兰渝铁路木寨岭隧道大变形特征及施工控制

摘要

Taking Muzhailing tunnel of Lan-Yu railway under high stress conditions as the research target,the article briefly introduces its de-formation conditions,and classifies the deformation into loose-style deformation and squeezing-style deformation,analyzes major factors influen-cing Muzhailing tunnel deformation,summarizes Muzhailing tunnel deformation processing experience,and finally puts forward integral deforma-tion controlling principles.%以高地应力条件下兰渝铁路木寨岭隧道为研究对象，简要概述了其大变形的情况，并将其表现出来的大变形分成两类：松散型大变形和挤压型大变形，分析了引起木寨岭隧道大变形的主要影响因素，总结了木寨岭隧道施工过程中处理大变形积累的施工经验，并提出了针对大变形控制的总体原则。