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长江口风暴潮流场计算研究(马进荣)

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【作者】马进荣 【导师】陈志昌
#Tx"v)Dmi)bN"`0【作者基本信息】南京水利科学研究院,海岸工程,2001年,硕士水利论文b6l/E)W]Y p9L

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【中文摘要】 外海风暴潮传播到长江口时,长江口区流场由径流、潮流、风暴潮三大动力因素决定。为模拟三者相互作用下的长江口区流场,先后建立了一维水流数学模型和二维潮流数学模型,并在徐六泾采用显式搭接法,建立起一、二维联解潮流数学模型。 为模拟长江口深水航道治理工程的导堤和丁坝,数学模型中采用了先进的线边界技术,导堤、丁坝对流场的影响在计算中得到了证实。 应用一、二维联解模型进行了桑美风暴潮及其同期天文潮的验证计算,得到了桑美风暴潮及其同期天文潮的外海控制边界。进行了8组计算,计算条件由长江口深水航道治理工程不同进展情况、不同大通流量过程及外海控制边界进行组合。这8组计算涵盖了“二碰头”和“三碰头”的特殊情况。 分析各组计算成果,揭示了长江口径流、潮流、风暴潮及治理工程间的相互影响的某些特性,如:径流增加或风暴潮发生都有利于北槽分流比的增加;深水航道治理工程对长江口区风暴潮增水没有明显影响;风暴增水过程中,长江口各断面净泄量随增水不同时期有规律地变化。水利论文ze"l BeP1uOyk

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【英文摘要】 Storm surge calamity is one of the tremendous disasters in nature. In estuary area, storm surges are always mutually acted with floods and tides. To simulate the tide current interacted by storm surge in Yangtze estuary area, three mathematic models have been established. The first one is 1-D model established to calculate the runoff from DaTong section. The second one is 2- D model used to simulate tide current or storm surge current. The third one is the model combined with 1-D and 2-0. The line boundary technique is used to deal with the engineering boundary of Yangtze Estuary Deepwater Channel Regulation Project. The effect of two jetties and groins are properly simulated in the current calculation. The model combined with 1-0 and 2-D has been used to simulate 8 different tide current affected by different runoff, different project and storm surge. Spring tide, great flood and storm surge were included in these calculations. Some interesting conclusions about tide, runoff, storm su...更多rge and regulation project were obtained.  还原

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l L5s7F]fq0【中文关键词】 风暴潮; 长江口; 模型; 线边界; 长江口深水航道治理工程水利论文Y7G4T/R*lt;nqY4F?
【英文关键词】 storm surge; Yangtze Estuary; line boundary technique; Yangtze Estuary Deepwater Channel Regulation

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TAG: 长江 研究 马进荣 风暴 潮流
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