Railway line protection device and protection method

Abstract

The embodiment of the invention provides a railway line protection device and a railway line protection method, which are used for protecting a railway line above a to-be-built underground passage, and the protection device comprises the following parts: cross beams which are arranged below a railway track in a penetrating manner along a direction vertical to the railway line; top beams extend ina direction parallel to the railway line and that are arranged on two sides of the railway line, wherein the top beams are arranged above the to-be-built underground passage in a spanning manner, positioned below the cross beams and used for supporting the cross beams; longitudinal beams arranged on two sides of the railway line in an extending mode in a direction parallel to the railway line, wherein the longitudinal beams are connected with each cross beam; an overhead rail beam arranged above railway sleepers along a direction parallel to the railway line and connected with the sleepers, and two ends of the overhead rail beam extend to two sides of the to-be-built underground passage. By using the railway line protection device and the protection method provided by the embodiment of theinvention, an existing railway can be protected when pipe jacking or subway tunnel construction are carried out below the existing railway.

Description

technical field [0001] The present application relates to the protection technology for existing railway lines when tunnels are excavated under the existing railway lines, in particular to a railway line protection device and protection method. Background technique [0002] With the rapid development of modern economy, railway lines, urban rail lines and urban roads have all entered a stage of rapid development. There will inevitably be three-dimensional intersections between railway lines, urban rail lines and urban roads. If an urban rail line or urban road to be built is designed under the existing railway, before the construction of the urban rail line or urban road, it is necessary to support and protect the existing railway to avoid soil excavation under the existing railway line. As a result, the subsidence of existing railway lines will occur, which will affect the safety of existing railway operations. [0003] At present, the protection of existing railways is a ...

AI Technical Summary

Problems solved by technology

[0004] However, when constructing pipe jacking or subway tunnels below the existing railway, the soil layer at the top of the pipe jacking or subway tunnels is not enough to provide stable support for the transverse beams, and effective protection cannot be achieved. Therefore, the above existing The protection method is not suitable for the protection of the existing railway when pipe jacking or subway tunnel construction is carried out under the existing railway, and there is no other effective protection method at present

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