SOTEM在厚覆盖煤矿采空区探测中的应用实例  

Application cases of the short-offset transient electromagnetic method in detecting goafswith thick overburden in a coal mine

作　　者：黄仕茂 杨光[1,2] 王军成 罗传根[1,2] 徐明钻 周楠楠 赵鹏 HUANG Shi-Mao;YANG Guang;WANG Jun-Cheng;LUO Chuan-Gen;XU Ming-Zuan;ZHOU Nan-Nan;ZHAO Peng(Geological Exploration Technology Institute of Jiangsu Province,Nanjing 210049,China;Jiangsu Province Engineering Research Center of Airborne Detecting and Intelligent Perceptive Technology,Nanjing 210049,China;Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Beijing Zhongkediyuan Technology Co.,Ltd.,Beijing 100029,China)

机构地区：[1]江苏省地质勘查技术院,江苏南京210049 [2]江苏省航空对地探测与智能感知工程研究中心,江苏南京210049 [3]中国科学院地质与地球物理研究所,北京100029 [4]北京中科地垣科技有限公司,北京100029

出　　处：《物探与化探》2024年第5期1208-1214,共7页Geophysical and Geochemical Exploration

基　　金：江苏省自然资源保护利用专项资金(矿地融合试点)项目(苏财资环[2021]45号)。

摘　　要：徐州沛县某煤矿新生代在断陷盆地内沉积了砖红色的古近系和新近系,第四系普遍覆盖在各地层之上,其中第四系、侏罗—白垩系覆盖层较厚,可达500 m以上。采用电性源短偏移距瞬变电磁法进行探测,根据地电情况设计合理的观测参数,得到地下1 300 m深度范围内的电性结构,在地下900 m深度发现采空区,圈定的采空区域与矿区的开采现状吻合。探测成果对今后华北型煤田厚覆盖采空区探测有借鉴意义。Within a coal mine in Peixian County,Xuzhou City,brick-red Paleogene and Neogene strata were deposited in the faulted basin during the Cenozoic,with extensive Quaternary strata overlying various strata.The Quaternary,Jurassic,and Cretaceous strata exhibit thick overburden,up to over 500 m.This study explored the coal mine using the short-offset transient electromagnetic(SOTEM)method.Based on geoelectric conditions,reasonable observation parameters were designed to obtain the subterranean electric structure within a burial depth of 1500 m.Goafs were detected at a burial depth of 900 m,with their delineated boundaries aligning with the mining situation of the coal mine.The results of this study serve as a reference for detecting goafs with thick overburden in North China-type coalfields.

关 键 词：瞬变电磁法 短偏移距 厚覆盖层 采空区 

分 类 号：P631.1[天文地球—地质矿产勘探]