综合物探技术在重庆丁市隧道勘察中的应用  

Application of Comprehensive Geophysical Prospecting Technique in Survey of Dingshi Tunnel in Chongqing

作　　者：刘明 杨楠 郑东 向庆刚 向阳 

机构地区：[1]四川省地质工程勘察院集团有限公司,四川 成都 [2]重庆交通大学土木工程学院,重庆 [3]重庆地质矿产研究院,重庆

出　　处：《测绘科学技术》2024年第1期31-38,共8页Geomatics Science and Technology

摘　　要：长大深埋隧道中地下岩溶发育会造成涌水突泥、围岩失稳等地质灾害,让隧道施工中存在巨大的安全隐患。丁市隧道位于渝东南岩溶区,隧道洞身段岩溶洼地及槽谷较多,且地下水含量丰富,难以采用单一勘察手段查明岩溶管道及岩溶发育情况。为准确查明丁市隧道岩溶管道及岩溶发育情况,本文应用EH4大地电磁法和声波测井两种物探技术辅助钻探技术针对不同位置、埋深的岩溶管道及岩溶发育情况进行综合分析,并根据物探与钻探的数据对比表明,本文提出的综合物探技术适用于复杂地形的山区和富含岩溶水的隧道。The development of underground karst in long-buried tunnels will cause geological disasters such as instability of surrounding rock, water inrush and mud inrush, which will bring huge safety haz-ards in tunnel construction. Dingshi Tunnel is located in the karst area of southeast Chongqing, and there are many karst depressions and troughs in the tunnel body, and the groundwater content is rich, and it is difficult to use a single survey method to find out the karst pipeline and karst devel-opment. In order to accurately identify the karst pipeline and karst development of Dingshi Tunnel, this paper used two geophysical prospecting techniques of EH4 geomagnetic method and acoustic logging assisted drilling technology to comprehensively analyze karst pipeline and karst develop-ment at different locations and buried depths, and according to the comparison of geophysical and drilling prospecting data, the comprehensive geophysical prospecting technology proposed in this paper is suitable for complex terrain in mountainous areas and tunnels rich in karst water.

关 键 词：隧道 岩溶 综合物探法 EH4大地电磁法 声波测井 

分 类 号：U45[建筑科学—桥梁与隧道工程]