掘进工作面临近积水采空区水害防治技术应用

Application of Water Disaster Control at Driving Face Adjacent to Goaf with Seeper

矿井井田内采空区积水探测不到位,会严重影响临近工作面的安全回采。本文以王家河煤矿4^(-2)302工作面回风巷掘进为研究对象,对工作面位置水文地质情况进行了分析,通过瞬变电磁法探测到工作面前方130 m位置存在采空区,通过钻孔水量数据分析可知,掘进头前方最大涌水量不小于57 m^(3)/h。采空区内有大量积水,积水高度约为12 m。通过钻孔验证,结果和物探结果基本一致。该技术对临采空区水害防治具有一定指导和现实意义。

By analysis of hydro-geological situation in ventilation roadway at 4^(-2)302 working face of Wangjiahe Colliery, the author determines that there is a goaf area 130 m ahead of the working face with 12-meter-deep seeper by transient electromagnetic method and the maximum water inflow ahead of heading faces is not less 57 m^(3)/h through borehole water volume data analysis, which is basically the same as the geophysical prospecting result and of guiding and practical significance for water disaster control adjacent to goaf with seeper.