泥页岩地质条件下主洞与车行横洞交叉段施工技术研究  

Study on the Construction Technology for the Intersection between Main Tunnel and Traversing Tunnel under Mud-shale Geological Conditions

作　　者：郝建军 

机构地区：[1]和榆高速公路建设管理处,山西左权032600

出　　处：《科技情报开发与经济》2012年第24期134-135,共2页Sci-Tech Information Development & Economy

摘　　要：通过对云山隧道出口泥页岩地层中车行横洞与主洞交叉口段施工方案的研究,提出了支撑替换方案,成功地解决了在围岩较差的情况下由于二维框式门架支撑体系悬臂过长导致支撑替换后拱架失稳的难题。Through the study on the construction scheme for the intersection between main tunnel and traversing tunnel in mud-shale formation at Yunshan Tunnel＇s exit, this paper puts forward a support replacement scheme, which has successfully solved the problem of arch frame＇s instability after support replacement caused by overlong cantilever of support system of two-dimensional gated-type frame under poorer surrounding rock condition.

关 键 词：主洞 车行横洞 交叉段 施工技术 泥页岩地质条件 

分 类 号：U455[建筑科学—桥梁与隧道工程]