| 摘要: |
| 本文关注嘉兴港乍浦港区码头航道发生溢油事故对周边环境敏感区影响，应用MIKE21软件，基于拉格朗日“油粒子”理论并考虑溢油入海后不同过程影响构建平面二维数值模型，采用连续工况法设计5 200组工况对该地区水文气象及溢油条件的组合工况实现全覆盖，得到溢油72 h油膜扩散状况并将周边主要敏感目标区域按照溢油风险指数计算结果进行区域划分。研究结果表明，连续工况相比随机工况更具有地域典型性和非偶然性，连续工况下溢油海上扩散影响统计面积最高达到2 547.0 km2，九龙山重要滨海旅游区、海盐农渔业区和杭州湾湿地海洋保护区属于高风险区，受到该地区航道溢油事故油膜影响大，而其他敏感目标所受影响程度随油膜扩散距离而不同。 |
| 关键词: 嘉兴港区 水动力模型 溢油扩散 海域敏感资源保护区 风险影响预测 |
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| 基金项目:国家重点研发专项（2018YFB1501901）;浙江省自然科学基金项目（LO20D060003） |
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| Numerical Simulation of Oil Spill Diffusion in Jiaxing Port on the North Coast of Hangzhou Bay by Continuous Working Condition Method |
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Li Ran, Xu Xuefeng, Song Zekun, Yang Wankang, Yuan Xingzhi
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Second Institute Of Oceanography,MNR
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| Abstract: |
| This paper focuses on the impact of oil spills on sensitive areas in the wharf channel of Zhapu Port Area of Jiaxing Port, applies MIKE21 software, constructs a planar two-dimensional numerical model based on the Lagrange "oil particle" theory and considers the influence of different processes after oil spills into the sea, and uses the continuous working condition method to design 5 200 working conditions to achieve full coverage of the combined working conditions of hydrometeorology and oil spill conditions in the area, obtains the oil film diffusion status of oil spill 72 h, and divides the surrounding main sensitive target areas according to the calculation results of oil spill risk index. The results show that the continuous working conditions are more geographically typical and non-accidental than the random working conditions, and the statistical area of the offshore diffusion impact of oil spills under continuous working conditions reaches up to 2 547.0 km2, and the important coastal tourism areas of Jiulongshan, Haiyan Agricultural and Fishery Area and Hangzhou Bay Wetland Marine Protected Area are high-risk areas, which are greatly affected by the oil film of oil spills in waterways in this area, while the degree of impact of other sensitive targets varies with the spread distance of the oil film. |
| Key words: Jiaxing Port Hydrodynamic model Oil spill diffusion Marine sensitive resources protection area Risk impact prediction |
