摘要
卵石的起动有其特殊性。本文针对卵石颗粒及其起动特点 ,考虑卵石颗粒形状的影响 ,引入形状系数及相对暴露度系数 ,从卵石的等效粒径出发 ,采用滚动起动模式 ,导出了卵石起动流速公式。并用天然河流实测资料和水槽试验实测资料进行了验证 ,符合较好。
Incipit of pebble has its particularity.Aiming at the grain of pebble and its incipient characteristic,considering the influence of pebble shape and the relative exposure degree,the formula of calculating the incipient velocity of pebbles is deduced based on the equivalent grain size of pebble and the rolling incipient mode.The validity of the formula is verified by observed data in rivers and experiment data in flume.
出处
《水力发电学报》
EI
CSCD
北大核心
2004年第3期112-115,共4页
Journal of Hydroelectric Engineering
基金
国家自然科学基金资助项目 (50 2 790 2 4 )
教育部博士点基金资助项目 (2 0 0 2 1 73)
关键词
河流泥沙工程学
泥沙起动
理论探讨
卵石
形状
相对暴露度
river sediment engineering
incipient velocity
theory research
pebble
shape
relative exposure degree
