深部采场突水构造矿井瞬变电磁法探查理论及应用  

Theoretical analysis of mine transient electromagnetic method and its application in detecting water burst structures in deep coal stope

作　　者：于景邨[1] 刘志新[1] 刘树才[1] 汤金云[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《煤炭学报》2007年第8期818-821,共4页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(40674074);国家重点基础研究发展计划(973)资助项目(2007CB209406);高等学校博士学科点基金资助项目(20050290501)

摘　　要：在分析深部采场水文地质特征基础上,采用矿井瞬变电磁探查技术查明深部采场突水构造位置.根据井下巷道的实际应用条件,将瞬变电磁技术应用到井下巷道内进行探测,开发了采用非接触式、多匝数和小回线(边长2 m左右)井下测量装置;根据瞬变电磁场"烟圈效应"理论,推导出全空间瞬变电磁视电阻率计算公式和由视电阻率-时间曲线计算视电阻率-深度曲线的数学模型,对矿井瞬变电磁探查技术进行了研究;研究出应用于井下探测巷道周围空间不同位置、不同形态突水构造瞬变电磁探测装置、探查技术及资料处理和解释方法.采用矿井瞬变电磁法在多个矿井探测深部采场突水构造进行了实际应用,通过井下注浆或疏放降压钻孔验证,该方法探查深部采场突水构造位置是非常有效的矿井地球物理方法之一.The hydrological characters of deep coal stope were analyzed and the mine transient electromagnetism technique was used to detect the location of water burst structure. According to the actual condition of roadway, developed a survey device which was of small muhi-turu loops and non-contact configurations to detect the deep coal stope. Based on the transmitting theory of ＂smoking ring effect＂, the apparent resistance computational formula of full space transient electromagnetism technique and the mathematical model were deduced, which can be used to transform the apparent resistance-time curve to the apparent resistance-depth curve. The research findings include transient electromagnetism device, work technology, data processing and interpretation method, which can been ap- plied to detect water burst structures that locates different places and has different shape around roadway. Actual application indicates that the mining transient electromagnetism technique is one of the effective geophysical tools for detecting the location of water burst structure in deep coal stope.

关 键 词：深部采场 矿井瞬变电磁 突水构造 

分 类 号：P631.325[天文地球—地质矿产勘探]