摘要
在我国由于煤矿的无序开采遗留了诸多巷道和采空区,给目前的城市建设带来了极大的隐患。为排查长春某建筑场地的采空区隐患,在测区内开展了瞬变电磁法勘探工作。通过测量初步查明了测区内的地层分布,并发现两处巷道引起的异常并圈定了异常范围。经钻探验证结果表明,瞬变电磁法推断的采空区隐患与钻探基本吻合,效果显著。该方法具有良好的应用前景。
Due to the disorderly mining of coal mines,many tunnels and goafs have been left,which bring great hidden dangers to the current urban construction in our country.In order to investigate the hidden goaf dangers in a construction site in Changchun,transient electromagnetic exploration is carried out in the survey area.Preliminary investigation of the stratum distribution in the survey area is conducted,and two anomalies caused by roadways are found and the anomaly range is delineated.Drilling verification results show that the hidden dangers in goaf area inferred by the transient electromagnetic method are basically consistent with the drilling,and the effect is remarkable.This method has a good application prospect.
作者
赵后越
Zhao Houyue(Jilin Branch of China National Geological Exploration Center of Building Materials Industry)
出处
《勘察科学技术》
2024年第2期61-64,共4页
Site Investigation Science and Technology
关键词
瞬变电磁法
采空区
定源回线
transient electromagnetic method
goaf area
fixed-source loop
