Hydrodynamic influence of proposed excavated-in harbor in the Hengsha Shoal of the Yangtze Estuary Ⅱ: Influence on the current field
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摘要: 横沙浅滩挖入式港池规划方案工程空间尺度巨大，必然对邻近的北港，特别是北槽深水航道产生一定程度的影响.本文基于经过检验的无结构三角高分辨率长江口FVCOM模型，对规划方案的不同平面布置进行模拟分析对比.结果表明，从流场整体态势、典型站位的大小潮动力特征可以看出,横沙浅滩挖入式港池南线、北线方案对北港和北槽的水动力特征并没有造成非常显著的变化，总体上呈现较为微弱的影响，而南线方案对北槽外航道影响较北线方案更为明显.两方案都造成北港往复流特征更趋明显.且南线方案横流更为显著.综合分析，北线方案叫南线方案对周边流场影响较小.Abstract: The planed excavated-in harbor in the Hengsha Shoal, located in the river mouth of Changjiang Estuary, has large spatial coverage, which certainly would have significant influence on the hydrodynamics around the local and adjacent regions. This paper focuses on the hydrodynamic influences of the new harbor based on a validated high-resolution unstructured-grid FVCOM model. The modeling results of current field and characteristics at some typical locations show that neither the South nor the North Plans would create significant influence on the hydrodynamics in the North Channel and North Passage, while the South Plan shows more obvious impact on the outer shipping channel of the Deep Waterway Project. Both plans indicate the currents in the North Channel show increasing dominant of alternating current, while the South Plan would produce more significant cross-channel current at the outer region of excavated-in harbor.
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Key words:
- Hengsha Shoal /
- excavated-in harbor /
- current simulation /
- FVCOM
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[1] ［1］ 中交第三航务工程勘察设计院有限公司，华东师范大学河口海岸学国家重点实验室.上海国际航运中心横沙浅滩挖入式港池规划方案研究报告［R］.上海：华东师范大学,2012.［2］ 葛建忠，郭文云，丁平兴. 长江口横沙浅滩挖入式港池对流场的影响分析Ⅰ： 数值模型和验证［J］. 华东师范大学学报：自然科学版，2013（4）：79-90.［3］ 葛建忠. 东中国海和长江口FVCOM数值模型系统及应用［D］. 上海：华东师范大学，2011.［4］ 海洋图集编委会.渤海、黄海、东海海洋图集［M］.北京：海洋出版社，1993. -
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