基于层次分析法和模糊数学理论的露天矿边坡稳定性分析

Analysis of Slope Stability in Open Pit Mines Based on Analytic Hierarchy Process and Fuzzy Mathematics Theory

为综合评价生产过程中露天矿边坡稳定性,基于层次分析法及模糊数学理论建立分析模型对边坡稳定性进行评价。充分考虑影响露天矿边坡稳定性的工程地质、几何条件、水文气象及外加荷载等要素,建立共14项分指标的两级评价指标体系。根据不同分指标对露天矿边坡稳定性影响的趋势特征,建立相应指标的隶属度模糊矩阵和权重集合;构造基于二级层次分析的模糊综合评判体系,并对露天矿山边坡稳定性进行评价。研究表明,基于层次分析法及模糊数学理论的露天矿边坡稳定性评判方法计算简单、实用,评判结果与实际情况较为吻合,可为露天矿边坡稳定性评价提供指导与帮助。

To comprehensively evaluate the stability of open-pit mine slopes during the production process,an analytical model is established based on the Analytic Hierarchy Process and fuzzy mathematics theory to evaluate the stability of slopes.Fully consider the engineering geology,geometric conditions,hydrology and meteorology,and external loads that affect the stability of open-pit mine slopes,and establish a two-level evaluation index system consisting of 14 sub indicators.Based on the trend characteristics of the impact of different sub indicators on the stability of open-pit mine slopes,establish a membership fuzzy matrix and weight set for the corresponding indicators;Construct a fuzzy comprehensive evaluation system based on two-level analytic hierarchy process and evaluate the stability of open-pit mine slopes.Research has shown that the stability evaluation method for open-pit mine slopes based on Analytic Hierarchy Process and Fuzzy Mathematics theory is simple and practical in calculation,and the evaluation results are in good agreement with the actual situation.It can provide guidance and assistance for the stability evaluation of open-pit mine slopes.