长沙理工大学学报（自然科学版）2025，Vol.22Issue(5)：103-114,12.DOI:10.19951/j.cnki.1672-9331.20250409002
养殖取排水沟渠对海湾泥沙冲淤的影响研究
Influence of aquaculture water intake and drainage channels on sediment erosion/deposition in bays
摘要
Abstract
[Purposes]This paper aims to fully understand the impact of aquaculture water intake and drainage channels on the hydrodynamics and sediment erosion/deposition in the bay,thereby providing a scientific basis for its sustainable development.[Methods]This study established a 2D tidal current-sediment numerical model for Dingzi Bay using MIKE 21 software.Following rigorous validation,a comparative analysis was conducted to investigate the erosion/deposition evolution mechanisms in the bay's navigation channels under two operational scenarios:with and without aquaculture water intake and drainage channels.[Findings]Dingzi Bay exhibits an overall geomorphological pattern of navigation channel erosion flanked by shoal deposition.The operation of aquaculture water intake and drainage channels has intensified erosional processes in the main channel and estuary mouth,with the annual maximum scour depth increasing by approximately 0.08 m.Concurrently,sediment accumulation on adjacent shoals has been amplified.The annual maximum siltation thickness increases by approximately 0.06 m.Due to the opening of aquaculture water intake and drainage channels,significant scouring has occurred at the mouths of these channels,such as near the lagoon outlet of Ludao Island and on both sides of Magu Island,with a maximum scouring depth of approximately 1.02 m.[Conclusions]Aquaculture water intake and drainage channels exert a notable influence on sediment erosion/deposition processes and hydrodynamic regimes within Dingzi Bay.In the presence of such channels,the flow velocities in Dingzi Bay's navigation channels experience a substantial increase.There are also marked alterations in the suspended sediment concentration across cross-sections and in the patterns of sediment erosion/deposition in the area.Therefore,when conducting numerical simulations of hydrodynamic sediment transport in bays,it is essential to retain the aquaculture water intake and drainage channels as much as possible.If simplification is necessary,the impact of these channels on the hydrodynamic sediment dynamics in the bay should be analyzed first.关键词
地貌演化/养殖取排水沟渠/泥沙冲淤/数值模拟/丁字湾Key words
geomorphological evolution/aquaculture water intake and drainage channel/sediment erosion/deposition/numerical simulation/Dingzi Bay分类
海洋科学引用本文复制引用
巩秋悦,刘子铭,朱君,范永斌,李怡,董新兰,张兴杰,王爽..养殖取排水沟渠对海湾泥沙冲淤的影响研究[J].长沙理工大学学报（自然科学版）,2025,22(5):103-114,12.基金项目
自然资源部海洋生态保护与修复重点实验室/福建省海洋生态保护与修复重点实验室开放基金项目(EPR2023007) （EPR2023007）
烟台市科技创新发展计划基础研究重点项目(2022JCYJ028) （2022JCYJ028）
国家自然科学基金项目(52571296) Open Fund Project of Key Laboratory of Marine Ecology Protection and Restoration,Ministry of Natural Resources/Fujian Province Key Laboratory of Marine Ecological Conservation and Restoration(EPR2023007) （52571296）
Key Project of Basic Research of Yantai Science and Technology Innovation and Development Programme(2022JCYJ028) （2022JCYJ028）
National Natural Science Foundation of China(52571296) （52571296）
