TEM精细探查煤矿覆岩离层水技术  

Technology of detecting overburden separation water in coal mine based on TEM

作　　者：马炳镇 MA Bingzhen(CCTEG Xi’an Research Institute(Group)Co.,Ltd.,Xi’an 710077,China)

机构地区：[1]中煤科工西安研究院(集团)有限公司,陕西西安710077

出　　处：《陕西煤炭》2023年第4期19-23,38,共6页Shaanxi Coal

摘　　要：为实现煤矿开采中对覆岩离层水的有效探测,分析研究开采中覆岩离层水形成的机理和其与围岩介质电性特征,提出采用对低阻水体敏感的瞬变电磁法进行探测,通过模型约束反演技术提高勘探的电性分层能力及分辨率。在反演断面成果中先确定覆岩离层水的电性层位,识别、圈定电阻率等值线发生明显扭曲、变形等低阻富水异常,以此精细化解释开采覆岩离层水,经钻探放水工作,验证该技术的可靠性。In order to realize the effective detection of overburden separation water in coal mining,this paper first analyzes and studies the formation mechanism of overburden separation water and its electrical characteristics with surrounding rock media,proposes a detection technology by using the transient electromagnetic method sensitive to low resistivity water body,and improves the electrical stratification ability and resolution of exploration through model constrained inversion technology.In the inversion section results,first determines the electrical horizon of overburden separation water,then identifies and delineates the low resistance rich water anomalies such as obvious distortion and deformation of resistivity isoline,so as to explain the mining of overburden separation water.The later drilling and drainage work has verified that the technical method is reliable.

关 键 词：瞬变电磁法 先验模型约束 反演技术 精细探查 覆岩离层水 

分 类 号：P631.2[天文地球—地质矿产勘探]