1-D SEDIMENT NUMERICAL MODEL AND ITS APPLICATION

A one dimensional sediment numerical model SUSBED-2 has been developed to predict the aggradation and degradation of riverbed based on energy equation of the steady flow, nonuniform sediment transport equations for suspended load and bedload, sediment continuity equation and riverbed material composition equation. An improvement method to solve sediment transport equation of suspended load make the model can get better results for fast expanding or narrowing river reaches and for the reaches with lateral inflow. The model has been verified by field measurements and the results are generally fitted well in with the measurements. The model has been used in the design work of more than 40 projects of hydropower and water resources