地空瞬变电磁法在复杂地形隧道勘察中的应用  

Application of Ground-Airborne Transient Electromagnetic Method in Tunnel Surveying in Complex Terrain

作　　者：孙乃泉[1,2] 刘铁华[3] 李貅[1,2] 薛敬儒 蒋道君[3] 梅竹 SUN Naiquan;LIU Tiehua;LI Xiu;XUE Jingru;JIANG Daojun;MEI Zhu(College of Geology Engineering and Geomatics,Changan University,Xian 710054,China;Integrated Geophysical Simulation Laboratory of Changan University,Xian 710054,China;China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)

机构地区：[1]长安大学地质工程与测绘学院,西安710054 [2]长安大学地球物理场多参数综合模拟实验室,西安710054 [3]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《铁道标准设计》2025年第3期58-64,共7页Railway Standard Design

基　　金：国家重点研发计划项目(2021YFB2600402)。

摘　　要：由于传统的地面地球物理探测方法及地质勘察方法受场地及地形限制,无法有效开展隧道地质灾害源的探测任务,地空瞬变电磁法应用到复杂地形条件下的隧道地质灾害勘探可有效解决地形限制。地空瞬变电磁法以旋翼无人机为搭载平台,以地表线性源为发射源,具有施工快速简便、勘探深度大等优点。根据复杂地形条件下的地空瞬变电磁工作流程,以宜涪高铁孟家垭隧道为例,开展地空瞬变电磁勘查工作,查明待建隧道区域的岩溶发育及安全隐患问题,取得了良好的勘探效果。该方法为隧道设计、评估与灾害预防工作提供了参考,同时验证了地空瞬变电磁法在复杂地形条件下工作的可靠性和优越性。Traditional ground geophysical exploration methods and geological survey techniques are often constrained by site and terrain conditions,making them ineffective for detecting geological hazards in tunnel areas.The application of the ground-airborne transient electromagnetic(GATEM)method in tunnel geological hazard exploration under complex terrain conditions can effectively overcome these limitations.The GATEM method utilizes a rotor unmanned aerial vehicle as the platform and surface linear sources as the emission sources,offering advantages such as rapid and simple deployment and greater exploration depth.Based on the working process of the GATEM method in complex terrain,a case study of the Mengjiaya Tunnel on the Yichang-Fuling high-speed railway was conducted.The survey successfully identified karst development and safety hazards in the proposed tunnel area,achieving excellent exploration results.The GATEM provides valuable references for tunnel design,evaluation,and disaster prevention,while also verifying its reliability and advantages under complex terrain conditions.

关 键 词：隧道工程 地空瞬变电磁法 复杂地形 岩溶探测 三维瞬变电磁模拟 

分 类 号：U25[交通运输工程—道路与铁道工程] P642[天文地球—工程地质学]