基于模糊相似优先比的黄土路堑高边坡稳定性评价  

Research on Stability of Highway Loess Cutting-Slope Based on Fuzzy Analogy Preferred Ratio

作　　者：高德彬[1] 李邦旭[1] 何秦娥[1] 

机构地区：[1]长安大学地质工程与测与测绘工程学院,陕西西安710054

出　　处：《灾害学》2007年第3期41-44,共4页Journal of Catastrophology

基　　金：交通部西部重点交通建设科技项目(200131800020)

摘　　要：充分挖掘大量已知其稳定性状况的公路黄土路堑高边坡,根据模糊相似优先比的概念,构造了一个基于模糊变权相似优先的边坡范例推理模型。对每一个黄土边坡稳定性的影响因素,分别建立边坡的目标范例与源范例之间的模糊相似优先关系。经过影响因素之间的两两比较,获得了不同的影响因素下边坡的目标范例与源范例之间的相似性序列,在确定影响因素各自的权重之后,经计算可获得边坡的目标范例与源范例之间的综合相似性序列,从而最终找出与边坡的目标范例最相似的源范例,进而实现了黄土边坡目标范例的稳定性评价。实例分析表明:边坡稳定性评价结果与其实际状态吻合较好。Utilizing lots of data of loess cutting-slopes of which the stability is known, based on fuzzy analogypreferred ratio, a relative slope base case indexing model is set up. In this model, the fuzzy analogy preferred relationship between slope target case and slope base case is determined, and the similar series between two casesseries between the two cases is determined, and the most similar base case to the slope target case in the base cases of slope is found. Finally, the slope stability of target case is evaluated. The examples show that the result of stability evaluation of the slope is the same as the practical state.

关 键 词：模糊相似优先比 公路 黄土 路堑高边坡 稳定性 

分 类 号：P642.22[天文地球—工程地质学] O159[天文地球—地质矿产勘探]