矸石充填法在防治煤层底板突水中的应用

Application of Filling Method with Gangue in Controlling Water Inrush from Coal Floor

针对焦家寨煤矿在回采过程中出现的底板突水现象,根据矿区的水文地质条件,研究了5#煤层底板突水因素,通过突水系数计算得出突水系数等值线图,判断煤层底板突水的危险性;提出采用矸石充填开采技术来预防煤层底板突水。经过工程实践,结果表明:使用矸石充填技术降低了底板突水的危险,保证了充填体的强度,解决了矸石的排放,降低了充填的成本。

Aiming at the water inrush from floor during mining in Jiaojiazhai Colliery,the author analyzes the water inrush factors from No.5 coal seam floor based on the hydrogeological conditions,determines the hazards of water inrush from floor according to contour plot of water inrush coefficient,and proposes the filling with gangue technology to prevent water inrush from floor,which can reduce the water inrush risks,ensure the intensity of filling body and solve the gangue drainage with low filling cost.