摘要
本文以灌区实测水沙资料为基础，通过分析悬沙垂线分布，提出泥沙输送的条件，进一步分析不同粒径组泥沙的输移特性及对渠道泥沙淤积的影响。指出粗沙是造成泥沙淤积的关键，阐述不同粒径组泥沙都具有多来多排的特性，但其变化规律有所差异。通过比较多个挟沙能力公式，最后给出适应簸箕李灌区挟沙能力的具体表达式。
Based on field data, conditions for sediment transport in irrigation canals are given by analyzing vertical profiles of sediment concentrations. Transport characteristics of sediment with different grain sizes and their effects on deposition are further analized. It is pointed out that the deposition in canals is mainly caused by coarse particles(>0 05mm). Several formulas for sediment transport capacity are compared, and finally a formula suitable for Bojili Irrigation District is suggested
出处
《泥沙研究》
CSCD
北大核心
1998年第1期67-73,共7页
Journal of Sediment Research
基金
八.五攻关项目
