小半径曲线地铁盾构隧道施工技术研究

Study on the Construction Technology of Shield Tunnel in Small Radius Curved Metro

盾构沿小半径曲线掘进,是地铁施工中的一个主要难点,提高地铁隧道的质量和精度,可以通过正确的管片选型来进行。论文以成都地铁4号线凤南区间为主,通过分析右线盾构穿越小曲线的施工方案,从而为今后的地铁盾构设计起到一定的借鉴作用。

Shield tunneling along small radius curve is a major difficulty in metro construction.To improve the quality and accuracy of metro tunnels,it can be done through correct segment selection.In this paper,the Fengnan section of Chengdu metro line 4 is taken as the main part,and the construction scheme of right-line shield tunneling through small curve is analyzed.The design of metro shield after that can be used for reference.