基于层次分析法的工程模糊集理论在公路边坡稳定性评价中的应用

Application of engineering fuzzy set theory analysis on AHP to highway slope stability evaluation

为了更准确合理地评价公路边坡的稳定性,在对常用评价方法比较的基础上,分析了有关的模糊因素,建立了模糊判断矩阵模型,结合层次分析法确定了各评价指标的目标权重,运用工程模糊集理论对公路边坡的稳定性进行了综合评价。应用该评价模型对安康至陕川界高速公路典型边坡的稳定性进行了综合评价,并有效指导了工程建设。

The paper aims to present the authors＇ research on appli- cation of engineering fuzzy set theory analysis to highway slop stability evaluation by using analytic hierarchy processing （AHP）. Many methods, which used to analysis highway slope stability, are com- pared in the paper. On the basis of research on the general slope sta- bility evaluation methods, lots of fuzzy factors of stability evaluation for highway slope are researched and fuzzy comparison matrix model is established. Correspondence relationship between the mood opera- tor and fuzzy value are determined. Evaluation indicators and grading standards are identified on the basis of engineering practice. The weight of every index is obtained by using analytic hierarchy process- ing and the method of Ridge-type distribution, which the method of comhining with the bigger the more excellent and the smaller the more excellent. Engineering fuzzy set theory is used to make a comprehen- sive evaluation, overall evaluation of the highway slope stability is ob- tained according to the principle of maximum degree of membership and the result of membership degree vector. Slope stability evaluation of AN-SHAN Expressway is analyzed with analytical hierarchy pro- tess. Evaluation results provide a basis for the progress of the pro- ject, and the project carried out smoothly with the guidance of it. The results show that the model makes slope stability evaluation more comprehensive, scientific and rational.