宜万铁路云雾山隧道溶腔爆破放水技术探讨

Abstract The Yunwushan tunnel is one of the 8 risk I tunnels on Yichang-Wanzhou railway and in the construction several largecavities were revealed. Taking the " 525" cavity with high-pressure and rich water in the construction of Yunwushan tunnel for example theproject of blasting & water -drainage was confirmed to deal with it combining the concerned engineering geology and hydrogeologyconditions the geologic forecast and draining test. The construction techniques for the project to deal with high-pressure and rich-watercavities are also summarized and discussed hoping to provide reference for constructions of the similar tunnels.院云雾山隧道 溶腔 爆破放水Key words Yunwushan tunnel cavities blasting & water-drainage中图分类号院U455.4 文献标识码院A 文章编号院1006-4311（2014）15-0149-031