In order to solve the problems of low support efficiency and high labour intensity that exist in the current monolithic hydraulic support system of overrunning support,the grouting anchor cable type of overrunning support is proposed on the basis of the analysis of the site conditions of the 305-li working face as an example,and the optimal arrangement scheme of the grouting anchors and the parameters of grouting operation are determined through numerical simulation analysis,and the application of grouting anchor cable type of overrunning support is finally verified based on the actual production.Finally,the application of anchor cable grouting over-support is verified based on actual production.
hydraulic supportgrouting anchor cablegrouting timegrouting pressureradius of slurry spreadperimeter rock control
NETL
NSTL
万方数据
