摘要
乌鞘岭隧道穿越F7断层时,隧道埋深大,断层岩体破碎,岩体完整性差,围岩自稳能力弱,由于受挤压影响,手捏呈砂砾状、粉末状,开挖后变形长期不收敛,不能满足《铁路隧道设计规范》关于二次衬砌施作时机的规定,所以对已施工完毕的二次衬砌段进行结构安全度分析。
Wushaoling Tunnel has a large buried depth when going through F7 fault zone, and the rock is very fragmented, lacking of integrity and stability. Therefore, it is necessary to conduct an analysis of the structure safety of the secondary lining section.
出处
《铁道建筑技术》
2004年第z1期31-34,共4页
Railway Construction Technology
关键词
乌鞘岭隧道
断层
二次衬砌
结构安全度
Super longTunnel, fault zone, secondary lining, structure safety
