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某煤矿区开采后遗留下了采空区地质环境问题,严重影响了生态环境和人类正常的生存环境。为了后期环境治理,应用瞬变电磁法对某煤矿采空区进行物探勘察,采用仪器自带软件绘制各条测线视电阻率拟断面图,对测区内可能存在的地质异常区进行解释,接着对不同深度水平视电阻率切片图进行分析,着重分析地质异常区的分布规律。最后依据视电阻率拟断面图和平面图,结合地质资料很好地圈定了煤矿采空区,并绘制出直观的三维图。其应用效果结果表明:大定源瞬变电磁法对解决煤矿采空区地质问题是一种快捷、高效的勘查手段,为后期治理提供了直接、有效的指导。
A coal mining area left behind after the mining area geology and environment problems, seriously affected the ecological environment and human normal living environment. For the sake of environmental management in the later period, the transient electromagnetic method is used to conduct the geophysical prospecting in the gob of a coalmine. The software is used to draw the simulated resistivity profile of each measuring line and explain the possible geological anomalies in the measuring area. Then the apparent resistivity slices at different depths are analyzed, and the distribution of the anomalous regions is analyzed. Finally, according to the apparent resistivity of the section and floor plan, combined with geological data well delineated the goaf of coal mines, and draw an intuitive three-dimensional map. The results of application show that the method of fixed source transient electromagnetic method is a quick and efficient exploration method to solve the geological problems in goaf of coal mines and provides direct and effective guidance for later management.