NUMERICAL SIMULATION OF RIVER-EMBANKMENT EROSION DUE TO OVERFLOW BY PARTICLE METHOD

Because a frequency of heavy and concentrated rain may tend to increase in these days, danger of overtopping flow of river embankment becomes to be higher. Hence, it is strongly required to estimate a critical state of embankment failure under an overtopping flow in designing a river embankment. In this study, numerical simulations of an overtopping flow of an river embankment are carried out by a particle method. Hydraulic characteristics of a flow and forces acting on an embankment calculated by the particle method are compared with a hydraulic experiment. Furthermore, erosion process of an embankment due to an overtopping flow is simulated.