摘要
水流挟沙力是反映河床处于冲淤平衡状态下水流挟带泥沙能力的综合性指标。按适用的含沙量范围,将挟沙力公式分为三类,按公式推导的方法又将其分成了四类。引用美国内布拉斯加洲劳布拉拉河河流实测资料对国外几家挟沙力公式进行验证,结果表明畅志达公式可靠性最强;又用黄河中下游实测资料对国内几家典型挟沙力公式进行验证,结果用张红武公式计算的结果与实测资料符合最好。
River sediment carrying capacity is a comprehensive index reflecting the sediment carrying capacity of flow under the conditions of equilibrium of scouring and deposition. According to applicable range of sedi ment concentration, the formula can be classified into three types and it also can be classified into four types if it is derived based on the formula. The formulas of foreign countries are verified by using the observed data of Laoburara River in Nebraska of the United States, showing Yang Zhida' s formula is the most reli able; then using observed data of the lower Yellow River to verify some typical Chinese sediment carrying capacity formulas, show Zhang Hongwu's formula is the most successful to tally with the observed data.
出处
《人民黄河》
CAS
北大核心
1993年第1期7-9,共3页
Yellow River
关键词
水流挟沙力
输沙率
含沙量
river sediment carrying capacity, sediment flux, sediment concentration
