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软弱围岩大变形是隧道施工中常见且影响极为恶劣的一类工程问题。基于武都西隧道的施工过程,归纳了炭质片岩隧道软弱围岩变形对隧道支护结构造成的影响,分析了隧道支护结构变形的原因,针对隧道支护结构的大变形从施工支护和初期支护两个方面提出了处治措施,对比通过监控结果,分析了支护处治措施的实施效果,为类似隧道大变形的处治提供参考。
Large deformation of weak surrounding rock tunnel construction is a common and extremely bad impact on a class of engineering problems. Based on the construction process of the Wudu West Tunnel, the influence of the deformation of the weak surrounding rock in the carbonaceous schist tunnel on the tunnel supporting structure is summarized. The reason of the deformation of the tunnel supporting structure is analyzed. According to the deformation of the tunnel supporting structure, And the initial support two aspects of the proposed treatment measures, compared with the monitoring results, analysis of the implementation of the support measures for the treatment of tunnel deformation for similar treatment provide a reference.