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汾河水库上游为黄土高原区，水土流失非常严重，水库泥沙淤积速度较快．对汾河水库上游无站控制流域面积的水沙量，经过系统分析建立了与上静游水文站的相关关系，并通过入库泥沙的级配及水沙平衡关系确定了淤积泥沙的平密度．在此基础上，采用水动力学的计算方法，建立了一维泥沙冲淤计算数学模型，根据汾河水库建库以来实际的来水来沙条件及水库运用情况，对模型参数进行了李定，并利用各库段的实测资料对模型进行了验证．该模型的建立为今后预报不同运用方案或不同来水来沙情况下水库的冲淤变化情况提供了可行的方法．
The upstream of Fenhe Reservoir is the Loess Plateau, soil erosion is very serious, and sedimentation speed of reservoir is fast. Based on the systematic analysis of the sediment concentration in the upper reaches of Fenhe Reservoir, the relationship between the sediment and the upper hydrostatic hydrological station was established. The siltation of sediment Flat density. Based on this, a mathematical model of sediment scouring and silting is established by hydrodynamics calculation method. According to the actual incoming water and sediment conditions and the reservoir operation since Fenhe Reservoir was built, the model parameters The model was verified by using the measured data of each bin section. The establishment of this model provides a feasible method for forecasting the erosion and deposition of reservoirs under different application schemes or different incoming and outgoing water and sediment in the future.