水道港口2025，Vol.46Issue(4)：498-507,10.
日月湾人工岛工程对岸滩演变影响研究
Research on impact of Riyue Bay artificial islands on backshore beach evolution
摘要
Abstract
The evolution of backshore beach is significantly influenced by offshore artificial islands.In this paper,the effects of artificial island engineering on hydrodynamics,coastal sediment transport,and beach evolution in the sandy beach area behind the island were analyzed with a coupled wave-flow-sediment numerical model.The analysis was conducted based on satellite remote sensing images,the measured underwater topography,and sediment sampling data.Additionally,the influence of artificial island layout on the development and morphology of the shoal behind the island was examined.The results indicate that artificial islands induce beach accretion behind the island and erosion flanking the accretion zone,while causing narrowing and steepening of intertidal sandy beaches in the vertical profile.Longshore sediment transport is predominantly driven by wave dynamics,with sediment fluxes and beach morphology changes concentrated in the intertidal zone,whereas tidal variations and currents exert minimal influence.The offshore distance of the island is found to determine a threshold for tombolo formation,which varies with island size.The maximum tombolo area and accretion volume are observed when the offshore distance is close to this threshold.关键词
离岸人工岛/岸滩演变/水动力泥沙模型/波生流/沿岸输沙/连岛浅滩Key words
offshore artificial island/beach evolution/wave-induced current/longshore sediment transport/tombolo分类
交通工程引用本文复制引用
陈弋,童朝锋,孟艳秋..日月湾人工岛工程对岸滩演变影响研究[J].水道港口,2025,46(4):498-507,10.基金项目
国家自然科学基金重点项目(51339005) （51339005）
