围填海工程对福建东山湾潮汐潮流动力特征的累积影响研究  

The Impacts of Reclamation on Tidal Dynamics in the Dongshan Bay of Fujian

作　　者：宋泽坤 张俊彪 施伟勇 张峰 SONG Zekun;ZHANG Junbiao;SHI Weiyong;ZHANG Feng(Second Institute of Oceanography,Ministry of Natural Resources,Hangzhou 310012,China;Hangzhou SO Ocean Engineering Survey Design and Research Institute CO.,Ltd.,Hangzhou 310012,China;Ocean College,Zhejiang University,Zhoushan 316012,China)

机构地区：[1]自然资源部第二海洋研究所,浙江杭州310012 [2]杭州国海海洋工程勘测设计研究院有限公司,浙江杭州310012 [3]浙江大学海洋学院,浙江舟山316012

出　　处：《海洋技术学报》2023年第6期59-69,共11页Journal of Ocean Technology

基　　金：浙江省自然科学基金青年基金项目(LQ20D060003)。

摘　　要：近年来,福建东山湾内由于围海造陆等区域人类活动,使得湾内潮动力特征发生较为显著的变化。本文基于FVCOM(Finite Volume Community Ocean Model)海洋数值模式,构建了东山湾海域潮动力数学模型,并基于该模型分析了围海工程对海域潮动力的影响特征。研究结果表明:东山湾围海工程对整个海湾的急流时刻的影响主要集中在工程附近约5 km范围内,围海工程上下游附近区域流速显著降低,最大降低值约0.4 m/s,工程靠近海湾一侧区域流速增强,最大增加值约0.35 m/s。其次,东山湾围海工程造成湾内M2分潮振幅整体呈下降趋势,古雷围填海南侧附近下降最大为0.12 m。海域内潮汐不对称γ值显示,海湾内涨潮优势强于落潮,γ值从湾口向湾顶增大明显,湾口的γ值接近于0,湾顶附近海域可达0.54,表现出从湾口向湾顶潮汐的涨潮优势逐渐加强的特征。围海造陆工程造成附近北部区域涨潮优势增强,南部区域落潮优势增强。In recent years,the characteristics of tidal dynamics in the Dongshan Bay of Fujian Province have changed significantly due to human activities,such as land reclamation.In this study,based on the FVCOM numerical model,the tidal dynamic model of Dongshan Bay was examined by utilizing the FVCOM model,and the response of tidal dynamics on reclamation were analyzed based on simulation results.The results show that the time of peak currents were altered in areas adjacent to the reclamation projects(approximately 5 km).The magnitude of tidal current in the upper and lower reaches near the reclamation engineering were reduced significantly,with a maximum value of about 0.4m/s.In the mea time,the current speed increased by 0.35 m/s in area close to the main bay.As a result of the Dongshan Bay reclamation project,the amplitude of M2 decreased over the entire bay,with a maximum decrease of 0.12 m in the south of Gulei reclamation project.The tidal asymmetry,denoted by γ value,exhibited that the tidal current in the Dongshan Bay is flood-dominated.This trend was more apparent in the bay head.As a result of the land reclamation project,the extent of flood-dominated was enhanced in the northern part bay,while the southern part became an ebb-dominated one.

关 键 词：福建东山湾 围海造陆 数值模拟 潮波振幅 潮汐不对称性 

分 类 号：TV143[水利工程—水力学及河流动力学]