摘要
新元煤矿3#煤层工作面底板下100 m范围内分布有较强赋含水层K7砂岩、K2灰岩层。工作面如有构造发育,顶底板隔水层受到断层构造的破坏,在构造发育地段有可能顺构造破碎带向工作面涌水,引起水害事故。为了探查3#煤层底板岩层赋水情况及工作面内的发展趋势,便于矿方有效地开展防治水工作,新元煤矿对首采区5个工作面进行了直流电测深井下探测,经分析并结合各工作面和巷道的视电阻率情况,最终确定电阻率在50Ω·m以下作为工作面异常区的解释成果。
There are K7 sandstone and K2 limestone with strong water-rich in the area of 100 m below of No.3 coal seam in Xinyuan Coal Mine. If the structure of the working face develops,the floor aquifer will be destroyed,which may cause water disasters in the structural development area. In order to explore the water-bearing situation in floor strata of No.3 coal seam and to carry out water control work effectively,five working faces in the first mining area were surveyed by DC electric sounding in Xinyuan Mine.Through analyzing the apparent resistivity of each working surface and roadway,the resistivity below 50 Ω·m was determined as the abnormal area of the working face.
作者
马文豪
查文锋
MA Wen-hao;ZHA Wen-feng(Shanxi Coking Coal Fenxi Mining Group,Jiexiu 032000,China;Shanxi Yangquan Coal Industry Group,Yangquan 045000,China)
出处
《陕西煤炭》
2019年第3期79-81,91,共4页
Shaanxi Coal
关键词
直流电测深
视电阻率
富水性
底板岩层
DC electrical sounding
apparent resistivity
water-rich
floor strata
