基于变权靶心贴近度的黄土边坡稳定性评价

Stability Evaluation of Loess Slope of Cut Based on Degree of Approaching to Target with Variable Weight

针对影响黄土边坡稳定性因素的复杂性和模糊性,将变权靶心贴近度与边坡稳定性评价相结合,将单指标关联函数的最大值作为其评价类的靶心坐标,根据样本与靶心的贴近度,对样本进行分类。通过参数正交试验分析确定权重,建立了适合变权靶心贴近度的边坡稳定性分类标准,实现了定性与定量相结合评价黄土边坡的稳定性。实例评价结果与定值计算、工程实际调查吻合良好。

Because of the complexity and fuzzy of loess slope stability, this paper uses the maximum value of correlation function for single index as the eye of target combined degree approaching to target with variable weights with slope stability evaluation, and the samples are classified according to the approaching degree between samples and target eye. The weights are calculated by orthogonal test,the slope stability classification standard that suitable for degree of approaching to target with variable weight is proposed.The example evaluation consequence agrees with the results of fixed value calculation and project reality investigation.