长江口白茆沙河段航道整治方案初步研究

通过河势分析,总结了长江口白茆沙河段近期河势演变特点,指出了不利于航道发展的因素。为解决存在的问题,提出了整治方案的思路和目标,建议采用护滩工程,固守白茆沙沙头,稳定白茆沙沙体,适当增强南北水道动力条件。利用上海河口海岸科学研究中心自主研发的二维潮流数学模型,针对提出的整治方案进行了动力模拟计算,从动力场的角度分析了工程方案的效果。计算结果表明,白茆沙护滩堤能够有效地护住沙体,保护沙体的完整性,且使得两水道的落潮动力有所增强,可以达到工程的治理效果。

Research on channel regulation scheme of Baimaosha reach in the Yangtze Estuary

Through analysis of river regime,the characteristics of river regime evolution of Baimaosha reach in the Yangtze Estuary were summarized.Several factors,which were adverse to the development of channel,were pointed out,and the solution method was proposed.Beach protection project was suggested to protect the sand body and increase the hydrodynamic forces of south and north channels of Baimaosha.The 2-D tidal current numerical simulation model developed by Estuarine Coastal Science Research Center of Shanghai was used to simulate the regulation effect.The results of calculation show that the beach protection dike of Baimaosha can protect the sand body effectively and increase the hydrodynamic forces of both channels during ebb tide.