露天矿合理拉沟位置的确定对露天矿生产接续、剥采比控制具有重要影响.本文应用层次分析的基本决策理论,建立露天矿拉沟位置方案综合评价分析模型,结合内蒙古宝日希勒露天煤矿煤层赋存情况及开采现状,分析了三采区上部煤层采空区重新拉沟、开采下部煤层的可行性及必要性.依据露天矿拉沟位置的选择原则以及该矿的特殊地质地形条件,设计两个拉沟位置方案,分别分析各因素对下部煤层拉沟位置选择的影响.利用层次分析法,分析比较各方案的优缺点,最终确定出最合理的拉沟位置方案.结果表明,层次分析法的评价结果符合实际情况,且计算简单,具有较强的实用性.
The determination of open-pit reasonable trenching position has important influence to open-pit mine production continue and stripping control. The essay applicate the basic decision theory of analytic hierarchy, construct hierarchical analysis model of comprehensive evaluation of open-pit mine trenching position scheme, combined with the coal storage and present situation of mining in Inner Mongolia Baorixile open-pit mine, explain the feasibility and the necessity of the coal mine ditch in the mined out area of three mining the upper coal seam and exploit the lower coal seam. According to the choosing principle of open- pit trenching position and the mine special geological and topographic conditions, design two trenching position optimization, and analyzes the influence of various factors on the lower coal seam trenching position selection. Using the analytic hierarchy process, analysis of the advantages and disadvantages of each scheme comparison, eventually determine the most reasonable trenching position scheme. The result shows that: the evaluation result of analytic hierarchy process accords the actual situation, simple calculation, and has stronger practicability.
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