华东师范大学学报(自然科学版) ›› 2013, Vol. 2013 ›› Issue (4): 55-71.

• 上海国际航运中心 长江口横沙浅滩挖入式港池规划方案研究 专刊 • 上一篇    下一篇

长江口横沙浅滩挖入式港池与入海航道区域海床稳定性分析

虞志英1， 张志林2， 金 鏐3， 徐海根1， 李身铎1   

  1. 1. 华东师范大学 河口海岸学国家重点实验室， 上海 200062；
    2. 长江水利委员会长江口水文水资源勘测局， 上海 200213；
    3. 交通运输部长江口航道管理局，  上海 200003
  • 收稿日期:2013-04-01 修回日期:2013-07-01 出版日期:2013-07-25 发布日期:2013-07-11

Morphological stability analysis of the planned excavated-in harbor and its channel in the Hengsha Shoal of the Yangtze Estuary

YU Zhi-ying1, ZHANG Zhi-lin2, JIN Liu3, XU Hai-gen1, LI Sheng-duo1   

  1. 1.State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China;
    2. Water Resources Survey Bureau of the Yangtze Estuary, The Yangtze River Water Conservancy Committee, Shanghai 200213, China; 
    3. Administration Bureau of Navigation Channels in Yangtze Estuary, Ministry of Transportation, Shanghai 200003, China
  • Received:2013-04-01 Revised:2013-07-01 Online:2013-07-25 Published:2013-07-11

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摘要： 提议中的横沙浅滩挖入式港池和入海航道区域位于长江口北港和北槽之间的横沙浅滩以及长江口外的水下三角洲海域.长江河口长期以来承受数亿万吨计流域来沙在河口区的堆积，发育了巨大的陆上和水下三角洲，横沙浅滩则是与崇明东滩、九段沙同为长江河口拦门沙地区的三大浅滩之一，长期以来位置和海床均十分稳定，是建设挖入式港池的理想区域.长江水下三角洲形成历史悠久，地形平坦，以三角洲沉积为主.随着近年来长江来沙量的逐渐减少，使长年来地形变幅甚小，对深水航道建设提供了有利的稳定环境.本文主要从海床稳定性的角度，对海床演变环境及演变趋势作出分析研究，为在长江口建设深水港提供参考.

关键词: 挖入式港池, 横沙浅滩, 海床稳定性

Abstract: The proposed excavated-in harbor and shipping channel are located in the adjacent region of Hengsha Shoal in the outer Changjiang River mouth. Accumulation of huge amount of sediment from the upstream Changjiang River occurs in the river mouth, resulted in the large delta area on both land and submarine. Hengsha Shoal is recognized as one of the  three largest shallow shoals, with Chongming East Shoal and Jiuduansha Shoal in the sandbar region of Changjiang River mouth. It shows stable location and bathymetry pattern in the long-term history, which indicates it's an excellent location for a new harbor. During its long history of the submarine delta, the bathymetry is mainly flat and under the deposition effect of delta. With the recent deceasing of the sediment load from the Changjiang River, there is small evolution of the bathymetry. This is favorable for construction of the shipping channel into excavated-in harbor. This paper mainly focuses on the morphological stability of the bathymetry and its evolution trend, to provide some basic support for the new deep harbor.

Key words: excavated-in harbor, Hengsha Shoal, morphological stability

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