热带海洋学报 ›› 2011, Vol. 30 ›› Issue (4): 24-30.doi: 10.11978/j.issn.1009-5470.2011.04.024

• 海洋水文学 • 上一篇    下一篇

舟山凉潭岛填海工程对水动力及海床演变影响的模拟预测分析

吴仁豪 1,  童元正 1,  张旭锋 1,  赵晟 1,  孙健 1,  娄建富 1,  王海平 2   

  1. 1.  浙江海洋学院  海洋科学学院,   浙江  舟山 316004; 2.  舟山市海洋勘察设计院,  浙江  舟山 316004
  • 收稿日期:2009-10-14 修回日期:2010-01-04 出版日期:2011-09-05 发布日期:2011-09-08
  • 通讯作者: 吴仁豪(1980—), 男, 江西省南昌市人, 硕士, 主要从事河口水环境, 潮汐, 潮流数值模拟研究。E-mail: zjhk0701@163.com
  • 作者简介:吴仁豪(1980—), 男, 江西省南昌市人, 硕士, 主要从事河口水环境, 潮汐, 潮流数值模拟研究。E-mail: zjhk0701@163.com
  • 基金资助:

    浙江省科技厅面上项目(2009C33083)

Prediction of the effect of reclamation near Liangtan Island in Zhoushan water area

WU Ren-hao 1 , TONG Yuan-zheng1 , ZHANG Xu-feng 1 , ZHAO Sheng1 , SUN Jian1 ,  LOU Jian2   

  1. 1. Marine Science College of Zhejiang Ocean University, Zhoushan 316004, China; 
    2. Zhoushan Survey Designing Institute, Zhoushan 316004, China
  • Received:2009-10-14 Revised:2010-01-04 Online:2011-09-05 Published:2011-09-08

摘要:

用一个三维(ECOMSED)模式对舟山凉潭岛填海工程前后的潮流场变化进行模拟,  做出预测。潮流场模拟结
果与实测基本吻合。经分析可知,  工程对潮流的影响主要在围堤的东南角小范围内:  工程后流速明显减小,  造成
淤积现象,  但淤积程度不大, 1 年后的淤积为 13cm 左右, 5 年后的淤积为 0.8—1.2m 左右。工程对较深水层的潮流
运动影响很小。通过对施工期间产生的悬浮物在涨落潮时的分布模拟可知,  涨潮时,  悬浮物从工程区域的一个悬
浮物源不断排出,  主要对工程附近及其上游地区造成一定的影响;  落潮时,  悬浮物主要影响工程外围及其下游地
区,  整个落潮期间悬浮物能影响的范围比涨潮期间要大。总体上工程对该附近海域的潮流场及冲淤影响很小。

关键词: 数值模拟,  , 潮流,  , 悬浮泥沙,  , 冲淤

Abstract:

A three-dimensional ocean model (ECOMSED) is used to simulate and predict the effect of reclamation activity on
the local tidal current near Liangtan Island in Zhoushan. The computed results of tidal current basically agree with the obser-
vations. It is shown that the local tidal current is affected by the reclamation mainly in a small area located at the southeast
corner of the reclaimed area where a pronounced reduction appears in tidal current velocity and causes a slight sedimentation.
The extent of the sedimentation is 13 cm and 0.8-1.2 m one year and five years after the reclamation, respectively. The recla-
mation has a slight influence on the deeper current. The distribution of the suspended substance caused by the reclamation
shows that the suspended substance coming from an unceasing discharging source has a main effect on the adjacent and up-
stream areas during the flood tide period, and on the periphery and downstream areas during the ebb tide period. Furthermore,
the affected area is larger during the ebb tide period than during the flood tide period. As a whole, the reclamation project has a
slight effect on the local tidal current as well as erosion and siltation.

Key words: numerical simulation, tidal current, sediment, erosion and siltation