抄録
Recent years, slit Sabo dams have been installed for their function to prevent debris flow disaster and conserve continuity of water and sediment flow simultaneously. Because the sediment transportation is a phenomenon for a long term, numerical simulation models for sediment runoff are necessary to clarify the effect of the slit Sabo dams. However, though there are many simulation models to predicting the sediment runoff, the methods for modeling the slit dams have not been established. Therefore, the authors developed a numerical simulation model for sediment runoff simulation of the basin with slit Sabo dams by combining a rainfall runoff model and a quasi-2D bed variation model. It is applied to the Ogamo river basin in Tottori prefecture, Japan. This paper reports the method of developing the model and the results of the estimation of the sediment runoff.
