Abstract
The purpose of this paper is to study the effect of bedload transport on the erosion rate characteristics of cohesive sediment. The results of flume experiment and the dynamic shear stress on the bed are discussed. The sediment feeding of the bedload transport rate is varied from 0 to 150% of the equilibrium sediment transport rate. Two kinds of sand, which have fine and coarse sediment size, are used to produce the bedload transport. The results show that the erosion rate of cohesive sediment will increase when the volume of the sediment feeding increase under the small rate conditions. However, after achieving a certain volume of the sediment feeding, the erosion rate of cohesive sediment will decrease. This tendency indicates that the relation between the volume of bedload transport and erosion rate of cohesive sediment is non-linear function.
