NUMERICAL SIMULATION STUDY ON DEPOSITION DOWNSTREAM ESTUARINE SLUICE

Xiping Dou, Xinzhou Zhang, Xiangming Wang, Jinhua Wang

Abstract


In order to resist tides and salt intrusion, there have been more than 300 tidal gates built at many river estuaries in China since 1960s. However, the serious deposition occurred at a lot of gates due to the changes of hydrodynamic and sediment conditions and lack of discharge from the rivers. At present, the research is mainly to analyze the reasons for siltation downstream gates and the measures of dredging. It is not enough for study on distribution simulation of deposition downstream sluice. Studies have shown that 2D numerical model cannot reflect the distribution of sediment siltation downstream gates. Therefore, it needs to develop 3D sediment numerical model for deposition prediction. In this paper, combined the feasibility study of a tidal gate at Mulanxi River, a physical model and 3D numerical model of sediment siltation downstream gate are conducted.

Keywords


tidal estuary; sediment deposition; numerical model

References


DONG Fengwu, DOU Xiping. 2001. 2002. The physical model experiment study on flood control engineering at the downstream reach of Mulanxi River, Report of Nanjing Hydraulic Research Institute (in Chinese)

QU Hongling, DOU Xiping, ZHAO Xiaodong, WANG Xiangming, XU Xuesong. 2011. Simulation of siltation downstream of floodgate in estuaries, the Ocean Engineering, Vol.29 No.2, 59-67 (in Cjinese)

X.P. DOU, H. L. QU, X. M. WANG, X.Z. ZHANG. 2011. Simulation study on deposition downstream estuarine gates, Proceedings of the Sixth International Conference on Asian and Pacific Coasts, Hong Kong, China, 1469-1476

ZHAO Xiaodong, Wang Xiangming, Xu Xuesong. 2011. Influence on Flood Control when Building Tidal Sluice in Mulan Creek Estuary, Fujian Province, China. Proceedings of the 6th International Conference on Asian and Pacific Coasts,587-595


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