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堆积层斜坡是第四系及近代松散堆积层的一类斜坡,也是滑坡灾害中主要灾种之一,然而一直以来缺乏专门针对堆积层斜坡的稳定性分级。该文以三峡库区为研究对象,选取堆积层斜坡11个主要影响因子并对单因子进行划分,建立因子层次结构。运用层次分析(AHP)和模糊数学(FM)方法,通过对影响因子进行权重分析以及建立堆积层斜坡稳定性分级隶属函数,将堆积层斜坡稳定性分为四级并建立了堆积层斜坡稳定性分级系统,为堆积层滑坡的合理防治方案提供帮助。最后通过工程实例验证,与极限平衡法结果对比效果良好。
Stacked slopes are a type of slope in the Quaternary and modern loosely accumulated layers and are also one of the major landslide hazards. However, there has been a lack of stability classification specifically for the slope of the stratum. Taking the Three Gorges reservoir area as the research object, 11 main influencing factors of the slope of the deposit are selected and the single factor is divided to establish the factor hierarchy. By AHP and fuzzy mathematics (FM), the slope stability of the stratum is divided into four levels by weight analysis of the influencing factors and the hierarchical membership function of slope stability of stratum, and the slope stability of stratum is established Grading system, for the accumulation of landslides to provide a reasonable prevention and control programs. Finally, it is verified by engineering examples that it works well with the result of limit equilibrium method.