基于模糊-层次分析理论的复杂采空区危险性分析

Analysis on the risk of mined out area based on fuzzy evaluation and analytic hierarchy process

影响采空区危险性因素是多方面的,而且各种影响因素的重要程度有很大差别。基于模糊-层次分析理论对采空区进行综合评判,可在评判过程中按各影响因素的类型建立二级模糊评判模型,对可定量的影响因素采用三相线性隶属函数求解定量因素,对定性的影响因素通过专家打分法来进行量级划分,进而确定判断矩阵;层次分析理论可分析影响采空区危险性各种类型指标等因素,建立评估因素权重集,将判断矩阵与因素权重集运算,可为采空区危险性综合评判提供可靠的理论技术支撑。

There are many risk factors affecting mined out area, and the extent of importance about each factor is very different. This paper is to conduct a comprehensive evaluation about the risk of the mined-out area on the basis of the principJe of fuzzy mathematics and AHP. In the process a factor set for evaluation will be set according to the types of the factors to establish a two-stage fuzzy evaluation model;and use three phase linear laws to determine a member- ship function in order to solve the quantitative elements;then quantize and divide the qualitative factors through expert scoring method to determine the judgment matrix ; use the analytic hierarchy process to analyze factors affecting the risk of mined-out area,therefore set a weight assembly of evaluation factors. And then deal the judgment matrix and the weight assembly,which has provided a reliable theory support for the risk determination in mined-out area.