摘要
对于大断面软岩隧道施工,常规的台阶法开挖,极易造成拱顶大面积暴露、松动导致坍塌,此类情况均采用双侧壁导坑法设计。双侧壁导坑法开挖断面能够最大限度的保证施工安全,适合应用于大断面软岩隧道。
For large cross-section of soft rock tunnel construction,the conventional excavation by using bench cut method easily caused the a large area exposure,loose,and even collapse.Excavation by using double side drift method can insure construction safety and is suitable for large cross-section of soft rock tunnel.
出处
《价值工程》
2012年第6期73-73,共1页
Value Engineering
关键词
大断面软岩
双侧壁导坑法
隧道
large cross-section soft rock
double side drift method
tunnel
