我国高速铁路发展势头迅猛,特别是在西部山区修建隧道时,将会遇到较多的地质条件技术复杂的高风险隧道。但由于地质勘测深度的不一,不可能全部揭示尤其是高风险长大隧道的所有地质风险,这就要求在施工过程中,必须要有针对性地采用地质超前预报手段,并开展全面的地质调查工作,将更深入地了解隧址所在区域的地质环境及条件,对不良地质进行超前揭示或预报,综合分析隧道所通过区域的地质情况,根据现场实际情况及综合分析判释资料进行动态设计,对于指导现场施工,规避施工中及后期运营风险,是十分必要的。文章以贵广铁路斗篷山隧道为例,在其施工中所遇不良地质情况及采取的措施,对岩溶高风险长大隧道的地质情况进行简单分析,希望对大家有借鉴意义。
The development of the high-speed railway is booming in China.More high-risk tunnels with complicated geo-logical conditions are encountered especially in western mountains.However,due to the different depth of the geological survey,it is impossible to reveal all the geologic risks,particularly for those high-risk long tunnels,so it is required that the advanced geological forecast must be adopted specifically during construction.Besides,all-round geological survey shall be carried out so that the geological environment and conditions in the area where the tunnel is located shall be in-depth known.It is very necessary to predict the unfavorable geology,to comprehensively analyze the geological condi-tions in the tunnel area and to carry out dynamic designs according to the on-site conditions and analysis data,in order to guide the site construction and avoid the operational risks during and after construction.In the paper,taken Doupeng-shan tunnel in Guiyang-Guangzhou railway as an exa