Modeling on flash flood disaster induced by bed load
Shuyou Cao , Xingnian Liu , Er Huang , Kejun Yang
Transactions of Tianjin University ›› 2008, Vol. 14 ›› Issue (4) : 296 -299.
Modeling on flash flood disaster induced by bed load
Flash floods result from a complex interaction among hydro-meteorological, hydrological, and hydraulic processes across various spatial and temporal scales. Sichuan Province suffers flash floods frequently owing to mountain weather and topography. A flash flood and gravel bed load transport are two key relative problems in mountain river engineering. Bed materials are often encountered in alternate scouring and deposition in mountain fluvial processes during a flash flood. In this circumstance, CRS-1 bed load numerical model jointly with scale physical model is employed to predict water level and gravel bed scour and deposition for design of flood control dykes and flash flood disaster mitigation. A case study on the mechanism of a flash flood disaster induced by bed load transport for a hydropower station in Sichuan Province is conducted. Finally, suggestions to protect the hydropower station are proposed.
flash flood / gravel / bed load / physical model / numerical model
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