乌鞘岭特长隧道F_7断层正洞二次衬砌安全性评价研究  

Study on the Second Lining Safety of Wushaoling Super Long Tunnel in F_7 Fault

作　　者：邹晋华[1] 

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《江西理工大学学报》2007年第4期54-57,共4页Journal of Jiangxi University of Science and Technology

摘　　要：乌鞘岭隧道穿越F7断层时,由于隧道埋深大、断层岩体破碎、围岩自稳能力弱等原因,开挖后产生较大变形,且长时间不能收敛,故在此条件下施做的二次衬砌结构的安全性也值得进一步的探讨.通过现场监测手段,对实测数据进行回归分析处理,并结合数值模拟计算分析,对已施工的二次衬砌结构安全性进行了全面的评价,结果认为,目前阶段正洞二次衬砌结构的设计参数是可行和安全的,服务年限内隧道仰拱处则需采取进一步的加强措施.The displacement of the rock wall is larger and not convergence in a long time after excavating in F7 fault of the Wushaoling tunnel because the rock mass is weak and soft with complicated high earth pressure. So the safety of the second lining constructed in that condition needs further discussion. This paper evaluates the second lining safety completely through analyzing by managing the values, using FEM and in-suit surveying.The result indicates that the designing parameters are feasible and safe at present and the tunnel bottom needs to reinforce at the servece time.

关 键 词：乌鞘岭隧道 F7断层 二次衬砌 安全性评价 

分 类 号：U458[建筑科学—桥梁与隧道工程]