基于AHP与粗糙集理论的采空区稳定性影响因素权重分析

为充分吸收层次分析法和粗糙集理论两类评价方法的优点，同时又能克服各自的缺陷，实现二者的优势互补，通过建立采空区稳定性影响因素综合评价指标体系，以层次分析法确定主观权重、粗糙集理论确定客观权重，然后将主、客观权重进行有机集成得到组合权重，使得采空区稳定性影响因素的评价更具客观性，从而提高采空区稳定性影响因素评价的精度。以老鸦巢矿区为例，构建了13个指标的综合评价指标体系，通过计算组合权重得到影响采空区稳定性的主要因素为高跨比、地质构造、最大暴露面积，这与矿山实际情况基本符合。

Weights analysis of factors affecting the stability of mined-out areas based on analytic hierarchy process and rough sets theory

In order to totally absorb the advantages of analytic hierarchy process （AHP）and rough sets theory evaluation methods, overcome the weaknesses and realize the complementary advantages, the synthetic assessment index system of factors affecting the stability of Mined-out areas was established, AHP was used to determine subjective weight; and rough set method was used to determine objective weigh. The subjective and objective weights would be organically integrated, from which the combination weight of factors affecting the stability of mined-out areas could be obtained. The proposed approach made the risk assessment for factors affecting the stability of mined-out areas more objective and improved the precision of risk assessment for factors affecting the stability of mined-out areas. The comprehensive evaluation system was build up in Laoyachao mine, which consisted of 13 indexes. The main factors affecting the stability of mined-out areas were High-Span Ratio, geological structure, the maximum horizontal exposed area, which was according with mine＇s actual situation.