is carried out by adopting a stratum I structure model; 3, construction preparation before underneath pass is carried out, comprehensive statistical analysis is carried out by adopting a 60m experimental section; and 4, shield underneath pass tunneling is carried out, and stratum settlement is controlled through a clay shock method. According to the construction method for the earth pressure balance shield to pass through the large-diameter sewage main pipe underground, the construction difficulty and the corresponding risk can be effectively reduced through engineering investigation, prediction of the mutual influence of the tunnel and the sewage pipe, construction preparation before underneath pass and shield underneath pass tunneling, and therefore casualties and economic losses can be reduced.

Description

technical field [0001] The invention relates to the technical field of shield construction, in particular to an ignition system for a small turbojet engine with afterburner, and more specifically to a construction method for an earth pressure balance shield passing through a large-diameter sewage main pipe. Background technique [0002] The subway is a fast, large-capacity, electric traction rail transit built in the city. The train runs on a fully enclosed line. The lines located in the central urban area are basically located in underground tunnels, and the lines outside the central urban area are generally located in viaducts. Or on the ground, the subway is an urban rail transit system that covers various underground and above-ground right-of-way exclusive, high-density, and high-capacity urban rail transit systems in urban areas. Tunnels are inevitable in the subway lines. [0003] In the prior art, the shield tunneling method is usually used in the construction of subw...

AI Technical Summary

Problems solved by technology

[0005] Based on the above problems, the object of the present invention is to provide a construction method for the earth pressure balance shield to pass through the large-diameter sewage main pipe, which is used to solve the difficulty and risk of construction when the shield tunnel passes through the large-diameter sewage main pipe in the prior art. High, improper control can easily cause heavy casualties and economic losses

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