摘要
针对探测区域9煤层埋藏较深,采高较高这一特点,在合理布置测网的基础上,采用瞬变电磁法对该矿采空区域进行全覆盖调查。通过分析瞬变电磁剖面图可以清晰地看出该探测区域内在标高1270~1280m处存在煤矿采空区,且采空区充水,与矿方提供的煤层开采位置、开采高度基本吻合;依托瞬变电磁剖面图提供的电阻率数据,对多个剖面数据体进行综合提取、水平距离变换等,从而绘制探测区域内视电阻率切面等值线图,在瞬变电磁切面图上可以准确地圈定采空区含水区域的平面分布位置,为矿方后期在该区域内安全进行基础建设提供数据支撑。探测结果表明瞬变电磁法对含水低阻反映灵敏,可以为含水采空区探测及治理提供依据。
In view of the deep buried depth and high mining height of the 9 coal seam in the exploration area, on the basis of reasonable layout of survey network, transient electromagnetic method is used to investigate the full coverage of the gob area of the mine. Through the analysis of transient electromagnetic profiles, it can be clearly seen that there is goaf in the exploration area with the elevation of 1270~1280 m, and the goaf is filled with water, which is basically consistent with the mining position and mining height of the coal seam provided by the mining party. By comprehensive extraction and horizontal distance transformation of multiple section data, the apparent resistivity plane contour map in the detection area can be drawn, and the plane distribution position of the goaf water-bearing area can be accurately delineated on the transient electromagnetic plane plan,which is provided data support for infrastructure projects in the future. The detection results show that the transient electromagnetic method is sensitive to the low resistance of water and can provide a basis for the detection and control of water gob.
作者
王轩
WANG Xuan(China Coal Handan Design Engineering Co., Ltd., Handan 056031, China)
出处
《河北地质大学学报》
2019年第3期61-64,共4页
Journal of Hebei Geo University
