珠海香洲港海域水体交换能力研究

Study of water exchange ability in Xiangzhou Port sea area, Zhuhai

文章利用开源代码Delft3D数值模式建立了珠海香洲港海域的二维潮流数学模型,在对模型进行验证基础上,模拟了香洲港海域水体交换能力。结果表明,香洲港海域从初始浓度下将为1%需要10d时间,下降为1‰需要16 d时间。受珠海歌剧院、野狸岛和防波堤的阻隔,香洲港海域水流动力较小,使得港区内水体交换能力较弱。香洲港海域无机氮含量超第四类海水水质标准,应减少陆源排放,加强环境保护。

Open code of Delft3D was used to set up a two dimensional hydrodynamic model for Xiangzhou Port sea area in this paper, and this paper focused on simulating the water exchange ability for Xiangzhou Port sea area. The water exchange ability was simulated in Xiangzhou Port sea area after the verification of numerical model. The result shows that the initial concentration reduced to 1% needs 10 days, and reduced to 1%o needs 16 days in Xiang- zhou Port sea area. The water exchange ability is relatively weak, because the flow velocity is a little small due to the effect of Zhuhai opera, Yeli island and the jetty. The concentration of inorganic nitrogen is over the fourth class water quality standards in Xiangzhou Port sea area, and the land emissions should be reduced to strengthen environ- mental protection.