约束反演与地质数据综合解释砂岩含水层特征  

Comprehensive Interpretation of Sandstone Aquifer Characteristics by Constrained Inversion and Geological Data

作　　者：李丹 LI Dan(China Coal Technology and Engineering Group Xi′an Research Institute,Xi′an 710077,China)

机构地区：[1]中煤科工集团西安研究院有限公司,西安710077

出　　处：《煤炭技术》2022年第7期96-100,共5页Coal Technology

基　　金：国家重点基础研究发展计划(973计划)资助项目(2017YFC0804105);中国煤炭科工集团有限公司科技创新创业资金专项(2018MS006)。

摘　　要：为了掌握红庆河煤矿首采区目标工作面顶板含水层富水特征,采用大回线源地面瞬变电磁法开展探测工作。基于约束反演方法处理探测数据,结合测井数据标定瞬变电磁法反演断面纵向层位,利用钻孔地层数据指导抽取成果平面。将反演结果和地质资料进行对比,综合解释红庆河煤矿首采区指定区域含水层富水特征。结果表明:红庆河煤矿 3^(-1)煤顶板上覆含水层富水特征不均一,低阻异常区主要集中在地势低洼和地层孔隙裂隙发育区域。经实际生产揭露,解释的低阻异常区内有不同程度的出水,解释结果与实际揭露吻合,探测解释结果为首采区制定合理的防治水措施提供参考资料。In order to master the water-rich characteristics of the target working face roof aquifer in the first mining area of Hongqinghe coal mine,large loop source ground transient electromagnetic method is used to carry out the detection work.The exploration data were processed by constrained inversion method,the longitudinal horizon of TEM inversion section was calibrated with logging data,and the borehole formation data was used to guide the extraction of the result plane.The inversion results are compared with geological data to comprehensively explain the characteristics of aquifer abundance in the designated area of Hongqinghe coal mine.The results show that the water-rich characteristics of the aquifer overlying the 3^(-1)roof of Hongqinghe coal mine are not uniform,and the detected low-resistivity anomalies are mainly concentrated in the low -lying part of the stratum,which is interpreted as the relatively water-rich area of the aquifer.According to the actual production,there are different degrees of water in the explained low resistance anomaly area,and the interpretation results are consistent with the actual exposure.The exploration interpretation results provide reference for the development of reasonable water prevention and control measures in the first mining area.

关 键 词：瞬变电磁法 一维约束反演 测井曲线 钻孔数据 砂岩含水层 低阻异常区 

分 类 号：P631.325[天文地球—地质矿产勘探] TD745[天文地球—地质学]