【摘要】 为了解决端帮易滑区难以有效实施靠帮开采造成大量压煤的问题,基于时效边坡理论和靠帮开采技术,提出了垂直和平行端帮走向推进的2种条分式靠帮开采方案,并建立了确定最佳采掘带宽度的分析系统。根据系统流程,对三道岭露天矿端帮易滑区实行条分式靠帮开采进行了数值模拟,得到了最佳条带宽度为60 m,并推荐采用垂直端帮走向推进的方案。结果表明:东端帮边坡角可从34°提高到41°,回收端帮残煤19.31万t。易滑区边坡实行条分式靠帮开采,可以保证边坡稳定,同时回收残煤,降低剥采比。更多还原

【Abstract】 In order to solve the problem that a lot of coal is covered in slippery area of end-slope for steep mining is difficult to be implemented,based on the theory of slope timeliness and the steep mining technology,two strip steep mining methods as vertical and parallel propelling were proposed and the analysis system for confirming the best cut width was established.According to the systematical sequence,numerical simulation was conducted with strip steep mining method in slippery area of end-slope in Sandaoling open coal mine,which drew a conclusion that the best cut width of the slope is 60 meters,and the scheme of advancing vertical end-slope trend is recommended in the paper.The results reveal that the angle of eastern end-slope can be increased from 34° to 41 °,which will recover 193,100 tons of coal residues in end-slope.It could ensure slope stability,recycle residual coal and reduce the stripping ratio by applying strip steep mining method in slippery slope.更多还原