| 摘要: |
| 我国大量沿岸入海河流的河口位置，存在不同程度的泥沙冲淤问题，影响沿海地区的防潮、排涝和灌溉需求，以及区域防灾减灾和经济安全保障。特别是在外海潮波辐聚区域，排涝出口的选择一直是工程和科研工作者关注的热点问题，需要综合考虑平均潮差、高潮位等沿海潮汐要素，滩槽水道发育等自然条件，以及周边围垦工程等人类活动影响。文章利用多时相遥感影像，得到滩面潮沟横向摆动特征、迁移速率与平均潮差之间的关系、二分水滩脊迁移速度影响因素、排涝河口距外海深槽距离与排涝通道弯曲程度的制约因素等，研究成果可为类似工程规划选址提供依据。 |
| 关键词: 潮波辐聚 内涝外排 潮沟摆动 滩脊迁移 曲流发育 |
| DOI：10.20016/j.cnki.hykfygl.2024.07.002 |
| Received:October 16, 2023Revised:May 08, 2024 |
| 基金项目:江苏省水利科技项目（2021025、2022020）. |
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| Study on the Evolution of Drainage Outlets Along Tidal Convergence Area |
| YUAN Cong,SUN Xiying,DING Lei,QIN Yipei,CHEN Ben |
| Huaishuxinhe Management Office;Institute of Geological Exploration and Technology of Jiangsu;Nanjing Hydraulic Research Institute;Yancheng Waterway Monitoring and Management Institute |
| Abstract: |
| There are different degrees of sediment scouring and silting problems in the estuaries of a large number of coastal rivers in China, which affect the demand for damp prevention, drainage and irrigation in coastal areas, as well as regional disaster prevention and mitigation and economic security. Especially in the area where tidal waves converge in the open sea, the selection of drainage outlet has always been a hot issue for engineers and scientific researchers, and it is necessary to comprehensively consider coastal tidal factors such as mean tidal range and high tide level, natural conditions such as the development of tidal channels and waterways, and the impact of human activities such as surrounding reclamation projects. Based on multi-temporal remote sensing images, the transverse oscillation characteristics of the tidal channel on the beach surface, the relationship between the migration rate and the mean tidal range, the influencing factors of the migration rate of the dichotomy beach ridge, the distance between the drainage estuary and the deep trough and the curvature of the drainage channel are obtained, and the research results can provide a basis for the planning and site selection of similar projects. |
| Key words: Tidal wave convergence, Waterlogging and outflow, Tidal channel swing, Beach ridge migration, Meandering development |
