Author(s): Yang Fei; Wang Qiang; Wang Yuanjian

Linked Author(s): Fei Yang

Keywords: Reservoir; Water and Sediment Regulation; Water and Sediment Transport Model; Yellow River

Abstract: Sediment transport simulation is the technical foundation of the water and sediment regulation (WSR) which aims to alleviate the sedimentation problem on Yellow River. This paper introduces a hydrodynamic model for sediment transportation simulation in reservoirs. The generation and move process of turbidity currents and the open channel flow was coupled together. The incipient shear stress of consolidated deposition was considered as adjustable parameter adept to different conditions. The model enables to simulation flow and sediment transport in different reservoirs on Yellow River. The joint operation of key reservoirs in the upper and middle reaches of Yellow River was overviewed. Practical application has proven that it is capable of handling the joint WSR in reservoir groups. Water-sediment spatial matching between reservoirs would affect sediment discharge. Operations of adjacent reservoirs should be matched whereas the downstream reservoir low water level encounters with upstream discharge peak. The drawdown flushing duration should depend on the sediment available for scouring. Monotonous one-step drawdown process is desirable to ensure the full development of erosion.

DOI: https://doi.org/10.3850/iahr-hic2483430201-134

Year: 2024