长江口洋山港建设对附近海域潮动力影响研究  

Study on influence of Yangshan Port construction in Yangtze River Estuary on tidal current in nearby area

作　　者：张志林 朱巧云 李身铎[2] 

机构地区：[1]长江水利委员会长江口水文水资源勘测局,上海200136 [2]华东师范大学河口海岸科学研究院,上海200062

出　　处：《人民长江》2013年第5期18-22,共5页Yangtze River

摘　　要：长江口洋山深水港工程建成后,洋山海域北侧边界发生了重大变动,引起水动力的变化,影响港区冲淤调整。从大量现场观测资料分析可知,一、二期工程建成后,落、涨潮流速在一期码头前沿剧减;三期工程北岸形成5.7km的平直岸线后,流速有所增加。对小洋山长时间序列潮位的调和分析表明,工程建成后主要分潮的振幅有所增加,近北岸水流局部滞流;海域水流在涨、落憩期间出现潮汐环流;海域东部出现壅水以及涨潮流主轴北偏和北岸水域涨潮流相对增强等现象。潮波运动的非线性效应和柯氏力效应增强的综合影响弱化了该海域的基本流场。After the completion of Yanshan Port in Yangtze River Estuary, the north boundary of Yangshan area changes obvi- ously resulting in the variation of hydrodynamics and scour and silting adjustment in the area. On the basis of analysis of massive field measuring data, the ebb and flood current decrease in front of Stage I wharf after the 1 st and 2nd phase of the construction, and the current velocity increases after Stage III wharf forming a straight shoreline of 5.7 km at the north shore. According to the harmonic analysis of long - term tidal level, the amplitude of main tidal constituents increases. The stagnation of current happens near the north shore. The tidal current occurs in the sea area during the transition of ebb tide or flood tide; backwater appears in the east area of the sea; during the flood tidal current, the mainstream of flood tidal current increases along the north shore. It is shown that the basic current field of Yangshan area is weakened by the enhancement of nonlinear effect and Coriolis Effect of the tidal motion under the new boundary.

关 键 词：堵汊成陆 潮动力 非线性效应 浅水潮波 洋山深水港 

分 类 号：TV148[水利工程—水力学及河流动力学]