瞬变电磁法在煤层顶板含水层富水性勘查中的应用研究  

Study on application of transient electromagnetic method in the exploration of water-rich property of coal seam roof aquifer

作　　者：刘江斌 Liu Jiangbin(Shaanxi Shanmei Caojiatan Mining Co.,Ltd.,Yulin 719000,China)

机构地区：[1]陕西陕煤曹家滩矿业有限公司,陕西榆林719000

出　　处：《能源与环保》2023年第10期49-57,共9页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金资助项目(51374091)。

摘　　要：采用地面瞬变电磁法勘探技术,在主要大巷、首采面、次采面范围内对影响主要煤层开采的含水层的富水性进行探测,研究得出了探测区内延安组、直罗组、安定组及基岩风化带岩层低阻异常分布,圈定了异常区范围;分析了探测区内主采煤层(2煤)及其顶板砂岩低阻异常分布,圈定了异常范围;获得了不同异常区的平面、垂向联系以及探测区内主要断层构造的富水性情况。研究可为井筒、巷道开拓以及生产阶段煤层的安全回采提供参考。The ground transient electromagnetic method exploration technology is used to detect the water abundance of the aquifer that affects the mining of the main coal seams within the main roadway,the first mining face and the secondary mining face.The study identified the low resistivity anomaly distribution of rock layers in the Yan'an Formation,Zhiluo Formation,Anding Formation,and bedrock weathering zone within the detection area,and delineated the scope of the anomaly area.The low resistivity anomaly distribution of the main coal seam(No.2 coal seam)and its roof sandstone in the exploration area was analyzed,and the anomaly range was delineated.The horizontal and vertical connections of different anomaly areas and the water-rich of main fault structures in the exploration area were obtained.The study provides reference data for the development of shaft and roadway and the safe mining of coal seams in the production stage.

关 键 词：瞬变电磁法 煤层顶板 含水层 富水性 低阻异常 

分 类 号：P641.54[天文地球—地质矿产勘探]