露天矿端帮采煤机开采参数设计方法

为了提高端帮压煤回采率，保证端帮采煤机作业安全，分析了平朔东露天煤矿端帮压煤开采可行性，提出了端帮压煤开采参数设计方法，包括端帮采煤机工作区域参数设计方法以及煤柱参数计算方法，并验证了煤层上覆岩体安全厚度，采用Midas GTS NX有限元软件模拟了端帮压煤开采后的边坡稳定性情况。研究结果显示，东露天矿端帮压煤采用端帮采煤机开采方案可行，设计端帮采煤机工作区域长度80m，宽度40m，端帮采煤机水平最大开采深度300m。单排采巷条件下设计4煤支撑煤柱宽度50m，隔离煤柱宽度20m，9煤支撑煤柱宽度60m，隔离煤柱宽度24m。上覆岩体厚度满足安全要求，端帮压煤开采后端帮边坡较为稳定。

Design method of mining parameters for end slope shearer in surface mine

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.