不同输沙流态对多沙河流水库水沙调节计算结果影响的分析研究

Analysis and Research on Influence of Different Sediment Flow Forms to Water and Sediment Regulation Calculation in Sediment-laden River Reservoir

在利用水沙数学模型进行多沙河流水库水沙调节计算时,准确的预判相应的来水来沙条件和库型边界条件下入库含沙水流的输沙流态并确定相应的控制方程,是确保计算结果准确的关键。通过建立水库一维非饱和输沙数学模型,对相同库型条件和相同来水来沙条件时不同输沙流态时入库水流的泥沙冲於量进行计算,初步量化回答了不同输沙流态对多沙河流水库水沙调节计算结果的影响。

When using the mathematical models in the water and sediment regulation calculation for sediment-laden rivers,the accurate prediction for the sediment flow forms and determination for the corresponding flow equations under the corresponding water and sediment conditions and reservoir types and boundary conditions are the key to ensure the accurate results in the water and sediment regulation calculation.Here,on the basis of the mathematical model for the one-dimensional unsaturated sediment transport of reservoir,the amounts of sediment scouring and deposition under the conditions of same reservoir type with different sediment flow forms are calculated,and the calculation results from sediment-laden river＇s water and sediment regulation calculation in different sediment flow forms are quantified initially.