梅州抽水蓄能电站水库泥沙数学模型开发及应用

Development and Application of Reservoir Sedimentation Mathematical Model for Meizhou Pumped-storage Power Station

抽水蓄能电站泥沙问题研究的重点是如何控制过机含沙量及有效库容淤损。结合梅州抽水蓄能电站的水沙特点,探析了抽水蓄能电站泥沙冲淤及过机含沙量的计算方法;在常规水库泥沙数学模型的基础上,扩展上下水库水沙交换及联算、过机含沙量计算等模块,建立了抽水蓄能电站泥沙数学模型;通过数学模型计算,分析了过机含沙量、级配及河道冲淤形态。

The research focus on the sedimentation problem of pumped-storage power station is how to control the sediment content passing through the pump-turbines and the effective storage capacity of reservoir.Combined with the characteristics of water and sediment of Meizhou Pumped-storage Power Station,the calculation methods of reservoir sedimentation and sediment passing through the pump-turbines are analyzed.Based on conventional mathematical model of reservoir sedimentation,the calculation modules for the water and sand exchange between upper and lower reservoirs and the sediment content passing through the pump-turbines are also extended and improved.Finally,the numerical model of reservoir sedimentation for the Station is established.Based on the model,the content and gradation of sediment passing through the pump-turbines and the erosion and sedimentation of river channel are analyzed respectively.