The Numerical Simulation Of The Non-equilibrium Transportation Of Suspended Sediment And The Erosion Prediction Of Rivers

The 1-D full load mathematical has been applied brodly in the engineering domain such as flood control,shiping,natural river sediment and reservoir sediment. In this paper, based on the systematic analysis of the present situation of the sediment mathematical, a 1-D mathematical mold for unsteady flow and a non-equilibrium transportation model of non-uniform suspended load has been established to forecast the erosion and deposition. Based on the verification of the erosion and deposition between Qintong Gorge and Shizhuisan of Yellow River, this paper predicts the erosion and deposition of this reach, July 2010 to June 2016. Finally, according to the result of erosion and deposition forecasts, calculate the water level under different flow. There are six chapters in this paper:Chapter 1 is the introduction. The present situation and the main numerical scheme of the suspended sediment model were concluded by the numbers. Based on these, the main work of the paper is put forward.In chapter 2, the non-equilibrium transportation model of non-uniform suspended load has been established some methods have been expatiated systematically.In chapter 3, the adjustment of the suspended sediment particle size and bed size is calculated by using the simulation to the general river model. A series of result get by this simulation suggest that the model in this paper can reflect the changes in the process of sediment gradation.In chapter 4, the non-equilibrium transportation model has been applied in order to forecast the erosion and deposition of the natural river. It includes three parts. Firstly, model has been used to verify the erosion and deposition between Qintong Gorge and Shizhuisan of Yellow River. Secondly, model has applied to predict the erosion and deposition of this reach, July 2010 to June 2016. Finally, according to the result of erosion and deposition forecasts, calculate the water level under different flow.Chapter 5 is the conclusion and outlook. To sum up the whole paper and prospect further research work in the future.