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0引言2008年3月皖北煤电集团石膏矿I22回风巷迎头发生特大溃水。水害治理方案是沿I22巷道中轴面施工1#、2#、3#、5#地面注浆孔建造人工堵水塞并封闭溃破口。经过地面注浆,10000 m3/h以上的溃水和2000 m3/h动流量终被制服,堵水率为100%,静水压恢复至4.1MPa。本文介绍4个注浆孔(
0 Introduction In March 2008, Wanbei Coal Group gypsum mine I22 return air lane head crash occurred. Water damage control program is to construct the artificial plugging plug and close the rupture mouth along the grouting holes of No. 1, No. 2, No. 3 and No. 5 grouting holes on the axial surface of I22 roadway. After ground grouting, the collapse of 10000 m3 / h or more and 2000 m3 / h of dynamic flow were finally subdued, the water cut rate was 100% and hydrostatic pressure was restored to 4.1 MPa. This article describes the four grouting holes (