Abstract
Taking the remaining resource areas of the Baorixile open-pit coal mine in the Chenbalhu Banner mining area as the premise, the optimization problem of the remaining mining area division plan of the Baorixile open-pit coal mine was studied. Based on fully considering the current production situation, an improved analytic hierarchy process (AHP) and entropy weight method (EWM) combined with the method of approaching the ideal solution (TOPSIS) were constructed to conduct theoretical research using a multi-scheme and multi-index scheme optimization model, and combined it with A comparative analysis of two traditional evaluation models, the AHP method and the uncombined EWM method was conducted, and the advantages of the improved AHP-EWM method over the traditional method were elaborated. Then, the three remaining mining area division schemes proposed for the Baorixile open-pit coal mine were analyzed. In the case of twelve evaluation indicators, the closeness of the three decision-making schemes to the positive and negative ideal points of the TOPSIS method was calculated. Based on the principle that the decision-making scheme is closest to the positive ideal solution, the decision-making scheme was selected in terms of economic benefits, long-term development, and subsequent mining area continuation—the optimal decision-making solution from all angles. Option three also verified the effectiveness and practicability of the improved AHP-EWM method. It provided reference value for other open-pit coal mines to propose various mining area division decision-making plans with certain theoretical and practical significance.