摘要
铜官山-135米中段石门掘进中,工作面遇到250米~3/时的裂隙水危害,为此采用预注浆法加以处理。本文介绍这一注浆工程的施工及效果。
During the excavation of the cross drift at - 135m level in Tongguanshan Copper Mine,a hazard of fissure -water at 250 m3/h was encounted in the coork-ing face. Therefore, pregrouting was performed for water blockage with the efficiency up to 94 %. The operation and effectiveness of the pregrouting project were described in the paper.
