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To analyze the impact of the construction of the Hengsha Dongtan (Phase 6-8) project on the Yangtze River Estuary, a two-dimensional tidal flow model was established using Delft3D, and tidal level and velocity calibration verification was conducted using existing hydrological data from 2008 and 2016. Based on the hydrological conditions in normal and flood years, the hydrological conditions, such as tidal volume, tidal level, and flow field in the main tributaries of the Yangtze River Estuary before and after the implementation of the Hengsha Dongtan Phase 6-8 Project were simulated. The results show that under two flow conditions, the construction of the Hengsha Dongtan Phase 6-8 project has a relatively small impact on the rising and falling tide flows of the main tributaries of the Yangtze River Estuary. The variation of high and low tide levels in the Yangtze River Estuary does not exceed 0.01 m, and the variation of high and low tide levels in the water area where the project is located does not exceed 0.02 m; The project has no significant adverse impact on the large-scale flow field structure of the Yangtze River Estuary. The rising tide velocity of the Beigang Waterway and Beigang Beisha Jiahong has decreased, with a maximum decrease of 0.03 m/s in Beigang Waterway and 0.02 m/s in Beigang Beisha Jiahong. The rising tide velocity of the Hengsha Channel and the North Channel of the Yangtze River Estuary has remained basically unchanged. Under the current riverbed terrain and engineering boundary conditions (all of the Hengsha East Beach project has been completed), there is a northwest southeast channel on the northeast side of the beach surface. The northern edge of the eighth phase project and the northern edge of the downstream sand body have a high ebb tide velocity, with a maximum velocity of 1.5 m/s or above, which is not conducive to the stability of the Hengsha East Beach regulation project.

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为分析横沙东滩(六~八期)工程建设对长江口的影响,通过Delft3D建立长江口二维潮流模型,结合2008、2016年已有水文资料进行潮位、流速率定验证。基于平水年、洪水年水文条件,模拟计算横沙东滩六~八期工程实施前后长江口主要汊道潮量、潮位、流场等水文条件。结果表明,两种流量条件下,横沙东滩六~八期工程的建设对长江口主要汊道涨、落潮流量的影响较小,长江口高、低潮位的变化不超过0.01 m,工程所在水域高、低潮位的变化不超过0.02 m;工程对长江口大面流场结构无明显不利影响,北港水道、北港北沙夹泓涨潮流速有所减小,北港水道最大减幅为0.03 m/s,北港北沙夹泓最大减幅为0.02 m/s,横沙通道、长江口北槽深水航道涨潮流速基本无变化;在现状河床地形及工程边界条件下(横沙东滩工程全部建成),东北侧滩面存在西北—东南向窜沟,八期工程北缘和下游沙体北缘,落潮流速较大,最大流速在1.5 m/s以上,不利于横沙东滩整治工程的稳定。

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宋荣华(1998-),男,研究方向为水动力学数值模拟,E-mail:

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宋荣华(1998-),男,研究方向为水动力学数值模拟,E-mail:

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宋荣华(1998-),男,研究方向为水动力学数值模拟,E-mail:

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横沙东滩(六~八期)工程对长江口影响的数值模拟研究
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宋荣华 , 唐建华
水电能源科学 | 水文水资源与环境 2023,41(11): 26-30
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水电能源科学 | 水文水资源与环境 2023, 41(11): 26-30
横沙东滩(六~八期)工程对长江口影响的数值模拟研究
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宋荣华 , 唐建华
作者信息
  • 长江勘测规划设计研究有限责任公司上海分公司,上海 200439
  • 宋荣华(1998-),男,研究方向为水动力学数值模拟,E-mail:

