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Comprehensive analysis on the sediment siltation in the upper reach of the deepwater navigation channel in the Yangtze Estuary

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Abstract

The results from both the field measurements and numerical simulation were reported to comprehensively analyze the sediment siltation in the upper reach of the Deepwater Navigation Channel Project in the Yangtze Estuary after the project has been implemented. In this research, firstly some basic information about the river evolution in the Yangtze Estuary is analyzed, including the variations of water depths in the Hengsha Passage and the inlet cross-sections of the North Passage and the South Passage, and changes of diversion ratios of ebb flow and sediment flux in the North Passage and the South Passage. Then the Delft3D-Flow model is applied to simulate the hydrodynamics and sediment transport in the Yangtze Estuary. This model has been calibrated and the simulated results agree well with the measured data of the tidal levels, flow velocities and suspended sediment concentration (Ssc), indicating that the model can well simulate the hydrodynamics and sediment transport of the Yangtze Estuary caused by the Deepwater Navigation Channel Project. The research results show that the development of the Hengsha Passage and decrease of diversion ratio of ebb flow and sediment flux in the North Passage are the main reasons of sediment siltation in the upper reach of the Deepwater Navigation Channel in the Yangtze Estuary.

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Authors and Affiliations

  1. College of Civil Engineering, Tongji University, Shanghai, 200092, China

    Cui-ping Kuang  (匡翠萍), Wei Chen  (陈维) & Lu-lu He  (贺露露)

  2. College of Marine Sciences, Shanghai Ocean University, Shanghai, 201306, China

    Jie Gu  (顾杰)

Authors
  1. Cui-ping Kuang  (匡翠萍)
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  2. Wei Chen  (陈维)
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  3. Jie Gu  (顾杰)
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  4. Lu-lu He  (贺露露)
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Corresponding author

Correspondence to Jie Gu  (顾杰).

Additional information

Project supported by the Key Subject Foundation of Shanghai Education Committee (Grant No. J50702), the National Key Basic Research Development Program of China (973 Program, Grant No. 2012CB957704).

Biography: KUANG Cui-ping (1966-), Female, Ph. D., Professor

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Kuang, Cp., Chen, W., Gu, J. et al. Comprehensive analysis on the sediment siltation in the upper reach of the deepwater navigation channel in the Yangtze Estuary. J Hydrodyn 26, 299–308 (2014). https://doi.org/10.1016/S1001-6058(14)60033-0

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  • DOI: https://doi.org/10.1016/S1001-6058(14)60033-0

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