地理学报 ›› 2011, Vol. 66 ›› Issue (3): 348-355.doi: 10.11821/xb201103007

• 海岸地貌 • 上一篇    下一篇

渤海湾曹妃甸深槽形成机制及稳定性分析

季荣耀1,2, 陆永军1,2, 左利钦1,2   

  1. 1. 南京水利科学研究院, 南京210029;
    2. 水文水资源及水利工程科学国家重点实验室, 南京210029
  • 收稿日期:2010-11-05 修回日期:2011-02-11 出版日期:2011-03-20 发布日期:2011-05-15
  • 通讯作者: 陆永军(1964-), 男, 教授级高级工程师, 博士, 主要从事河流海岸泥沙研究。E-mail: yjlu@nhri.cn E-mail:yjlu@nhri.cn
  • 作者简介:季荣耀(1978-), 男, 工程师, 博士, 主要从事河流海岸动力学与环境演变研究。E-mail: ryji@nhri.cn
  • 基金资助:

    国家自然科学基金项目(50879047; 50779037)

Formation Mechanism and Stability of Caofeidian Channel in the Bohai Bay

JI Rongyao1,2, LU Yongjun1,2, ZUO Liqin1,2   

  1. 1. Nanjing Hydraulic Research Institute, Nanjing 210029, China;
    2. State's Key Laboratory of Hydrology Water Resources and Hydraulic Engineering Science, Nanjing 210029, China
  • Received:2010-11-05 Revised:2011-02-11 Online:2011-03-20 Published:2011-05-15
  • Supported by:

    National Natural Science Foundation of China, No.50879047; No.50779037

摘要: 渤海湾湾口曹妃甸岬角地貌特征明显,紧贴甸头前沿发育有渤海湾最深的巨型潮汐深槽。该深槽的发育有着一定的地质构造基础,曹妃甸沙岛形成的岬角地貌构成了深槽的边界条件,由此引起的局部潮流增大成为深槽形成与维持的主要动力条件。曹妃甸深槽长期以来边界条件与动力条件已基本适应,周边滩槽形势基本稳定,海床以轻微冲刷态势为主。近年来随着曹妃甸港区开发的不断深入,各种工程建设对深槽冲淤演变的影响日益增强,但由于并没有改变曹妃甸深槽的边界条件及动力形成机制,深槽稳定性良好。

关键词: 潮汐深槽, 形成机制, 演变, 稳定性, 曹妃甸

Abstract: Caofeidian barrier island extends southward into the Bohai Bay in the form of headland, just in front of which there is a deep channel with the largest water depth of 41 m. The formation of the deep channel was based on the old river valley extending from the Haihe River Estuary to the Bohai Sea Strait. The headland topography of Caofeidian barrier island forms the boundary condition of the deep channel, and the obvious velocity increase by headland effect becomes the dynamic condition of the deep channel development. The boundary condition and dynamic condition for the deep channel are almost adaptive for a long time, and the seabed is basically in a state of stability, and the the deep channel is in a state of slight erosion with short sediment supply. In recent years, the development of the Caofeidian harbor area has a significant effect on the evolution of the deep channel. The engineering practice shows that during 2004-2009, the seabed is basically in a state of erosion-deposition equilibrium with slight ersoion, and the deep channel is stable, which proves that the development of the Caofeidian harbor area did not change the boundary and dynamic conditions of the deep channel.

Key words: tidal channel, formation mechanism, evolution, stability, Caofeidian