瞬变电磁法在煤矿灾害勘察评价的应用案例分析

Application Case Analysis of Transient Electromagnetic Method in Coal Mine Disaster Investigation and Evaluation

为进一步明确某现状矿区内易发生地下水危害的区域,采用瞬变电磁法对煤矿地下环境进行勘察,勘察结果表明矿区内可能存在一含水构造带,该构造带纵向基本贯穿标高550~-200 m,可能会对采空区或者巷道的开发使用带来危害。此外在瞬变电磁法对矿区进行勘察时,采空区往往表现为低阻包围着的中高阻特征,而含水裂隙往往表现为低阻特征。本文研究内容对于指导后续矿产资源的开发具有一定指导意义。

In order to further clarify the area where groundwater hazards are prone to occur in a current mining area,the transient electromagnetic method is used to investigate the underground environment of the coal mine.The survey results show that there may be a water-bearing structural belt in the mining area,which basically runs through the elevation of 550~-200 m,which may be harmful to the development and use of goaf or roadway.In addition,when the transient electromagnetic method is used to survey the mining area,the goaf is often characterized by medium and high resistance surrounded by low resistance,while the water-bearing fracture is often characterized by low resistance.The research content of this paper has certain guiding significance for guiding the development of subsequent mineral resources.