| 围垦工程引起多年海岸冲淤演变的经验计算方法 |
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| 引用本文： | 郑金海,HOANG Quoc Xuyen,张弛,陈可锋,董晓伟,王义刚,张清扬.围垦工程引起多年海岸冲淤演变的经验计算方法[J].海洋学报(英文版),2017,36(11):86-93. |
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| 作者姓名： | 郑金海 HOANG Quoc Xuyen 张弛 陈可锋 董晓伟 王义刚 张清扬 |
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| 作者单位： | 河海大学, 水文水资源与水利工程科学国家重点实验室, 南京, 210098;河海大学, 港口海岸与近海工程学院, 南京, 210098,河海大学, 水文水资源与水利工程科学国家重点实验室, 南京, 210098;河海大学, 港口海岸与近海工程学院, 南京, 210098,河海大学, 水文水资源与水利工程科学国家重点实验室, 南京, 210098;河海大学, 港口海岸与近海工程学院, 南京, 210098,南京水利科学研究院, 南京, 210024,中国港湾工程有限责任公司, 北京, 100027,Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China,河海大学, 港口海岸与近海工程学院, 南京, 210098 |
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| 摘 要： | 提出了一个改进的经验公式，用以计算围垦工程引起的淤泥质海岸多年冲淤演变。该经验公式假定在年时间尺度上，地形变化与潮流场变化具有密切联系。引入了一个冲刷折减系数，将传统公式的适用范围从淤积计算拓展到可以同时计算冲刷和淤积。建立了冲淤率年际变化与水深变化之间的关系式，可节省计算时间。将改进公式应用于江苏沿海小庙洪水道，较好地复演了边滩围垦工程影响下周边地形在3年时间内的演变，表明所改进的公式具有一定的可靠性。
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| 关 键 词： | 围垦工程 海岸演变 经验公式 数值模拟 |
| 收稿时间： | 2016/12/3 0:00:00 |
| 修稿时间： | 2017/1/10 0:00:00 |
Behavior-oriented calculation of the annual coastal bathymetry evolution caused by a reclamation work |
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| ZHENG Jinhai,HOANG Quoc Xuyen,ZHANG Chi,CHEN Kefeng,DONG Xiaowei,LEI Gang and WANG Yigang.Behavior-oriented calculation of the annual coastal bathymetry evolution caused by a reclamation work[J].Acta Oceanologica Sinica,2017,36(11):86-93. |
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| Authors: | ZHENG Jinhai HOANG Quoc Xuyen ZHANG Chi CHEN Kefeng DONG Xiaowei LEI Gang and WANG Yigang |
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| Institution: | State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China,State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China,State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China,Nanjing Hydraulic Research Institute, Nanjing 210024, China,China Harbour Engineering Company, Beijing 100027, China,Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China and College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | A behavior-oriented formula is improved to calculate the annual coastal bathymetry evolution caused by a reclamation work. This formula is based on a simple hypothesis that, on the time scale of years, the bathymetry evolution is closely related to the change of tidal current field due to the reclamation work. A new coefficient, named the erosion reduction coefficient, is introduced to extend the original formula for applications in calculating bed erosion. A simplified relationship between the annual variation of the siltation/erosion rate and the water depth is introduced to more realistically represent the long-term process of the bathymetry evolution. The improved formula is applied to calculate the bathymetry evolution in 3 a following a reclamation project in the Xiaomiaohong Tidal Channel in Jiangsu coast in China. The results compare well with measurements and those obtained from a process-based numerical model, demonstrating the capability of the improved behavior-oriented formula in reproducing the impact of the reclamation project on the local bathymetry evolution. |
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| Keywords: | coastal evolution behavior-oriented formula reclamation numerical simulation |
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