基于AHP法山区公路边坡稳定性评价及危害性分析

Stability Evaluation and Hazard Analysis of Mountain Road Slopes Based on AHP Method

在对山区公路两侧边坡发生崩滑灾害深入研究的基础上,对其稳定性以及危害程度进行了分析探讨。对于边坡稳定性,采用了赤平投影定性方法和极限平衡定量方法对其稳定程度开展了研究计算。对于山区公路遭受崩滑灾害的危害性,确定了影响致灾体的危害程度的三个影响因子,即“交通量、规模以及高度”。在此基础上,对每个因素的权重加以赋值,构建相关公式,计算各个指标的隶属度,建立隶属度与指标的相互函数关系。从而在运用AHP法对具体的边坡的危害程度进行分析。在确定了边坡稳定性及崩滑危害程度的基础上,还可以进一步确定崩滑隐患的危险性。

On the basis of in-depth research on the landslide disasters on both sides of mountain roads,the stability and degree of harm were analyzed and discussed.For slope stability,the qualitative method of stereographic projection and the quantitative method of limit equilibrium were used to study and calculate its stability degree.Three influencing factors,namely"traffic volume,scale,and height,"have been determined to determine the degree of harm caused by landslides on mountainous roads.On this basis,this article assigned weights to each factor,constructed relevant formulas,calculated the membership degree of each indicator,and established a functional relationship between membership degree and indicators.Thus,the AHP method can be used to analyze the degree of harm to specific slopes.On the basis of determining the stability of the slope and the degree of collapse hazards,the danger of collapse hazards can also be further determined.