2006•Zhongguo anquan kexue xuebaoRequires access

Study on Safety of Tunnels Structure and Stratum Stability in Construction of Traverse Channel between Two Shield Tunnels

Zhaoping Li, Liu Jun

Abstract

It is difficult to build traverse channel between two shield tunnels. Before the traverse channel is constructed, part of shield tunnel segments must be taken off to easily cause the shield tunnel segment to have superfluous distortion. The 3-D FLAC numerical analysis program is used to analyze the mechanics behavior of traverse channel construction, the shield tunnels segments distortion and surrounding stratum settlement induced by traverse channel construction are especially discussed in detail. The numerical simulation result provides the criteria for the establishment of assistant safety measures in construction.

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Key concepts: Traverse, Shield, Distortion (music), Channel (broadcasting), Stratum, Geotechnical engineering, Engineering, Structural engineering