释能降压工法在深埋岩溶富水隧道中的应用  

Application of the Energy Releasing and Pressure Reducing Technology in the Deep Tunnels of Water-soaked Karst Area

作　　者：赵梦晨[1] 童刚强[1] 

机构地区：[1]天津市地下铁道集团有限公司,天津300171

出　　处：《水利与建筑工程学报》2015年第3期183-187,共5页Journal of Water Resources and Architectural Engineering

摘　　要：云雾山隧道是宜万铁路八座一级风险隧道之一,岩溶发育强烈,溶洞、暗河、漏斗及岩溶洼地等岩溶现象多见,施工风险极高。采用释能降压工法释放溶腔所存储的能量,降低水压力对隧道的稳定性影响,大大减小了施工风险。针对云雾山隧道的特点,利用地质预报技术锁定溶腔边界,制定专项精确爆破揭示方案,通过水量水压监测分析发现,溶腔介质的高压风险得到解除,达到了预期效果。Yunwushan tunnel is one of the eight primary risk tunnels of Yi -Wan Railway ,there is a fast growth of karst development with lots of karst caves ,rivers ,funnels and pit holes ,all of which presents a high construction risk .Here , energy releasing and pressure reducing method was adopted to reduce the influence of the stored energy and the water pressure in the karst cavities on the tunnel stability ,which greatly diminished the construction risk .In the light of the characteristics of the Yunwushan tunnel ,the geological forecast technology was used to lock the boundaries of the karst cavities ,in order to make specific accurate plans of blasting revealment .According to the analysis of the monitored water yield and water pressure ,it was found that the high risk of karst cavity had been lifted ,and the expected effect was achieved .

关 键 词：岩溶隧道 释能降压 溶腔 爆破揭示 

分 类 号：U45[建筑科学—桥梁与隧道工程]