综合物探在陷落柱精确定位探测中的应用

为保证安全回采3301工作面,精确探明工作面内部陷落柱发育位置,避免给煤矿生产衔接和安全回采造成严重问题,对该工作面进行了无线电波透视探测,并对重点异常区域进行了槽波地震精细探测.结果表明:无线电波透视技术,可对陷落柱进行定性判定和横向位置准确定位,但纵向分辨率较低.槽波勘探技术,对陷落柱等其他地质异常均有明显响应,且...

Application of Comprehensive Geophysical Prospecting in Accurate Positioning Detection of Collapse Columns

In order to ensure the safe mining,accurately detect the development position of collapse columns,and avoid serious impact on the production connection of No.3301 working face,this study first carried out radio wave perspective detection on the working face and then in-seam seismic exploration on the key abnormal areas.The results show that:the radio wave perspective technology can qualitatively determine the collapse columns,with accurate horizontal position but low-resolution vertical position;the in-seam seismic exploration shows obvious response to geological anomalies,including collapse columns and high resolution of structural development positions,but it is difficult to qualitatively analyze the detected anomalies;the combination of the radio wave perspective detection on the total working face and in-seam seismic detection on the key areas can not only reduce the workload but also realize the characteristic judgment and accurate positioning of the abnormal objects.While the comprehensive geophysical exploration shows that the collapsed column has the long axis of 100 m and the short axis of 83 m,the actual exposed collapse column has the long axis of 94 m and the short axis of 64 m.The verified results are basically consistent with the prospecting results,which could provide reliable geological data for the safe production of the working face.