便携式频率域电磁法三维反演在城市地质调查中的应用  

Application of portable frequency domain three-dimensional electromagnetic inversion in urban geological survey

作　　者：柳建新[1,2] 花海健 卿展辉 郭荣文 刘嵘[1,2] LIU JianXin;HUA HaiJian;QING ZhanHui;GUO RongWen;LIU Rong(School of Geosciences and Info-Physics,Central South University,Changsha 410083,China;Hunan Key Laboratory of Non-Ferrous Resources and Geological Hazard Detection,Changsha 410083,China;Guangdong Geological Environment Monitoring Station Guangzhou,Guangdong 510510,China)

机构地区：[1]中南大学地球科学与信息物理学院,长沙410083 [2]有色资源与地质灾害探查湖南省重点实验室,长沙410083 [3]广东省地质环境监测总站,广州510510

出　　处：《地球物理学进展》2025年第1期328-336,共9页Progress in Geophysics

基　　金：国家自然科学基金项目(42130810,42074165,42374093);中南大学“锰渣与矿涌水低成本治理关键技术攻关与示范”(2023ZJ1090);广东省环境监测总站“粤港澳大湾区(珠三角部分)地面沉降专项调查评价”(DZHJ-2023FW-03);湖南省地质灾害监测预警与应急救援工程技术研究中心开放课题(hndzgczx202401)联合资助.

摘　　要：便携式频率域电磁探测仪器因其具备灵敏度高,抗干扰能力强,操作简单,测量效率高等优点,在城市浅地表勘探领域受到了广泛的应用.由于城市地质勘探目标体尺度更小,三维反演在数据解译准确度方面相比较一维或二维反演更具备优势.为研究频率域电磁探测仪器在城市浅地表勘探中的有效性以及三维反演的优越性,本文针对上海某测试场地的频率域电磁探测仪器GEM-2实测数据进行三维反演,并将结果与传统一维反演结果进行对比,经后期的挖掘结果验证,表明本文所提出的三维反演算法的正确性以及将其应用于城市地下空间探测中的可行性和优越性.The portable frequency domain electromagnetic detection instrument has been widely used in the field of urban near-surface exploration because of its high sensitivity,strong anti-interference ability,simple operation and high measurement efficiency.Due to the smaller scale of urban geological exploration targets,three-dimensional inversion is more advantageous than one-dimensional or two-dimensional inversion in terms of data interpretation accuracy.In order to study the effectiveness of the portable frequency domain electromagnetic detection instrument in urban shallow surface exploration and the superiority of 3D inversion,this paper conducts 3D inversion of GEM-2 measured data from a test site in Shanghai,and compares the results with the traditional 1D inversion results.The excavation results show the correctness of the 3D inversion algorithm proposed in this paper and the feasibility and superiority of its application in urban underground space detection.

关 键 词：城市地质调查 浅地表勘探 可控源电磁法 三维反演 

分 类 号：P631[天文地球—地质矿产勘探]