摘要
以都江堰二王庙水文站9年实测的卵石推移质输沙率资料和对应的水力参数为基础,选用6个有代表性的公式进行了分析计算和对比。结果表明,可以采用沙莫夫公式计算起动流速,计算输沙率应考虑床面不动颗粒所占比例的影响。当采用各自定义的代表粒径时,只有爱因斯坦公式能适用。当统一采用D35时,各公式都具有较好的精度和适用性。
Based on 9 years＇ field data of bed-load transport and the corresponding hydraulic parameters at the Erwangmiao hydrology station on Dujiangyan river, 6 formulae for the prediction of the sediment transport are analyzed. It is concluded that the critical velocity could be calculated by Sharmov formula and the percentage of immobile particles of the bed should be considered for calculating the transport rate. Only Einstein formula performs well if all formulae are used with their own representative diameter. The results show that the formulae have good precision and reasonable application when D35 is used in all formulae.
出处
《水力发电学报》
EI
CSCD
北大核心
2006年第3期21-25,5,共6页
Journal of Hydroelectric Engineering
基金
国家自然科学基金资助项目(50279013
50221903)
关键词
河流动力学
都江堰
推移质
输沙率
river mechanics
Dujiangyan
bed load
transport rate
