环抱式防波堤口门最大航道横流模拟分析

Numerical Simulation and Research on Cross Flow in Approach Channel at Entrance of Breakwater-encircled Harbor

本文以连云港徐圩港区为例,利用二维潮流数学模型,分析总结环抱式防波堤口门航道最大横流的影响因素及相关规律,避免以往横流计算的随机性及单一性问题。研究表明:在立波特性显著的海域,环抱式防波堤口门的航道最大横流与潮差之间存在着的良好的对应关系,拟合可得最大横流的经验计算公式;结合预报潮差的累积频率分析,可求得不同累积频率的最大横流,进而指导航道设计及船舶调度管理。

Take Xuwei harbor in Lianyungang for an to analyze the influencing factors of the maximum instance, the 2D current numerical modal is used cross-flow of encircle breakwater＇s channel at entrance and the correlative discipline between them to avoid the randomness and singularity of the prior calculation of cross-flow. The results showed that： in the sea area with a pronounced characteristics of standing waves, the maximum cross-flow of channel at entrance was dominated by flood tide, and its empirical formula could be acheived ; With the cumulative frequency analysis of flood tidal ranges based on tide tables, the cross-flow of channel at entrance with different cumulative frequency could be simulated by the fitting relationship, which could be used to guide design and management of ship scheduling.