提出了洪水演进计算中“干湿”边界的处理方法，较好地解决了动边界模拟问题。
A good method of dealing with wet and dry boundary in calculation is given in the article, so the movable boundary simulation problem is solved successfully.
根据该系统的特点，将模型分解为三峡库区和坝址至湖口两大子系统，采用水文学方法进行洪水演进计算。
The system is decoupled into two subsystems, namely the upper dam site subsystem and the dam site Hukou subsystem, according to its nature. The flood routing is carried out with hydrology methods.
计算结果均表明，本文的一维水动力学模型能较好地模拟漫滩河道的过流特征，并改善了漫滩河道洪水演进的模拟与预测能力。
Calculation results show that this model can simulate the characteristics of water flow in a floodplain river and can improve the capacity of flood routing simulating and predicting.
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