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| 基于可控潮汐通道技术的水交换影响研究 |
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朱飞1,2, 罗锋1,2, 陈治澎2, 吴鸿博2, 王勇智3, 郑金海1, 陶爱峰1, 李瑞杰1
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1.河海大学海岸灾害及防护教育部重点实验室, 江苏 南京 210024;2.河海大学港口海岸与近海工程学院, 江苏 南京 210024;3.自然资源部第一海洋研究所, 山东 青岛 266061
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| 摘要: |
| 潮汐通道是海湾与外海之间实现水体高效交换的关键通道,可控潮汐通道技术指改变潮汐通道潮动力交换水平的研究手段。近年海湾水环境保护压力增大,有效恢复水环境的方式存在争议。以半封闭海湾柘林湾为例,基于有限元模型TELEMAC,提出一种基于闸控、潮汐通道疏浚的可控潮汐通道技术,从潮流动力、水交换等角度评估修复技术对湾内水环境影响。研究表明,闸控条件下,目标区域水体交换速率提高10%~20%,半交换周期缩短近一倍,湾内各区域20 d内水体交换率至少达到60%;潮汐通道疏浚与闸门联合控制下,水体交换速率进一步提高,20 d内水体完成70%的交换。基于闸控、潮汐通道疏浚的可控潮汐通道技术显著改善湾内水环境,对海湾水环境修复工作具有一定的参考意义。 |
| 关键词: 水交换 潮汐通道 半封闭海湾 数值模拟 柘林湾 |
| DOI：10.11759/hykx20230713003 |
| 分类号:TV1 |
| 基金项目:国家重点研发项目(2023YFC3007900);江苏省海洋科技创新项目(JSZRHYKJ202303,JSZRHYKJ202105) |
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| Study on the influence of water exchange based on controlled tidal channel technology |
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ZHU Fei1,2, LUO Feng1,2, CHEN ZhiPeng2, WU HongBo2, WANG YongZhi3, ZHENG JinHai1, TAO Aifeng1, LI RuiJie1
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1.Key Laboratory of Ministry of Education for Coastal Disaster and Protection, Hohai University, Nanjing 210024, China;2.College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210024, China;3.First Institute of Oceanography, MNR, Qingdao 266061, China
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| Abstract: |
| The tidal channel plays a crucial role in facilitating efficient water exchange between a bay and the open sea. Controllable tidal channel technology encompasses techniques used to modify tidal dynamics and regulate water exchange within these channels. In recent years, the environmental quality of bay waters has been steadily declining, and there is ongoing debate over the most effective strategies for restoration. Using the semi-enclosed Zhelin Bay as a case study, this research employs the finite element model TELEMAC to propose a novel approach that combines sluice gate control with channel dredging. The study evaluates the impact of this restoration method on the bay’s water environment, focusing on tidal dynamics and water exchange processes. The results show that under sluice-controlled conditions, the water exchange rate in the target area increases by 10%–20%, and the half-exchange period is nearly halved, with at least 60% of the water in various sections of the bay being exchanged within 20 days. When channel dredging is combined with sluice control, the water exchange rate improves further, with 70% of the water exchanged over the same period. This combined approach of sluice gate control and channel dredging significantly enhances the water environment within the bay, providing valuable insights and potential guidance for future bay water environment restoration projects. |
| Key words: water exchange tidal inlet semi-closed Bay numerical simulation ZheLin Bay |