Abstract:
The movement distances, velocity variation and accumulative body thickness are the important assessment indicators for evaluation of disaster area and disaster intensity. The complex movement mechanisms make the prediction of this disaster very difficult. A series of laboratory landslide model tests were conducted to analyze the influence of rock mass type, slope gradient and landslide volume on its movement parameters. The experimental results show that the movement distance of the landslide-debris flow is controlled by the rock mass type, which is increased with the increase of debris particle size. With the increase of slope gradient, the landslide changed from stage-starting to whole starting. The speed characteristics caused by the slope toe impacting are the cause to the difference of the movement distance and the thickness under the same scale landslide. Meanwhile, the larger the landslide is, the longer the moving distance is, which is consistent with scale effect of landslide.