摘要
本文根据试验和实测资料分析，首先改进了非均匀沙群体沉速公式和挟沙力公式，使公式能较准确地反映河床的冲淤特性，特别是反映像揭河底冲刷这种剧烈的冲淤变形。冲淤量的确定按不平衡输沙公式及沙量平衡方程推求，文中给出了渭河、北洛河及黄河北干流一场高含沙大洪水揭河底冲刷过程的验算结果。
Based on analysis of actual measurement and experiment data, the equations of uneven sediment sinking velocity and sediment-laden capacity have been improved in the paper, which reflects river bed erosion and siltation properties more accurately, especially for such severe erosion and siltation as river bed blow up scouring. The erosion and siltation amounts are calculated through non-balance sediment delivery formula and sediment volume equation. The calculation outputs are given in the paper for hyperconcentration floods causing bed blowing up scouring in Weihe River, Beiluohe River and the North Main Stream reach of the Yellow River respectively.
出处
《人民黄河》
北大核心
1997年第2期1-5,共5页
Yellow River
基金
"八五"攻关项目
关键词
群体沉速
挟沙力公式
冲刷
高含沙水流
group sinking velocity, sediment-laden capacity formula, blowing up scouring,hyperconcentration flow
