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滑坡体积和地形地貌是影响滑坡滑动距离的两个重要因素。在对“5·12”汶川地震诱发的滑坡进行详细调查的基础上,对46个典型地震滑坡的滑动距离与滑坡体积以及原始斜坡坡角的相关关系进行了统计分析。结果表明,汶川地震滑坡的水平滑动距离、垂直滑动距离均与滑坡体积的对数值具有良好的指数函数增长关系,相关系数R2分别为0.8244和0.7859;等效摩擦系数与原斜坡坡角正切值之间具有良好的线性增长趋势,相关系数R2为0.7973。基于此,通过二元线性回归,获得了滑坡水平滑动距离与滑坡体积、滑坡前后缘高差以及原始斜坡坡角的相关关系。
Landslide volume and topography are two important factors affecting landslide sliding distance. Based on the detailed investigation of the landslide triggered by Wenchuan Earthquake on May 12, 2005, the relationship between the sliding distance of 46 typical earthquake landslides and the landslide volume and the original slope angle was statistically analyzed. The results show that both the horizontal sliding distance and the vertical sliding distance of Wenchuan earthquake landslide have a good exponential growth relationship with the logarithm of landslide volume, and the correlation coefficients R2 are 0.8244 and 0.7859 respectively. The equivalent coefficient of friction and the slope tangent of the original slope There is a good trend of linear growth, the correlation coefficient R2 is 0.7973. Based on this, through the binary linear regression, the correlation between the landslide horizontal sliding distance and the landslide volume, the landslide front and rear height difference and the original slope angle is obtained.