ABSTRACT
This study is focused on erosion of unsaturated river embankment due to flow overtopping and mainly on resultant flood and sediment inflow discharges into land-side area. The experimental results of embankments made by non-cohesive fine sediments show that rate of erosion in small sized sediment is smaller comparing with bigger sized sediment. Shear strength due to suction plays vital role in erosion of unsaturated fine sediments. As the model which is considering the infiltration process inside the embankment body and resisting shear stress due to suction on surface erosion has already been developed by authors’ research group, the main objectives of this study are to verify the developed model from the viewpoint of flood and sediment discharges through the experiments. The simulated results of embankment surface erosion, infiltration process, and resultant flood and sediment discharges are compared with some experimental results in this paper.
