二维潮流数学模型在瓯江北口大桥防洪评价中的应用

Application of 2D Tidal Flow Mathematical Model in Flood Control Evaluation of Oujiang North Estuary Bridge

通过建立基于有限体积法的平面二维潮流数学模型,分析瓯江北口大桥建设前后的瓯江河口水位、流速、流场、纳潮量的变化,进而分析工程建设对瓯江河口防洪、航道和港区的影响。结果表明,平面二维潮流数学模型能够很好地模拟河口地区洪潮水演进过程,为河口地区的涉水工程建设提供技术支撑,具有较高的实用价值。

The 2D tidal flow mathematical model based on the finite volume method is established to analyze the:changes of water level,velocity,flow field and tidal prism in the Oujiang Estuary before and after the construction of Oujiang North Estuary Bridge,and then analyze the impact of the construction on the flood control,channel and port area of the Oujiang Estuary.The results show that the 2D tidal flow mathematical model can well simulate the:flood and tide evolution process in the estuary area,and provide technical support for the construction of water related projects in the estuary area,which has high practical value.