摘要
Abstract
In view of the problem that Gulong Coal Industry was affected by the Nanbanqiao fault and some roadways were threatened by water disaster,which affected the safety of mining and excavating,the water inflow and water replenishment were analyzed,and the drilling and grouting projects were designed.Through drilling engineering,the strike,dip angle and drop of the fault were further controlled,indicating that the Nanbanqiao fault had water conductivity.The karst cave was exposed,indicating that it was an important channel for surface water to recharge deep aquifers.Based on this,the grouting reinforcement and reconstruction of Nanbanqiao fault fracture zone was carried out,which effectively weakened the hydraulic connection between K2,K3 limestone in the upper plate of Nanbanqiao fault and Ordovician limestone in the lower plate,and ensured the production safety of Gulong Coal Industry.关键词
水害防治/注浆加固/煤矿水害Key words
water disaster prevention and control/grouting reinforcement/coal mine water disaster分类
矿业与冶金
