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位于九寨沟双河乡的草坪上滑坡属高烈度大型滑坡,一旦失稳,危害严重。通过对滑坡地质背景、结构特征和变形破坏特征的分析,确定该滑坡变形属重力蠕滑型。结合试验资料,通过参数反演确定计算参数,利用传递系数法对滑坡稳定性进行定量评价。评价表明,在天然、地震或暴雨工况下,滑体整体处于稳定状态。暴雨条件下,其前缘稳定性迅速降低,可能失稳。
The landslide located on the lawn of Shuanghe Township, Jiuzhaigou is a large-scale landslide with high intensity. Once it is instable, the landslide is seriously endangered. Based on the analysis of the landslide geological background, structural features and deformation and failure characteristics, it is determined that the deformation of the landslide belongs to the gravitational creep type. Combined with the experimental data, the parameters were determined by parameter inversion and the landslide stability was quantitatively evaluated by using the transfer coefficient method. Evaluation shows that in natural, earthquake or heavy rain conditions, the overall slide in a stable state. Under the condition of heavy rain, the stability of its leading edge decreases rapidly and may be unstable.