基于模糊层次分析法的采动地裂缝发育等级评价——以沁水煤田为例

煤炭资源的开采对生态环境造有极大破坏。为准确掌握采煤裂缝的诱发因素、发育规律并对裂缝发育等级进行预测，基于层次分析法和模糊综合评价法建立采动地裂缝发育等级评价模型。根据工程条件，确定合适的评价指标体系，依据层次分析法确定各评价指标权重，通过模糊数学方法构造隶属函数，并以某矿80806与80808工作面为研究背景，对地裂缝发育情况进行模糊综合评价。结果表明：工作面上方地表裂缝发育情况与所提出评价方法的评价结果匹配良好，说明所提出的评价方法适合该煤矿的采动地裂缝发育等级评价，评价结果对开采沉陷损害程度评价具有一定的指导意义。

Grade Evaluation of Mining Ground Cracks Development Based on Fuzzy Analytic Hierarchy Process

The mining of coal resources has great damage to the ecological environment. In order to accurately grasp the inducing factors and development rules of coal mining cracks and predict the development grade of cracks, an evaluation model of mining ground cracks development grade was established based on analytic hierarchy process (AHP) and fuzzy comprehensive evaluation method. According to the engineering conditions, the appropriate evaluation index system was determined, the weight of each evaluation index was determined according to the AHP, and the membership function was constructed by fuzzy mathematics method. Taking 80806 and 80808 working faces of a coal mine as the research background, the fuzzy comprehensive evaluation of the development of ground cracks was carried out. The results show that the development of surface cracks above the working face matches well with the evaluation results of the proposed evaluation method. It shows that the evaluation method is suitable for the grade evaluation of mining-induced ground cracks development in this coal mine, and the evaluation results have a certain guiding significance for the evaluation of mining subsidence damage degree.