兴化湾工程建设对周边海域水沙环境影响
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摘要
基于实测水文泥沙资料,建立和验证了兴化湾海域大小嵌套的二维潮流泥沙数学模型;模型与实测结果在水动力泥沙方面吻合,验证结果良好。以兴化湾港口规划工程为例,运用所建模型分析相关工程实施对周边海域水沙环境影响。结果表明:规划工程实施后,湾内流速局部有所调整;但变化范围和幅度均相对有限。采用断面潮量计算方法,得出工程前后湾内纳潮量中潮期间减小15%,大潮期间则为13. 1%; 1个月后,湾内水体交换率均在40%以上,与天然条件相比,交换率减小了6. 8%;工程后湾内含沙量仍保持了较低的状态;同时受近岸区滩涂围垦影响,使浅海区再悬浮泥沙来源减少,导致南侧海域含沙量有所降低。研究成果为兴化湾海域科学合理的规划布局提供一定的参考。
Based on the measured hydrological and sediment data,a two-dimensional mathematical model of tidal current and sediment in Xinghua Bay was established and validated. The model agreed well with the measured results in terms of hydrodynamic and sediment. Taking Xinghua Bay Port Planning Project as an example,the model was used to analyze the impact of related projects on water and sediment environment in the surrounding sea area. The results show that,after the implementation of the planning project,the flow velocity in the bay has been adjusted locally,but the range and range of variation are relatively limited; the cross-section tidal volume calculation method is used to calculate the tidal volume in the bay before and after the project is reduced by 15% and the tidal volume is 13. 1%; one month later,the water exchange rate in the bay is above 40%,compared with the natural conditions. The exchange rate decreased by 6. 8%; the sediment concentration in the bay remained low after the project,and the reclaimed sediment source in the shallow sea area decreased due to the reclamation of the nearshore beach. It will provide some references for scientific and rational planning of Xinghua Bay.
Based on the measured hydrological and sediment data,a two-dimensional mathematical model of tidal current and sediment in Xinghua Bay was established and validated. The model agreed well with the measured results in terms of hydrodynamic and sediment. Taking Xinghua Bay Port Planning Project as an example,the model was used to analyze the impact of related projects on water and sediment environment in the surrounding sea area. The results show that,after the implementation of the planning project,the flow velocity in the bay has been adjusted locally,but the range and range of variation are relatively limited; the cross-section tidal volume calculation method is used to calculate the tidal volume in the bay before and after the project is reduced by 15% and the tidal volume is 13. 1%; one month later,the water exchange rate in the bay is above 40%,compared with the natural conditions. The exchange rate decreased by 6. 8%; the sediment concentration in the bay remained low after the project,and the reclaimed sediment source in the shallow sea area decreased due to the reclamation of the nearshore beach. It will provide some references for scientific and rational planning of Xinghua Bay.
引文
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9林雪玉.以兴化湾南岸开发推进莆田国家高新区产城融合发展[J].海峡科学,2018(5):36-41Lin Xueyu.Promoting the integration of production and city in Putian national high-tech zone by developing the south bank of Xinghua Bay[J].Strait Science,2018(5):36-41
10唐艳平,林祥.福建沿海台风浪数值模拟及特性分析[J].水运工程,2017(4):65-71Tang Yangping,Lin Xiang.Numerical simulation and characteristic analysis of typhoon waves off Fujian coast[J].Waterway Engineering,2017(4):65-71
2田佳,余嵘.福建兴化湾附近海域水动力特征研究[J].水电能源科学,2017(9):69-72Tian Jia,Yu Rong.Research on hydrodynamic characteristics in the vicinity of Xinghua Bay in Fujian Province[J].International Journal Hydroelectric Energy,2017(9):69-72
3王世儒,雷伟丽.兴化湾海域泥沙特征及地形变化分析[J].长江科学院院报,2017,34(8):1-5Wang Shiru,Lei Weili.Sediment characteristics and topographic changes in Xinghua Bay[J].Journal of Yangtze River Scientific Research Institute,2017,34(8):1-5
4童朝锋,郑联枭,孟艳秋.兴化湾悬沙输移机理分析[J].水利水运工程学报,2016(2):1-10Tong Chaofeng,Zheng Lianxiao,Meng Yangqiu.Mechanism analysis of suspended sediment transport in Xinghua Bay[J].Hydro-Science and Engineering,2016(2):1-10
5尚文猛.福清兴化湾海上风电场工程地质条件研究[J].低碳世界,2018(22):37-42Shang Wenmeng.Study on engineering geological conditions of Xinghua Bay offshore wind farm in Fuqing[J].Low Carbon World,2018(22):37-42
6童朝锋,王俊杰,张青.兴化湾潮汐潮流特性及工程影响分析[J].水利水运工程学报,2015(1):53-60Tong Chaofeng,Wang Junjie,Zhang Qing.Tidal current characteristics and engineering impact analysis in Xinghua Bay[J].Hydro-Science and Engineering,2015(1):53-60
7蒋秋飙.海岸带围垦对海湾环境影响的研究[D].青岛:中国海洋大学:2011Jiang Qiubiao.Study on the impact of coastal reclamation on the bay environment[D].Qingdao:Ocean University of China,2011
8林顺琴.福建兴化湾北岸某软基处理工程最终沉降量估算分析[J].中国煤炭地质,2018(增刊1):76-80Lin Shunqin.Estimation and analysis of ffinal settlement of a soft foundation treatment project on the north bank of Xinghua Bay,Fujian Province[J].Coal Geology of China,2018(S1):76-80
9林雪玉.以兴化湾南岸开发推进莆田国家高新区产城融合发展[J].海峡科学,2018(5):36-41Lin Xueyu.Promoting the integration of production and city in Putian national high-tech zone by developing the south bank of Xinghua Bay[J].Strait Science,2018(5):36-41
10唐艳平,林祥.福建沿海台风浪数值模拟及特性分析[J].水运工程,2017(4):65-71Tang Yangping,Lin Xiang.Numerical simulation and characteristic analysis of typhoon waves off Fujian coast[J].Waterway Engineering,2017(4):65-71