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热带海洋学报 ›› 2013, Vol. 32 ›› Issue (1): 81-86.doi: 10.11978/j.issn.1009-5470.2013.01.012cstr: 32234.14.j.issn.1009-5470.2013.01.012

• 海洋工程 • 上一篇    下一篇

铁山湾建港前后水体交换能力的数值模拟

蒋昌波1, 2, 李媛1, 2, 官志鑫1, 3, 邓斌1, 2   

  1. 1. 长沙理工大学水利工程学院，湖南 长沙 410004; 2. 水沙科学与水灾害防治湖南省重点实验室，湖南 长沙 410004; 3. 湖南省交通规划勘察设计院，湖南 长沙 410008
  • 收稿日期:2013-04-20 修回日期:2013-04-20 出版日期:2013-04-19 发布日期:2013-04-20
  • 通讯作者: 李媛。E-mail：liyuan24h@163.com
  • 作者简介:蒋昌波（1970—），男，陕西省石泉县人，教授，主要从事河流、海岸动力过程及其模拟技术的研究。E-mail：jcb36@163.com
  • 基金资助:
    国家自然科学基金重点项目(51239001)

Numerical simulation of water exchange capability before and after port construction in Tieshan Bay

JIANG Chang-bo1, 2, LI Yuan1, 2, GUAN Zhi-xin1, 3, DENG Bin1, 2   

  1. 1. School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410004, China; 2. Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province, Changsha 410004, China; 3. Hunan Provincial Communications Planning, Survey & Design Institute, Changsha 410008, China
  • Received:2013-04-20 Revised:2013-04-20 Online:2013-04-19 Published:2013-04-20

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被引次数

26 | 7

摘要： 铁山湾是北部湾东北部较大的海湾，水深条件好，可用岸线长。为研究铁山湾建港工程前后湾内的水体交换能力，文章建立了平面二维的水动力模型以及平面二维对流—扩散模型，率定后水动力学模型模拟结果与实测结果吻合良好。运用二维对流—扩散模型计算了湾内不同区域的水体半交换时间，模拟结果表明：铁山湾的水体交换能力较强，工程前水体半交换时间为129天，海域的水体交换能力主要受铁山湾潮汐作用的影响。铁山湾潮汐作用较强，潮差较大，且铁山湾口门开阔，这都为铁山湾的水体交换提供了良好的条件。工程后铁山湾水体半交换时间为142天，工程前后铁山湾水体半交换时间仅相差13天，说明工程方案对铁山湾水体交换能力无重大影响。

关键词: 铁山湾, 水体交换, 建港工程方案, 半交换周期, 潮汐

Abstract: Tieshan Bay is located in the northeast Beibu Bay. It has clean water and long shoreline. In this study, a two-dimensional (2-D) hydrodynamic model and a 2-D advection-diffusion model were set up to simulate the water exchange capability before and after the port construction in Tieshan Bay. The 2-D hydrodynamic model was verified by measured data, and the 2-D advection-diffusion model was used to calculate the half-life time of different area in Tieshan Bay. The simulation results show that the water exchange capability of Tieshan Bay is strong; and that before the port construction the half-life time of water exchange is 129 days and the water exchange capability is mainly affected by tidal action. The strong tidal action, large tidal range and wide harbor entrance all provide good conditions for the water exchange in Tieshan Bay. After reclamation the half-life time of water exchange would be 142 days, just 13 days more than before, so the port construction should have little effect on the water exchange capability of Tieshan Bay.

Key words: Tieshan Bay, water exchange, port construction, half-life time, tide

中图分类号: 

  • P731.2