沿水深对三维雷诺方程进行莱布尼兹积分得到二维非恒定流运动方程，据此建立滹沱河洪水演进数学模型。根据研究区边界条件及洪水标准，采用合适的水动力学方法，对河道行洪和实时洪水位进行了计算，并考虑了模型区内微地形的影响。在动边界处理时，采用数组跟踪的方法，提高了计算效率。利用滹沱河“96·8”洪水资料对模型进行了验证，模拟水位成果与实测资料吻合较好。在此基础上，模拟了不同标准行洪条件下，滹沱河行洪区内高尔夫球场建设前后的洪水形势，较好地反映了建设项目对河道行洪的影响。模拟结果表明该模型设计合理，具有一定可靠性和实用性。

The Leibniz integral was performed on the three-dimensional Reynolds equation along the water depth to obtain the two-dimensional unsteady flow equation, which was used to develop the flood routing mathematical model in the Hutuo River. Based on the boundary conditions, flood standards, and the effects of tiny terrain in the study area, suitable water dynamics method was used to calculate the flood discharge and real-time flood level. The method of array tracking was applied in the process of moving boundary to improve the computational efficiency. The “96?8” flood data of the Hutuo River were used to verify the model, and the results showed good agreement between the simulated and measured data. On this basis, the flood situations before and after the golf course construction were simulated in the flood diversion area of the Hutuo River under the flood discharge conditions with different standards, which can characterize the impacts of the construction project on the flood discharge. The simulation results indicated that the model design is reasonable and the model has a certain reliability and practicability.