Xi'an Research Institute Company Limited,China Coal Technology and Engineering Group

煤矿采区内隐伏的陷落柱是矿井水灾的主要通道,严重威胁煤矿安全生产。为了查明工作面内隐伏陷落柱发育范围及其富水性,根据其地球物理特征,采用了矿井瞬变电磁法和矿井直流电法综合物探技术,绘制了拟视电阻率断面图和电阻率深度切片图,探测出了陷落柱的发育位置和范围。结果表明:异常区域为明显低阻反应,电力线呈封闭状,异常区瞬变电磁视电阻率小于3Ω·m,直流电法对应范围电阻率小于6Ω·m,富水性强。利用矿井瞬变电磁法和矿井直流电法可以有效联合探测出陷落柱发育范围及其富水性并相互验证,综合物探技术是未来解决地质问题的发展方向。

The hidden sinkhole within a mining block of a coal mine would be the main channel of the mine water disaster and would be a serious threatener to the min e safety production. In order to find out the development scope and watery of the hidden sinkhole within the coal mining face,according to the geophysics features of the mi ne,the integrated geophysical technology of the Mine Transient Electromagnetic Method and Mine DC Electrical Method was applied to draw the cross section picture of th e apparent resistivity and the deep slicing picture of the resistivity. The electric property distribution features were applied to detect development location and scope of the sinkhole.The analysis showed that transient electro magnetic apparent resistivity in abnormal area was less than 3 2. m,the resistivity in relevant scope of DC Electrical Me thod was less than 6 Q:m,a low resistance reaction would be obvious in the abnormal area and the electric power line would be in a closed status and high watery. The cas es showed that the application of the mine transient electromagnetic method and the mine DC electrical method could be effectively and jointly detect development scope a nd watery of the sinkhole and could be verified. The integrated geophysical technology would be development orientation to solve further geological problems.