简述滑坡稳定计算参数的影响因素

Impact Factors on Landslide Stability Computing Parameters

在滑坡勘察阶段,滑坡稳定性计算参数取值受到多种因素的影响。通过分析滑坡下滑推力计算过程中滑带土体的剪切强度指标—内摩擦角(φ)、内聚力(c)及滑体土的容重(γ)的影响因素,认为应力状态、应变特征、加荷速率与孔隙水压力、土体的不均匀性和不等向性以及试验方法的选择等都对上述参数的计算产生重大影响。并以三峡库区某滑体为例,说明了各种参数的取值方法。

In the landslide investigation stage,values of stability computing parameters have impacted from multiple factors.Through impacting factors of sliding zone soil shear strength indices： angle of internal friction（φ）,cohesion（c） and bulk density of sliding soil（γ） in the landslide downslide thrust computing process analysis,considered that stress state,strain property,rate of loading and pore water pressure,soil mass non homogeneity and anisotropy as well as testing method selection all have major impact on above parameters computing.To take a sliding mass in the Three Gorges reservoir region as an example,illustrated various parameters value adoption methods.