隧道岩溶病害危险性分区在超前地质预报中的应用  

Application of Karst Hazard Zoning to Advance Geological Forecasting in Tunnels

作　　者：柳治国[1] 乔东华[1] 李跃伟[1] 徐建业[1] 

机构地区：[1]贵州省交通规划勘察设计研究院股份有限公司,贵阳550001

出　　处：《现代隧道技术》2013年第3期124-128,146,共6页Modern Tunnelling Technology

摘　　要：针对厦蓉高速公路沙井街隧道岩溶的发育特点,提出了"隧道岩溶病害危险性分区"概念,并应用于超前地质预报工作中;根据中导洞开挖揭露的地质条件,对隧道岩溶病害危险性分区进行了修正,以指导主洞的超前预报工作,从而提高了预报工作的针对性并突出了重点;同时,基于高密度电法对不同介质电阻率的敏感性,在预报方法上将地表高密度电法与洞内地质雷达法相结合,提高了对重大岩溶病害预报的准确性。实际开挖结果显示:超前地质预报结果与实际情况高度吻合。Regarding the development characteristics of the karst in the Shajinjie Tunnel on the Ximen-Chengdu Highway, a new concept of ＂karst hazard zoning＂ is put forward and applied to advance geological forecasting in tun- nels. Based on the geological conditions discovered during the middle pilot heading excavation, some revisions were made with respect to the karst hazard zoning in order to guide the advance forecasting in the main tunnel. Meanwhile, the high-density electrical method was combined with casting in major karst hazards. The excavation results highly consistent with the actual ones geological radar method, improving the accuracy of fore- show that the outcomes of advance geological forecasting are

关 键 词：隧道 岩溶病害 危险性分区 超前地质预报 

分 类 号：U452.11[建筑科学—桥梁与隧道工程]