Author(s): Lin Cai; Xiangyang Wei; Bin Cai; Dutian Lu; Zhenhua Song
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Keywords: No Keywords
Abstract: Discharge capacity under ice cover during ice flood period is an impo'lant foundation for the ice flood regulation of the Yellow River. It is also a main factor to assure the ice flood cont~ol safety. Calculation of flow resistance is mainly to determine the composite roughness which is worked out u~lly by the ice bottom roughness and river bed roughness. After that we can calculate the submerged ice area, the effective area of wetted cross-section and discharge capacity of cross-section. Finally we obtain the discluj. rge capacity under ice cover by the adjusted discharge factors of ice flood period and tbe empirical formulas.
Year: 1998