基于层次分析法的采空区稳定性评价

Stability Evaluation of Goaf Based on Analytic Hierarchy Process

对武云高速公路下伏采空区稳定性进行了模糊综合评价。根据采空区的实际地质采矿条件及武云高速公路建设情况,选取19个影响因子建立了模糊综合评价的二级评判模型。采用层次分析法(AHP)确定了评判因子的模糊权重集合,采用专家打分法对定性因子进行评价,采用柯西分布函数和三相线性函数对定量因子进行评价,得到所有影响因子的模糊评价矩阵,最后根据权重集合和评价矩阵按二级评判模型完成采空区的模糊综合评价。评价结果表明:所建立的二级评判模型能客观、准确的反映所评价的采空区稳定性程度,是一种可靠、有效的评判方法。

We carried out fuzzy comprehensive evaluation on the stability of goaf under the condition of Wuyun expressway. According to the actual geological and mining conditions of the mined out area and the construction of Wuyun expressway, 19 factors are selected to establish the two levels model of fuzzy comprehensive evaluation. We use the analytic hierarchy process（AHP） to determine the weight set of fuzzy evaluation factors, and use expert scoring method to evaluate the qualitative factors, and use Cauchy distribution function and linear function to evaluate quantitative factors, and obtain fuzzy evaluation matrix of all influence factors. Finally, according to the weight set and evaluation matrix of fuzzy, the comprehensive evaluation of goaf could be completed. The results show that the two-grade evaluation model can objectively and accurately reflect the stability of the goaf, which is a reliable and effective evaluation method.