关键词: 露天矿, 端帮采煤机, 开采参数, 边坡稳定

Abstract: In order to improve the recovery rate of end wall pressure coal and ensure the operation safety of end wall shearer, the feasibility of end wall pressure coal mining in Pingshuo east surface coal mine were analyzed, and the design method of end wall pressure coal mining parameters was put forward, including the design method of working area parameters of end wall shearer and the calculation method of coal pillar parameters. The safety thickness of the overlying rock mass was verified, and the slope stability after the end wall coal mining wsa simulated by Midas GTS NX finite element software. The results show that the mining scheme of end wall shearer is feasible. The designed working area of end wall shearer is 80m in length, 40m in width and 300m in maximum horizontal mining depth. Under the condition of single row roadway, the width of support pillar and isolation pillar of No4 coal are 5m and 20m respectively, of No9 coal are 6m and 24m respectively. The thickness of the overlying rock mass meets the safety requirements, and the back-end side slope of the end wall coal mining is relatively stable.