Method for constructing crossover section tunnel combined with shield tunnel

Abstract

The invention relates to a method for constructing a crossover section tunnel combined with a shield tunnel. The method comprises the following steps that part of soil around the shield tunnel is excavated according to the design route of the crossover section tunnel, and a crossover channel is formed; part of the shield tunnel located in the crossover channel is dismantled to form an opening, the shield tunnel is communicated with the crossover channel through the opening, and part of the shield tunnel is exposed in the crossover channel to form a connecting end; and a crossover structure is constructed on the inner wall face of the crossover channel, and the crossover structure is fixedly connected with the outer side wall and the end face of the connecting end. According to the method, the section and span of the excavated crossover channel can be reduced, the construction risk is reduced, the construction amount is reduced, the construction progress is accelerated, and the construction cost is saved.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a method for constructing a cross-section tunnel combined with a shield tunnel. Background technique [0002] At present, the shield method is often used in the construction of subway projects. The tunnels in the crossing section are usually constructed by the open cut method or the shallow buried buried excavation method, and the crossing track is converted to the main line track. The open cut construction of the crossing section tunnel refers to the crossing section. The station is combined with open and cut. This construction method occupies a large area and has a great impact on ground transportation and the surrounding environment. The shallow burial and underground excavation construction of the crossing section tunnel refers to the construction of the crossing section tunnel using the full-section mining method. Usually, the crossing section tunnel with a large...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art, and provide a method for constructing a line-crossing tunnel combined with a shield tunnel, so as to solve the problem that the existing cross-section tunnel has a large construction risk and a large amount of construction due to its large cross-section and large span. Large and slow construction progress

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