摘要
提出整治工程漫顶溢流时溢流量按宽顶堰或短渠计算;针对漫滩地洪水主流存在扩散程度不同的问题,简化为用扩散角表示的沿程直线变化主流宽度,进而确定断面平均流速。根据计算的水力要素及选择的冲刷深度公式估算冲刷深度。通过实际工程计算分析,结果满足工程要求。
The text introduces the calculation of overfalling quantity should be based on broad crested weir or short canal when renovating overtopping flooding, in allusion to the question that flood mainstream exists various pervasion degree, simplifying alongwith watercourse beeline various artery breadth showed by angle of flare, then determines section average velocity, according to the calculational hydraulic constituents and alternative erosion depth formula（5 ） （ 6 ）, then to rough estimate scour deepness, according to the analysis of practical engineering calculation, the results satisfy engineering＇s requirement.
出处
《平顶山工学院学报》
CAS
2006年第3期40-41,共2页
Journal of Pingdingshan Institute of Technology
关键词
冲刷
宽顶堰
短渠
漫滩地
erosion
broaderested weir
short canal
washland
