First tunnel then station continuous construction shield station entering method

Abstract

The invention discloses a first tunnel then station continuous construction shield station entering method. The first tunnel then station continuous construction shield station entering method comprises the following steps that a, in a station construction position, the arrangement distance between a station building envelope and a central stand column is controlled, and therefore a shield excavation space used for allowing a shield tunneling machine to pass through the station is formed; b, reinforcement process is conducted on the end head of the station, reinforcement is conducted the building envelope on tunnel shield excavation path of the shield tunneling machine, and grouting pipelines for preventing water leakage are reserved in the building envelope; c, the tunnel shield excavation path is made to be connected and communicated with the shield excavation space, and then a continuous tunnel shield excavation path form a tunnel to the station is formed; d, the shield excavation is conducted on the continuous tunnel shield excavation path. The first tunnel then station continuous construction shield station entering method aims at designing an excavation station passing method for the requirement that the station can not provide conditions on time when the shield tunneling machine has to pass the station, the shield tunneling machine can pass the station safely and successfully, the water prevention problem of the connecting joint of the station and the tunnel is solved, and the progress and the safety of the project are guaranteed.

Description

technical field [0001] The invention relates to the technical field of subway tunnel shield construction, in particular to a method for continuously constructing shield tunnels first and then stations. Background technique [0002] In the construction of subway tunnels, tunnel sections and station sections appear alternately, resulting in the construction of shield tunnels often involving station passing. Conventional shield tunneling generally adopts two methods of dismantling, hoisting and translation, both of which require the completion of the bottom plate of the station before construction. However, affected by conditions such as land acquisition, demolition or pipeline relocation, the construction progress of subway stations that require shield tunneling often lags behind, and it is impossible to provide conventional shield tunnel transit conditions on schedule. Affect the shield tunneling construction period, which makes it difficult to guarantee the total constructi...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method of entering the station with continuous construction of the tunnel first and then the station, so as to solve the technical problem that the delay of the construction period of the station in the construction of the existing subway tunnel affects the construction of the shield

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