摘要
基于瞬变电磁法的基本理论以及矿井采空区的地球物理特征,并结合矿井瞬变电磁法的技术特点,采用小线框重叠回线装置探查矿井采空积水区。结果表明:用此装置得出的视电阻率断面图横向分辨率较高,但纵向分辨率不高;采空积水区距离巷道越近,在视电阻率断面图上低阻响应越早,采空积水区体积越大,低阻异常范围越大,电阻率值越低。
Based on the basic theory of transient electromagnetic method and the geophysical characteristics of mined-out area in coal mine,and combined with the technical characteristics of mine transient electromagnetic method,small wireframe overlapping loop device is used to explore the goaf ponding area of mine.The results show that the transverse resolution of the apparent resistivity section map obtained by this device is high,but the longitudinal resolution is not high.The closer the goaf water area is to the roadway,the earlier the low resistivity response on the apparent resistivity section map is,the larger the volume of the goaf water area is,the larger the range of low resistivity anomaly is,and the lower the resistivity value is.
作者
苏彦龙
SU Yan-long(Henan Institute of Geophysics and spatial information,Zhengzhou450009,China)
出处
《世界有色金属》
2021年第16期119-120,共2页
World Nonferrous Metals
关键词
矿井瞬变电磁法
采空积水区
小线框
视电阻率值
mine transient electromagnetic method
mined-out water accumulation area
small wire frame
apparent resistivity
