Research on the Numerical Simulation of Silting in Floodplain and Scouting in Main Channel of Over-Bank Flooding in the Lower Yellow River

Abstract:

The 2-D water and sediment mathematical model which reflects silting in floodplain and scouting in main channel of over-bank flooding in the Lower Yellow River has been set up in this paper. Through carrying on 2-D water and sediment numerical simulation of the “96.8” typical flood, the author studied influence of over-bank flooding on flood travel and transverse exchange. The primary simulation results show that, adopting the over-bank flooding for silting in floodplain and scouting in main channel effectively guaranteed and expanded transverse exchange between floodplain and main channel and maintained the river channel vigor. This can relieve “secondary suspended river” states in the Low Yellow River to a certain extent; at the same time, the different magnitudes of over-bank floods have different effect of silting in floodplain and scouting in main channel.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 3692-3696
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.3692
• Online since: May 2011
• Authors: Xiao Lei Zhang, Dong Po Sun, Feng Ran Zhang
• Keywords: Lower Yellow River, Over-Bank Flooding, Secondary Suspended River, Silting in Floodplain and Scouting in Main Channel, Transver Exchange

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