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本文利用控制体积法对沿水深平均的二维水流及泥沙微分方程进行了离散，建立了二维潮流泥沙数学模型，并利用连云港附近的潮流及含沙量资料对模型进行了验证计算．验证结果表明，无论是水位、流速、流向，还是含沙量都与实测资料符合良好．由此可以看出，本模型不仅能应用于潮流泥沙计算，而且可以推广到各种平面不恒定流的泥沙冲淤计算中．
In this paper, two-dimensional flow and sediment differential equations along the water depth are discretized using the control volume method. The two-dimensional tidal current and sediment mathematical model is established and the model is validated by using the tidal current and sediment concentration data in the vicinity of Lianyungang. The verification results show that both the water level, the flow rate, the flow direction and the sediment concentration are in good agreement with the measured data. It can be seen that this model not only can be applied to the calculation of tidal current and sediment, but also can be extended to the calculation of sediment erosion and erosion of all kinds of plane non-constant flow.