双侧壁导坑法开挖大断面软岩隧道施工技术  

Construction Technology of Large Cross-section Soft Rock Tunnel Excavation by Using Double Side Drift Method

作　　者：田执祥 

机构地区：[1]中铁十四局集团三公司,兖州272100

出　　处：《价值工程》2012年第6期73-73,共1页Value Engineering

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.

关 键 词：大断面软岩 双侧壁导坑法 隧道 

分 类 号：U45[建筑科学—桥梁与隧道工程]