Simulation of landslide / debris flow runout process in Ailaoshan using Voellmy model

Landslide and debris flow are two common geological hazard types in the South-western mountainous area in China. One of the key factors for hazard assessment of landslides and debris flows is their post-initiation mobility. First, the runout process of Bajiaoshu landslide/debris flow was simulated with the Voellmy frictional model, and parameters were obtained. Then the simulation parameters were used to simulate the runout process of Nan’en School landslide for runout prediction and hazard assessment. The results proved to be consistent with field investigation results and earlier hazard assessment conclusions.

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