Journal of East China Normal University(Natural Sc ›› 2013, Vol. 2013 ›› Issue (4): 106-119.

• Article • Previous Articles     Next Articles

Estimation of the sediment siltation in the planned excavated-in harbor in the Hengsha Shoal of the Yangtze Estuary Estuary

GE Jian-zhong1, JIN Liu2, DING Ping-xing1, SHAO Rong-shun3,YU Zhi-ying1, GUO Wen-yun1   

  1. 1. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China;
    2. Administration Bureau of Navigation Channels in Yangtze Estuary, Ministry of Transportation, Shanghai 200003, China;
    3. CCCC Third Harbor Consultants, Shanghai 200032, China
  • Received:2013-04-01 Revised:2013-07-01 Online:2013-07-25 Published:2013-07-11

Abstract: Several different methods, including algorithm of siltation estimation in state regulation of port and waterway, bottom shear stress model and tide prism estimation, were used to make prediction for sedimentation siltation in the proposed excavated-in harbor, which would be located in the Hengsha Shoal to improve the shipping capacity in the Changjiang Estuary. The results from these methods turns out to be consistent. The overall load and strength of sediment siltation for condition of basin gate at -7 m depth and 0.3 kg/m3 sediment concentration is 2.0×107~2.2×107 m3 and 0.3~0.4 m/a in the basin and 0.6×107~1.2×107 m3 and 0.3~0.4 m/a in outer shipping channel. And the maximum siltation mainly centralizes near the basin gate with a distance of 4~6 km. And the prediction indicates the siltation will be significantly decreased if the basin gate moves deeper with lower suspended sediment concentration.

Key words: excavated-in harbor, Hengsha Shoal, siltation

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