| 长江口12.5m深水航道潮周期内回淤量分布 |
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| 引用本文： | 顾峰峰,万远扬,沈 淇,王 巍,孔令双.长江口12.5m深水航道潮周期内回淤量分布[J].水运工程,2017(7):1-6. |
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| 作者姓名： | 顾峰峰 万远扬 沈 淇 王 巍 孔令双 |
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| 作者单位： | 上海河口海岸科学研究中心，交通部河口海岸重点实验室，上海 201201,上海河口海岸科学研究中心，交通部河口海岸重点实验室，上海 201201,上海河口海岸科学研究中心，交通部河口海岸重点实验室，上海 201201,上海河口海岸科学研究中心，交通部河口海岸重点实验室，上海 201201,上海河口海岸科学研究中心，交通部河口海岸重点实验室，上海 201201 |
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| 基金项目： | 上海市自然科学基金（14ZR1420700）；国家重点研发计划课题（2016YFC0402107）；上海市科学技术委员会基金项目（15DZ1202400） |
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| 摘 要： | 潮周期内航道回淤量是一个随潮动力的变化而动态变化的量。确定深水航道的回淤量的潮周期内分布特征,将有助于合理安排航道的疏浚,减少不必要的疏浚船方。采用适用于长江口深水航道的回淤量计算模型,基于实测航道近底层的水文观测资料,获得了潮周期内的航道回淤量分布特征及其形成机制,得到航道回淤量主要发生在中小潮期间,而大潮期间动力较强冲刷明显、近底层泥沙浓度高,但形成的回淤量较小的结论。这一结论通过枯季近底层实测的水、沙及地形冲淤变化过程资料得到了验证。
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| 关 键 词： | 长江口 潮周期 航道回淤 12.5 m深水航道 |
Distribution of the back-siltation in 12.5 m deep navigation channel during a tidal cycle in the Yangtze estuary |
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| GU Feng-feng,WAN Yuan-yang,SHEN Qi,WANG Wei and KONG Ling-shuang.Distribution of the back-siltation in 12.5 m deep navigation channel during a tidal cycle in the Yangtze estuary[J].Port & Waterway Engineering,2017(7):1-6. |
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| Authors: | GU Feng-feng WAN Yuan-yang SHEN Qi WANG Wei and KONG Ling-shuang |
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| Institution: | Key Laboratory of Ministry of Communications,Shanghai Estuarine & Coastal Science Research Center,Shanghai 201201,China,Key Laboratory of Ministry of Communications,Shanghai Estuarine & Coastal Science Research Center,Shanghai 201201,China,Key Laboratory of Ministry of Communications,Shanghai Estuarine & Coastal Science Research Center,Shanghai 201201,China,Key Laboratory of Ministry of Communications,Shanghai Estuarine & Coastal Science Research Center,Shanghai 201201,China and Key Laboratory of Ministry of Communications,Shanghai Estuarine & Coastal Science Research Center,Shanghai 201201,China |
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| Abstract: | During a tidal cycle,the back-siltation is changing with the tidal power.So it is necessary to study the distribution of back-siltation in the deep channel.The result is helpful for the arrangement of channel maintenance to reduce unnecessary dredging.Based on the hydrological data observed near the bottom of the deep water channel,a model is used in this paper and the distribution characteristics and mechanism of back-siltation is obtained.Although the sediment concentration near the bottom is high and the bed is eroded by the strong power during the spring tides obviously,the formation of back-siltation is smaller.And the back-siltation mainly occurs during neap tides.This conclusion has been verified by the data observed during the dry season. |
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| Keywords: | the Yangtze estuary tidal cycle back-siltation 12 5 m deep navigation channel |
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