地空瞬变电磁法在煤矿采空区中的应用效果分析

Analysis of the application effect of Ground-airborne transient electromagnetic method in coal mine goaf

煤矿采空区一直是工程中难以解决的重点难题之一,现工程中一般是结合开采资料及煤层分布进行综合分析。由于大型煤矿多采用自然塌落法来处理采空巷道,而非金属类矿山的填充法,随着时间的推移,会出现非常多的塌陷,导致采空区内部情况非常复杂,难以查清。尤其是在老旧的煤矿当中,由于过去技术落后,矿洞测绘资料存在一定的失真,导致很难明确定义现采空区的具体范围,为工程的顺利开展提出了重大的课题。结合黑龙江依兰煤矿(日伪时期的开采老旧煤矿采空区),在地形地貌条件特别差,人难以攀登的条件下,应用地空瞬变电磁法,初步解决了该采空区的范围和规模。

The goaf of coal mines has always been one of the key problems that is difficult to solve in engineering.Currently,comprehensive analysis is generally carried out based on mining data and coal seam distribution in engineering.Due to the use of natural collapse method in large coal mines to treat goaf tunnels,rather than the filling method in non-metallic mines,over time,there will be a lot of collapse,resulting in a very complex internal situation in the goaf that is difficult to identify.Especially in old coal mines,due to outdated technology in the past,there is a certain degree of distortion in the surveying and mapping data of the mine cave,which makes it difficult to clearly determine the specific scope of the goaf,posing a significant issue for the smooth implementation of the project.This article combines the Yilan Coal Mine in Heilongjiang Province(an old coal mine goaf during the Japanese puppet period),and applies the Ground-airborne transient electromagnetic method to solve the scope and scale of the goaf under particularly poor terrain and terrain conditions that are difficult for people to climb.