四维电法探测技术在煤矿防水注浆检测中的应用与研究

Application and Study of Four-dimensional Electric Method in Detection of Coal Waterproof Grouting

鲁中某煤矿西边界煤柱防治水为注浆加固工程,为检测注浆工程效果,确保煤矿安全生产,采用瞬变电磁法进行勘查,查明采空区的位置、范围、深度及含水特征,同时通过对比注浆前后视电阻率等值线形态变化,应用四维电法技术对所有注浆钻孔情况进行评价,为煤矿防水注浆工程质量提供物探技术依据。

In western boundary of a coal mine in middle Shandong area,a grouting reinforcement works is done to prevent hidden trouble caused by water.To detect the effect of grouting,and ensure the safe production of coal,we use the transient electromagnetic method to identify the location,scope,depth,and aquifer characteristics of the goaf,and compare with the morphological changes of the apparent resistivity contour.We evaluate all the grouting drilling applying four-dimensional electrical technique and provide basic geophysical technique for mine grouting quality.