宜万铁路云雾山隧道溶腔爆破放水技术探讨

摘要

The Yunwushan tunnel is one of the 8 risk I tunnels on Yichang-Wanzhou railway and in the construction, several large cavities were revealed. Taking the"525"cavity with high-pressure and rich water in the construction of Yunwushan tunnel for example, the project of blasting & water-drainage was confirmed to deal with it, combining the concerned engineering geology and hydrogeology conditions, the geologic forecast and draining test. The construction techniques for the project to deal with high-pressure and rich-water cavities are also summarized and discussed, hoping to provide reference for constructions of the similar tunnels.%云雾山隧道是宜万铁路八座Ⅰ级风险隧道之一，隧道在施工过程中揭示多处大规模溶腔。本文以云雾山隧道高压富水“525”溶腔施工为例，结合相关工程地质水文、超前地质预报和放水试验等方面，确定用爆破放水的方案来处理该溶腔。并对该方案处理隧道高压富水溶腔的施工技术进行了总结和探讨，希望能为类似隧道工程施工提供借鉴。