乌鞘岭隧道F7断层施工力学行为研究  

Analysis of Construction Mechanical Behavior for Wushaoling Tunnel F7 Fault

作　　者：赵旭峰[1] 王春苗[2] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]东南大学土木工程学院,南京210006

出　　处：《地下空间与工程学报》2007年第2期277-282,共6页Chinese Journal of Underground Space and Engineering

摘　　要：结合软岩隧道工程地质和支护特点,对乌鞘岭隧道F7断层软岩施工中的力学性态进行了计算分析。对于施工中出现的软岩挤压大变形问题,从岩体流变学和隧道施工力学的观点与方法出发研究围岩的受力和变形,分析了隧道施工过程的三维时空效应,有机地耦合了作业面的空间效应和软岩时效特性。考虑围岩流变特性,分析了围岩-支护系统变形、受力随时间发展规律,并将计算成果和现场实测数据进行了比较验证,以使力学计算更好地参与到隧道信息化设计和施工中。According to the characteristics of engineering geology and support design for weak rock, the mechanical behaviors were analyzed considering the construction of Wushaoling tunnel F7 weak fault of surrounding rocks. Based on the theory of rocks rhcology and construction mechanics, the stress and displacement of the rock were investigated, and the 3 - D time and space effects of the excavation face was analyzed for explaining the squeezing large displacement during construction. The method effectively coupled the effect of excavation face and the time - depend- ent effect of weak rock. Considering the theology characteristic of weak rocks, the time - dependent stress and displacement of rocks and support system was investigated, and the calculation results were compared with the field data. The present research made the mechanical calculation to be joined effectively with the informatization design and construction of tunnel, and enriched the theory of construction mechanics of tunnel.

关 键 词：软岩隧道 时空效应 流变特性 数值模拟 隧道稳定 

分 类 号：U455[建筑科学—桥梁与隧道工程]