软弱围岩浅埋暗挖法大跨度隧道施工技术

The construction of a large span tunnel with shallow-buried tunnelling method in soft rock

结合工程实例 ,介绍软弱围岩浅埋暗挖大跨度隧道施工采用注浆大管棚超前支护 ,双侧壁导坑工法分步开挖、衬砌的施工方法。

Based on construction of a large span tunnel with shallow\|buried tunneling method in soft rock, the paper introduces such construction methods as grouting pipe\|shed advance support, double side wall heading excavation, and lining.