STUDY ON ONE DIMENSIONAL MUMERICAL SIMULATION OF DEBRIS FLOW

Abstract

Many numerical simulations of debris flow have been conducted. However, not only basic equations of debris flow are quite different respectively, but also the numerical analyses are conducted by researchers due to their approaches to the flow mechanism. The present study describes a method of one-dimensional numerical simulation, based on a flow model suggested by Egashira and Miyamoto. The results show the treatment of sediment entrainment, especially, the treatment of the front parts of debris flow by taking the dynamic condition on the bed surface into account.