The Distinct Element Method Simulation of'Trap Performance of Check Dams used for Wood Contained Debris Flow

摘要

This paper proposes an application of the distinct element method on damming up performance of steel frame check dams subjected to the debris flows containing drift woods. In order to simulate the performance of drift woods in debris flow, a cylindrical shape element is developed. The debris flow experiments, with various combinations of the woody debris and the interval of anti drift woods structures, are carried out in advance. Those results are simulated by proposed method. Simulation results are in good agreement with the experimental results.