摘要
由于贵州地形地貌制约,在修建高等级道路过程中,不可避免需要修建隧道,而其喀斯特地质环境特点也同时增加隧道建设的难度。依托贵州省某高等级市政隧道岩溶塌方冒顶处置实例,通过现场调查、分析地质资料并结合高密度电法物探测试结果,分析隧道岩溶发育情况及塌方冒顶原因,并提出反压回填后采取超前管棚及小导管注浆并加强初期支护,能有效解决隧道岩溶塌方冒顶问题。
Due to the constraints of topography and geomorphology in Guizhou,it is inevitable to build tunnels in the process of building high-grade roads,and the characteristics of karst geological environment also increase the difficulty of tunnel construction.In this paper,based on a high-grade municipal tunnel in Guizhou province karst collapse roof fall treatment example.Through the field investigation,analysis of geological data and combined with the results of high-density electrical geophysical prospecting,this paper analyzes the development of tunnel karst and the causes of collapse and roof fall,and puts forward that the problem of collapse and roof fall can be effectively solved by adopting advance pipe shed and small pipe grouting and strengthening the initial support after back pressure backfill.
作者
胡兵华
Hu Binghua(Power China Guiyang Engineering Corporation Limited,Guiyang 550081,China)
出处
《山西建筑》
2021年第24期116-118,共3页
Shanxi Architecture
关键词
隧道
岩溶区
塌方冒顶
处理技术
tunnel
karst area
collapse and roof fall
treatment technology
