| 长江口深水航道(一、二期工程)回淤变化 |
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| 引用本文： | 刘杰,徐志杨,赵德招,程海峰.长江口深水航道(一、二期工程)回淤变化[J].泥沙研究,2009(2). |
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| 作者姓名： | 刘杰 徐志杨 赵德招 程海峰 |
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| 作者单位： | 上海河口海岸科学研究中心,上海,201201 |
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| 摘 要： | 利用长江口深水航道回淤资料,研究了北槽航道回淤的时空变化特征及其对流域来水来沙、河槽地形的关系.长江口深水航道治理一、二期工程实施后,北槽航道年淤积强度明显下降,工程治理效果得以显现.从空间上看,一、二期工程航道回淤的峰值位置和重心位置经历了下移和上提的过程.从时间上看,一、二期工程后北槽航道回淤年内呈现洪季多淤、枯季少淤;洪季淤积位置下移,枯季淤积位置上提的变化特点,季节性上、下移动约7～11km.深水航道淤积的泥沙来源有多种,仅流域悬沙输沙量减小并不能明显降低深水航道的回淤量.
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| 关 键 词： | 长江口 北槽 深水航道 回淤 |
Change of re-siltation in the Yangtze Estuary deepwater channel during 1~(st) and 2~(nd) stages |
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| LIU Jie,XU Zhi-yang,ZHAO De-zhao,CHENG Hai-feng.Change of re-siltation in the Yangtze Estuary deepwater channel during 1~(st) and 2~(nd) stages[J].Journal of Sediment Research,2009(2). |
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| Authors: | LIU Jie XU Zhi-yang ZHAO De-zhao CHENG Hai-feng |
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| Affiliation: | Shanghai Estuarine and Coastal Science Research Center;Shanghai 201201;China |
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| Abstract: | The re-siltation change and its response to the incoming flow and suspended sediment at Datong station and the local width of 7m,8m isobath were studied by using the data of re-siltation in the Yangtze Estuary deepwater channel.Due to change of boundary conditions,re-siltation intensity of the whole navigation channel had an obvious decrease after implementing the Yangtze Estuary deepwater navigational improvements.The location of the maximum re-siltation intensity moved from the downstream during the 1st s... |
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| Keywords: | the Yangtze Estuary the North passage navigation channel re-siltation |
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