赤湾突堤延长工程潮流数学模型研究

使用TK-2D软件建立了基于不规则三角形网格的伶仃洋整体二维潮流数学模型和赤湾附近局部二维潮流数学模型,根据现场实测资料对模型进行了验证。在验证的基础上,对赤湾突堤延长工程实施后造成的流场变化进行了模拟研究。研究结果表明:赤湾突堤延长工程实施后,流场变化仅限于工程附近;9#～13#泊位的涨落潮流速和流向基本不变;延长段堤头东南侧涨落潮流速呈减小趋势,延长段堤头西南侧涨落潮流速呈增加趋势;赤湾内涨落潮潮量不会变化;从对周围潮流场的影响角度考虑,赤湾突堤延长工程是可行的。

Numerical modeling of tidal current in Chiwan sea area after the project of extended jetty

Based on TK-2D software,a whole mathematical model and a local one near Chiwan with irregular triangular grid of tidal current in Lingdingyang sea area were set up.Verification and validation were carried out on the basis of measured data.According to the simulation results,analyses were made on the change of flow field after the project of extended jetty.The study results show that:the change of flow field is around the area of project.The velocity and direction of the flood and ebb tide is almost invariant in 9～13# berth.The velocity and direction of the flood tide and the ebb tide is decreased in the southeast side and increased in the southwest side of the bank-head of the prolonged project.The tidal quantity is invariant.The extended project of jetty is feasible from the point of view of tidal current.