Construction method for pipe gallery to down-pass river channel

Abstract

The invention relates to the technical field of pipe gallery construction, and discloses a construction method for a pipe gallery to down-pass a river channel. The construction method comprises the following steps that S1, steel sheet piles are inserted from one side of the river channel to the opposite side to form a cofferdam until the end part of the cofferdam reaches a set position; S2, waterin the cofferdam is discharged, an installation groove is excavated and formed in the cofferdam, and the pipe gallery is installed in the installation groove until the pipe gallery is close to the endpart of the cofferdam; S3, a waterproof wall is arranged at the end part of the pipe gallery, a transfer weir is formed at the cofferdam through separation, moreover, the end part of the pipe gallery1 is located in the transfer weir, and the steel sheet piles not involved in the transfer weir are removed; S4: the steel sheet piles are inserted from the transfer weir to the opposite side to formthe next cofferdam until the end part of the next cofferdam is located at the next set position, the steel sheet piles at the end part of the last cofferdam are removed, and the step 2 and the step 3are performed; and S5, the step 4 is repeated until the pipe gallery is installed to the opposite side. According to the construction method, the problems of poor applicability of a flow division method, environmental damage of a phased soil cofferdam method and high cost of a pipe jacking construction method are effectively solved.

Description

technical field [0001] The invention relates to the technical field of pipe gallery construction, in particular to a construction method for a pipe gallery to pass through a river. Background technique [0002] Pipe gallery, that is, the corridor of pipelines. Comprehensive pipe gallery is the comprehensive corridor of underground urban pipelines, that is, to build a tunnel space underground in the city, integrating various engineering pipelines such as power, communication, gas, heating, water supply and drainage, etc., with special inspection ports and hoisting ports And monitoring system, the implementation of unified planning, unified design, unified construction and management, is an important infrastructure and "lifeline" to ensure the operation of the city, which is convenient for maintenance and beautifies the city. [0003] The traditional methods include pipe jacking construction method, segmented soil cofferdam or soil bag cofferdam method, diversion method, etc....

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Problems solved by technology

[0004] In view of the defects existing in the prior art, the purpose of the present invention is to provide a construction method for pipe gallery crossing the river, which can effectively solve the poor applicability of the diversion method, the damage to the environment by the segmental soil cofferdam method and the high cost of the pipe jacking construction method The problem

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