Numerical Simulation Study on Influence of Hengsha Dongtan (Phase 6-8) Project on the Yangtze River Estuary
Rong-hua SONG , Jian-hua TANG
Affiliations
  • Shanghai Branch of Changjiang Survey, Planning, Design and Research Co, Ltd, Shanghai 200439, China
出版时间: 2023-11-25 doi: 10.20040/j.cnki.1000-7709.2023.20230386
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为分析横沙东滩(六~八期)工程建设对长江口的影响,通过Delft3D建立长江口二维潮流模型,结合2008、2016年已有水文资料进行潮位、流速率定验证。基于平水年、洪水年水文条件,模拟计算横沙东滩六~八期工程实施前后长江口主要汊道潮量、潮位、流场等水文条件。结果表明,两种流量条件下,横沙东滩六~八期工程的建设对长江口主要汊道涨、落潮流量的影响较小,长江口高、低潮位的变化不超过0.01 m,工程所在水域高、低潮位的变化不超过0.02 m;工程对长江口大面流场结构无明显不利影响,北港水道、北港北沙夹泓涨潮流速有所减小,北港水道最大减幅为0.03 m/s,北港北沙夹泓最大减幅为0.02 m/s,横沙通道、长江口北槽深水航道涨潮流速基本无变化;在现状河床地形及工程边界条件下(横沙东滩工程全部建成),东北侧滩面存在西北—东南向窜沟,八期工程北缘和下游沙体北缘,落潮流速较大,最大流速在1.5 m/s以上,不利于横沙东滩整治工程的稳定。

横沙东滩  /  长江口  /  数值模拟  /  工程建设

To analyze the impact of the construction of the Hengsha Dongtan (Phase 6-8) project on the Yangtze River Estuary, a two-dimensional tidal flow model was established using Delft3D, and tidal level and velocity calibration verification was conducted using existing hydrological data from 2008 and 2016. Based on the hydrological conditions in normal and flood years, the hydrological conditions, such as tidal volume, tidal level, and flow field in the main tributaries of the Yangtze River Estuary before and after the implementation of the Hengsha Dongtan Phase 6-8 Project were simulated. The results show that under two flow conditions, the construction of the Hengsha Dongtan Phase 6-8 project has a relatively small impact on the rising and falling tide flows of the main tributaries of the Yangtze River Estuary. The variation of high and low tide levels in the Yangtze River Estuary does not exceed 0.01 m, and the variation of high and low tide levels in the water area where the project is located does not exceed 0.02 m; The project has no significant adverse impact on the large-scale flow field structure of the Yangtze River Estuary. The rising tide velocity of the Beigang Waterway and Beigang Beisha Jiahong has decreased, with a maximum decrease of 0.03 m/s in Beigang Waterway and 0.02 m/s in Beigang Beisha Jiahong. The rising tide velocity of the Hengsha Channel and the North Channel of the Yangtze River Estuary has remained basically unchanged. Under the current riverbed terrain and engineering boundary conditions (all of the Hengsha East Beach project has been completed), there is a northwest southeast channel on the northeast side of the beach surface. The northern edge of the eighth phase project and the northern edge of the downstream sand body have a high ebb tide velocity, with a maximum velocity of 1.5 m/s or above, which is not conducive to the stability of the Hengsha East Beach regulation project.

Hengsha Dongtan  /  the Yangtze River Estuary  /  numerical simulation  /  engineering construction
宋荣华, 唐建华. 横沙东滩(六~八期)工程对长江口影响的数值模拟研究. 水电能源科学, 2023 , 41 (11) : 26 -30 . DOI: 10.20040/j.cnki.1000-7709.2023.20230386
Rong-hua SONG, Jian-hua TANG. Numerical Simulation Study on Influence of Hengsha Dongtan (Phase 6-8) Project on the Yangtze River Estuary[J]. Water Resources and Power, 2023 , 41 (11) : 26 -30 . DOI: 10.20040/j.cnki.1000-7709.2023.20230386
2023年第41卷第11期
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doi: 10.20040/j.cnki.1000-7709.2023.20230386
  • 接收时间:2023-03-16
  • 首发时间:2026-01-27
  • 出版时间:2023-11-25
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  • 收稿日期:2023-03-16
  • 修回日期:2023-04-22
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    长江勘测规划设计研究有限责任公司上海分公司,上海 200439
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2种不同金属材料的力学参数

Family
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Number of
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种数
Number of
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种数
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Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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