音频大地电磁测深法在矿区岩溶地面塌陷勘查中的应用  

Application of AMT in Exploration of Karst Ground Collapse in Mining Area

作　　者：周伟毅 ZHOU Weiyi(Geological Environment Center,Remote Sensing Geological Survey and Monitoring Institute of Hunan Province,Changsha 410)

机构地区：[1]湖南省遥感地质调查监测所地质环境中心,湖南长沙410114

出　　处：《电声技术》2024年第8期140-146,共7页Audio Engineering

摘　　要：地面塌陷是常见的地质灾害之一,具有隐蔽性、随机性、突发性等特点,这些特性往往让灾害发生时人员安全威胁较大、财产损失较大。某盐矿企业利用双井水平钻连通水溶法开采芒硝矿,连通进口形成了地表塌陷变形现象,致使数栋民房变成危房,严重威胁了人民生命和财产安全。经过查阅资料和踏勘,选用音频大地电磁测深(Audio-frequency Magnetotellurics,AMT)方法对地下隐蔽致灾区域进行勘查。以此项目为例介绍AMT在地面塌陷勘查中的应用,简述了其工作原理和野外工作方法,其勘查结论得到了后期钻探验证的有力证明,能够为下一步灾害治理与地面修复提供依据。Ground collapse is one of the common geological disasters,which has the characteristics of concealment,randomness,sudden occurrence,etc.These characteristics often make the safety of personnel and property losses greater.A certain salt mining enterprise used the double well horizontal drilling connection water solution method to mine mirabilite ore.The connection to the inlet formed a phenomenon of surface collapse and deformation,causing several residential buildings to become dangerous,seriously threatening the safety of people's lives and property.After consulting materials and conducting surveys,the Audio-frequency Magnetotellurics(AMT)was selected to explore the hidden disaster prone areas underground.This project is taken as an example to introduce the application of AMT in ground subsidence exploration,and briefly describes its working principle and field work methods.The exploration conclusions have been strongly proven by later drlling verification,which can provide a basis for the next step of disaster management and ground restoration.

关 键 词：音频大地电磁测深(AMT) 地面塌陷 灾害治理 地面修复 

分 类 号：P618.41[天文地球—矿床学]