瞬变电磁法在煤矿采空区勘查中的应用研究  

Research on application of transient electromagnetic method in exploration of goaf in coal mine

作　　者：刘培浩 Liu Peihao(Shanxi Xinzhou Shenda Qifeng Coal Industry Co.,Ltd.,Xinzhou 036799,China)

机构地区：[1]山西忻州神达栖凤煤业有限公司,山西忻州036799

出　　处：《能源与环保》2021年第6期92-99,共8页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：“十三五”国家科技重大专项资助项目(2016ZX05045004-007)。

摘　　要：为了核实某煤矿矿区采空区范围,在地质概况及地球物理特征基础上,采用瞬变电磁法研究了某煤矿二1煤层采空区分布,分析了了工作布置、技术措施及数据处理步骤,根据视电阻率等值线图分析,得到在勘探区共划分了各类电性异常17个;根据勘探区顺二1煤层电性分布特征,把勘查区分为3个异常区段;根据勘探区顺二1煤层视电阻率切片图以及各测线视电阻率剖面图的异常形态,结合调查采空区的形态,对勘探区的二1煤层采空区异常区进行推断解释,然后结合核实测量与钻探验证,得到了某煤矿内二1煤层可靠的采空区范围及分布情况。研究为下一步资源储量核实提供依据。In order to verify the scope of the goaf in a coal mine,based on the geological profile and geophysical characteristics,the transient electromagnetic method was used to study the distribution of the goaf in theⅡ1 coal seam of a coal mine,and the work layout,technical measures and data processing steps were analyzed.According to the analysis of apparent resistivity contour map,a total of 17 electrical anomalies of various types were classified in the exploration area;according to the electrical distribution characteristics of theⅡ1 coal seam in the exploration area,the survey was divided into 3 anomalous sections.The apparent resistivity slice map of theⅡ1 coal seam in the exploration area and the abnormal shape of the apparent resistivity profile of each survey line,combined with the survey of the goaf form,inferred and interpret the abnormal area of theⅡ1 coal seam in the exploration area.Then combined with verification measurement and drilling verification,a reliable range and distribution of the mined-out area of theⅡ1 coal seam in a coal mine was obtained.The research provided a basis for the next step of resource reserve verification.

关 键 词：地球物理特征 瞬变电磁法 采空区 视电阻率 异常区 

分 类 号：TD745.2[矿业工程—矿井通风与安全]