台风对洋口港深水航道骤淤影响的研究

联合运用SWAN模型和MIKE21模型，建立了波流联合作用下平面二维的泥沙数学模型，模拟台风作用下洋口港深水航道的淤积情况；提出了近底高浓度水体临界高度的计算方法，据此建立了考虑推移质与近底高浓度含沙水体层两层模式输沙、计算粉砂质海岸淤强的经验公式；最后运用上述2种方法分别计算台风作用下洋口港外航道的淤积，分析结果认为台风作用不会对洋口港外航道造成很大淤积。

Influence of Typhoon on Sudden Siltation of Yangkou Harbour Deepwater Channel

This paper establishes the plane 2D sediment numerical model utilizing SWAN model and MIKE21 model under the action of wave and current, for simulating siltation in deepwater channel of Yangkou Port under the action of typhoon. It also proposes the computational method for the critical height of high concentration layer near bottom, according to which, the empiric formula for calculating the siltation intensity with consideration of bed load and high silt concentration layer near bottom is built. The calculation results for siltation in the outer waterway by the above two methods proved that typhoon will not arise serious siltation in the outer waterway of Yangkou Port.