| ZHENG Jinhai,HOANG Quoc Xuyen,ZHANG Chi,CHEN Kefeng,DONG Xiaowei,LEI Gang,WANG Yigang. 2017. Behavior-oriented calculation of the annual coastal bathymetry evolution caused by a reclamation work. Acta Oceanologica Sinica, 36(11):86－93 |
| Behavior-oriented calculation of the annual coastal bathymetry evolution caused by a reclamation work |
| 围垦工程引起多年海岸冲淤演变的经验计算方法 |
| Received:December 03, 2016 Revised:January 10, 2017 |
| DOI：10.1007/s13131-017-1139-3 |
| Key words:coastal evolution behavior-oriented formula reclamation numerical simulation |
| 中文关键词: 围垦工程 海岸演变 经验公式 数值模拟 |
| 基金项目: |
| Author Name | Affiliation | E-mail | | ZHENG Jinhai | 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 | | | HOANG Quoc Xuyen | 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 | | | ZHANG Chi | 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 | zhangchi@hhu.edu.cn | | CHEN Kefeng | Nanjing Hydraulic Research Institute, Nanjing 210024, China | | | DONG Xiaowei | China Harbour Engineering Company, Beijing 100027, China | | | LEI Gang | Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China | | | WANG Yigang | 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. |
| 中文摘要: |
| 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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