水力发电学报2001，Vol.1Issue(1)：25-30,6.
黄河干支流洪水冲刷初步研究
Flood Scour Rate of the Yellow River
摘要
Abstract
The Yellow River carries a huge amount of sediment and its floodsoften cause rapid and severe erosion and deposition.The channel bed of the Yellow River usually behaves degradation during a flood. In some cases vigorous erosion up to 10 meters takes place in a short period of time.Such phenomenon usually occurs in the middle reach of the Yellow River and its tributaries such as the Weihe River, the North Luohe River, etc. Nevertheless, Chinese river engineers have made two conclusions for scour and fill patterns in the Yellow River and its tributaries. One is that scour appears in flood periods, and fill does in non-flood periods. The other is that scour occurs in the rising of floods, and fill does in receding of floods. Riverbed scour of the main channel by floods in the Yellow River and its tributaries was investigated, including scour by hyper-concentrated floods. Flood scour usually causes variation of river cross-sections in a similar way when the sediment inflow is less than the sediment-laden capacity. Eq.(6) for scour rate in the main channel derived based on the momentum and continuous equations was verified by field data. This equation indicates that unsteady flow scour rate is proportional to the flow density, the velocity of the flood peak, the rising rate of flow discharge per width, and so on.The maximum scour depth after a flood could be predicted from Eq.(7) or estimated by the subsequent equation关键词
洪水冲刷/非恒定水流/黄河/主槽冲刷/河床演变分类
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梁志勇,王兆印,刘玉忠,隋忠诚,候国柱..黄河干支流洪水冲刷初步研究[J].水力发电学报,2001,1(1):25-30,6.基金项目
本项研究得到以下两个基金项目的资料 （）
