| 南通水道航道回淤原因分析 |
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| 引用本文： | 贾雨少,谢 婕. 南通水道航道回淤原因分析[J]. 水运工程, 2018, 0(12): 147-154 |
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| 作者姓名： | 贾雨少 谢 婕 |
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| 作者单位： | 中交上海航道勘察设计研究院有限公司，上海200120,中交上海航道勘察设计研究院有限公司，上海200120 |
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| 摘 要： | 针对南通水道近期航道回淤急剧增加的现象,采用实测资料与数学模型相结合的手段分析航道回淤的内在与外在原因。研究结果表明:南通水道河道宽度由2 km放宽至6 km,动力分散减弱,泥沙易落淤形成水下暗沙,水下暗沙在弯道环流的作用下,横跨航槽输移;近期在南通水道附近实施的沪通长江大桥与通州沙西水道河道整治工程是航道回淤量急剧增加的直接原因;近年来福姜沙河段持续冲刷,为南通水道航道回淤提供了部分泥沙来源。
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| 关 键 词： | 南通水道；航道回淤；沪通长江大桥；通州沙西水道 |
Cause analysis of siltationin navigation channel in Nantong waterway |
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| JIA Yu-shao and XIE Jie. Cause analysis of siltationin navigation channel in Nantong waterway[J]. Port & Waterway Engineering, 2018, 0(12): 147-154 |
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| Authors: | JIA Yu-shao and XIE Jie |
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| Affiliation: | Shanghai Waterway Engineering Design and Consulting Co.,Ltd.,Shanghai 200120,China and Shanghai Waterway Engineering Design and Consulting Co.,Ltd.,Shanghai 200120,China |
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| Abstract: | In view of the rapid increase of siltation in navigation channel in Nantong waterway,we analyze the intrinsic and external factors of siltation by the combination of measured data and mathematical model.The results show that,the dynamic is dispersed and weakened as the width of Nantong waterway widening from 2 km to 6 km,then sediment deposite and shoal underwater is formed,and the shoal underwater is transported crossing the navigation channel under the influence of circulation flow.The Hutong Yangtze River Bridge and the Tongzhou shoal west channel regulation are the direct causes of the rapid increase of siltation in navigation channel.The abundant sediment scour from Fujiang shoal waterway provides part source of siltation in navigation channel. |
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