中文摘要：

现场调查的数据分析表明：同等规模体积的中、小型滑坡碎屑流的运动参数存在较大的差异,这些参数的差异源于滑坡体积、岩土体特性和地形条件耦合作用的结果,理论分析和数值计算常常不能完全解释其机理。因此,在模型试验的基础上,运用极差、方差分析等方法,探讨了滑坡碎屑流的体积、颗粒级配和斜坡坡度对坡脚下的水平运动距离、等效摩擦系数的影响。研究表明：滑坡碎屑流体积在同等规模等级和相同的落差条件下,3种因素对坡脚下水平运动距离的影响大小依次为颗粒级配、斜坡坡度和体积。颗粒级配对碎屑流坡脚下的水平运动距离的影响非常显著,而同等规模内变化的体积的影响不显著。因素对等效摩擦系数的影响大小顺序为斜坡坡度、颗粒级配和体积。坡度对碎屑流等效摩擦系数的影响非常显著,而同等规模内变化的体积的影响不显著。

英文摘要：

The movement parameters of middle and small landslide-debris avalanches were significant differences in the same scale volumes based on the field investigation data. The differences result in the couple effect among the volumes, soil-mass and topography which were not completely discovered by the theory analysis and numerical cal- culation. Therefore, Laboratory experiments, extreme difference analysis and variance analysis are used to investi- gate some factors influencing the movement of landslide-debris avalanches, including volumes, particle sizes and gradients of slope. In the conditions of the volume change in the same scale and identical fall height, the results showed as follows. The particle size was the most important factor which influenced on the horizontal movement dis- tances after slope toe, followed by gradient of slope, volume in turn. The particle size was the critical factor for the distances and volume change in the same scale was not. The gradient of slope was the most important influential factor on the apparent coefficients of friction, followed by particle size and volume. The gradient of slope played an important role of controlling the apparent coefficients of friction. The volume was the insignificant one of the parameters.