瞬变电磁法在采空区勘察中的应用  

Application of Transient Electromagnetic Method in Exploring Coal Mine Gob

作　　者：康文献[1] 张东阔 李海晓[3] 

机构地区：[1]三峡大学,湖北宜昌443002 [2]郑煤集团金龙煤业公司,河南巩义451271 [3]黄河水利科学研究院,河南郑州450003

出　　处：《中州煤炭》2009年第4期26-27,31,共3页Zhongzhou Coal

摘　　要：煤矿采空区对工程建设项目有不良的地质影响,应采用有效勘探方法准确判定采空区的位置,并采取相应的治理措施,以减少采空区的危害。根据采空区的岩体和地球物理特征,认为瞬变电磁法是采空区勘察技术中的有效方法,它观测的是纯二次场,分辨率高。对某高速公路下方采空区进行探测,探测结果呈现高阻扭曲异常和低阻异常特性,勘察成果经由钻探证实,取得了良好的效果。Coal mine gob has harmful geological function to structure construction. Effective investigation method should be used to determine the location of coal mine gob to avoid its hazards. By analyzing the geophysical characters of coal mine gob,it proposed that transient electromagnetic method（TEM）is an effective exploration approach. Pure secondary field was observed and high resolution was acquired through the method. An exploration to one coal mine gob under speedway was made, the detection results show that, coal mine gob has its unique geo-electrical identity. Drilling results proved that TEM had achieved good effects.

关 键 词：瞬变电磁法 采空区 电阻率 勘探区 勘探技术 

分 类 号：P631.325[天文地球—地质矿产勘探]