INTERACTION BETWEEN BED DEFORMATION AND BANK EROSION AND ITS EFFECT ON THE FORMATION PROCESS OF BRAIDED STREAMS

Abstract

Channel evolution of braided stream was studied numerically in the present study. Slopecollapse model and modified bedload function were included in the numerical model whose validity had been almost verified. The formation and developing mechanism of each braided channels is the one of the target to be understood physically. The interaction between a bed deformation and a bank erosion in this process is the other main point to be investigated. On the basis of the enormous number of data obtained by the numerical experiments under the different conditions, the important and interesting remarks on the above two points were found and discussed here.