集约用海对莱州湾水动力环境影响的数值模拟研究

发布时间：2018-04-22 09:26

本文选题：莱州湾 + 三维斜压模型　；参考：《海洋工程》2016年01期

【摘要】：在考虑水体斜压的基础上利用MIKE3三维数值模型的HD和Ecolab模块,对莱州湾的水动力环境进行了数值模拟,并将验证良好的该模型用于分析预测集约用海工程的实施对莱州湾水动力环境造成的影响。研究结果表明:工程并不会大范围改变莱州湾海域的水动力特征,影响主要集中在工程区附近,距工程新岸线约20 km处,流速变化率在15%左右甚至更小;工程造成海湾纳潮量在大小潮期分别减小0.29%和1.07%,海湾与外海水交换能力被削弱,可能会导致湾内水体污染加剧;工程实施后海湾PO_4-P平均浓度升高,DIN平均浓度降低,N/P比下降,海域磷限制作用被削弱。
[Abstract]:The hydrodynamic environment of Laizhou Bay was numerically simulated by using the HD and Ecolab modules of MIKE3 3D numerical model on the basis of considering the baroclinic of water body. The well-verified model is used to analyze and predict the effect of intensive sea engineering on hydrodynamic environment in Laizhou Bay. The results show that the engineering will not change the hydrodynamic characteristics of Laizhou Bay in a large scale, the influence is mainly near the engineering area, about 20 km from the new shore line of the project, and the velocity change rate is about 15% or even less; As a result of the project, the amount of tidal absorption in the bay decreases by 0.29% and 1.07% respectively in the large and small tidal periods, and the exchange capacity between the bay and the outer sea water is weakened, which may lead to the increase of the water pollution in the bay, and the increase of the average concentration of PO_4-P in the bay and the decrease of the average concentration of din in the deep bay, and the decrease of the N / P ratio. The limitation of phosphorus in the sea area has been weakened.
【作者单位】：大连理工大学海岸和近海工程国家重点实验室;中交第四航务工程勘察设计院有限公司;
【基金】：国家自然科学基金项目(51579030) 国家重点基础研究发展计划项目(2013CB430403)
【分类号】：P731.2;X55

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