瞬变电磁测深技术在孙庄矿老空积水区勘探中的应用  

Application of transient electromagnet exploring depth in exploration of goaf water accumulation area in Sunzhuang Mine

作　　者：申伟 Shen Wei(Handan Sunzhuang Mining Co.,Ltd.,Handan 056200,China)

机构地区：[1]邯郸市孙庄采矿有限公司,河北邯郸056200

出　　处：《煤炭与化工》2025年第4期67-72,共6页Coal and Chemical Industry

摘　　要：孙庄矿井田南部由于临近露头边界,存在较大范围且开采年代较为久远的小煤窑,现阶段小煤窑均已关停,由于小煤窑形成的采空区范围不详,开采深度不甚清楚,其形成的采空积水区为矿井下部煤层的安全开采带来很大的影响。在小煤窑分布区域利用瞬变电磁测深技术,探测目标区域内低阻异常体的分布特征,推断、圈定富水、积水异常区。根据瞬变电磁测深数据获得电阻率—反演断面图,并结合该地区已知水文地质资料,解释推断了小煤窑主采煤层老空区层位疑似老空积水区的空间赋存状态、范围等信息。经后期钻探验证,部分老空积水区位置与瞬变电磁测深推断的异常区位置基本吻合。此次勘探为矿区及周边相邻矿井下一步开展瞬变电磁测深法探查小煤窑老空积水区提供了技术支持。Due to close to the outcrop boundary,there is a large range of small coal mines with a long mining age in the southern part of Sunzhuang mine field.At present,small coal mines have been closed.Due to the unknown range of goaf formed by small coal mines and the unclear mining depth,the goaf of water accumulation area formed by small coal mines has a great impact on the safe mining of coal seams in the lower part of the mine.In the distribution area of small coal mines,transient electromagnet exploring depth was used to detect the distribution characteristics of low-resistance abnormal bodies in the target area,and infer and delineate the water abundance and water-accumulated abnormal areas.Based on the transient electromagnet exploring depth data,the resistivity-inversion section map was obtained,and combined with the known hydrogeological data in the area,the spatial occurrence state and range of the suspected goaf of water accumulation area in the main coal seam of the small coal mine were explained and inferred.After the later drilling verification,the location of some goaf of water accumulation area was basically consistent with the location of the abnormal area inferred by transient electromagnet exploring depth.This exploration provided technical support for the next step of transient electromagnet exploring depth method to explore the goaf of water accumulation area of small coal mines in the mining area and surrounding adjacent mines.

关 键 词：瞬变电磁测深 小煤窑老空区 低阻异常体 

分 类 号：TD745[矿业工程—矿井通风与安全]