Construction method for shield machine passing through air shaft

Abstract

The invention discloses a construction method for a shield machine passing through an air shaft. The work of hoisting in an early stage and dismantling in a later stage of a conventional bracket is eliminated, the construction period is shortened, the construction cost is reduced, half-ring pipe segments are assembled between two sections of integral ring pipe segments, and the number of two sections of the integral ring pipe segments and the number of the intermediate half-ring pipe segments are determined according to the specific size of the intermediate air shaft. Continuous assembly of the half-ring pipe segments can meet the stress requirements, costs are effectively saved, the construction progress is speeded up, and installation and disassembly in the later stage are facilitated. The two ends of each support member are separately supported between the two sections of the integral ring pipe segments, and are beneficial to ensuring the continuity and stability of the force transmission, the risk of tunneling of the shield machine is reduced, strong guarantee is provided for secondary originating of the shield machine after the shield machine passes through the air shaft, meanwhile, subsequent dismantling work is facilitated, the construction method is widely used in intermediate air shafts of various sizes and especially suitable for large-sized intermediate air shafts such as the air shafts with the length being 30-50m, and the shield machine can pass through the air shaft quickly and safely.

Description

Technical field [0001] The invention relates to the technical field of subway construction, in particular to a construction method for a shield machine to pass through a well. Background technique [0002] With the gradual development of my country's economy, subway construction has become a symbol of urban modernization and civilization, expanding space for urban development and accelerating the pace of urban development. Subway shield is an important construction technology in urban subway construction. With the gradual development of urban subways, subway tunnels are getting longer and longer. In order to ensure ventilation conditions, it is often necessary to add an intermediate air shaft in the middle of the tunnel. , Fast and economical passage through the intermediate air shaft has also become a common problem at present. [0003] In the prior art, the shield tunneling scheme usually includes: installing the reaction frame after integral hoisting and starting again, assembl...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, such as the complex construction steps of the shield machine passing through the well, and the inability to have both fast and convenient installation, stable force, high safety, and convenient hoisting and dismantling in the later stage, and to provide a shield machine passing through the well. well construction method

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