港珠澳大桥建设对水沙环境影响数学模型研究——Ⅰ.模型的建立和验证

Mathematical modeling of the effect of constructing Hongkong-Zhuhai-Macao bridge on hydrodynamic sediment environment:Ⅰ.Development and verification of the model

针对港珠澳大桥工程和其所在海区的特点,基于TK-2D软件建立了不规则三角形网格的伶仃洋内外海域大范围二维潮流泥沙数学模型和大桥工程区附近的小范围局部细化的二维潮流泥沙数学模型,根据现场实测资料对模型进行了充分的验证,分析了工程海区的潮流悬沙特征,为进一步论证港珠澳大桥建设方案对工程海区的影响奠定了基础。

According to the feature of the project and the sea area,by TK-2D software and with irregular triangular grid,an integral mathematical model and a local refined one near project area of tidal current and sediment in Lingdingyang bay are set up.Verification and validation are carried out fully against measured data and numerical simulations of tidal current and suspended sediment field are made.The features of the tidal current field and the suspended sediment field of the Lingdingyang bay area are analyzed and the basis is established to demonstrate the effect of constructing Hongkong-Zhuhai-Mocao bridge on the sea area.