泥沙起动流速研究现状分析  

Current Research of sediment Incipient Motion Velocity

作　　者：王琤浩[1] 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《科技创新导报》2014年第27期32-36,共5页Science and Technology Innovation Herald

基　　金：三峡大学科技创新基金

摘　　要：该文通过回顾泥沙起动的随机性、运动判别标准、以及泥沙颗粒在河床面的受力分析研究,简要综述了粗颗粒散体泥沙、均匀沙散粒体及细颗粒粘性泥沙、非均匀沙、砾石和卵石以及斜坡上泥沙起动流速的一些主流研究成果,并将最近的一些研究成果与经典研究进行对比。虽然泥沙起动流速研究由国外学者奠基,但在后续的理论体系完善中我国学者也进行了较为深入的研究工作并得到许多实用的经验和半经验公式。粗颗粒散体泥沙的起动流速、均匀沙散粒体及细颗粒粘性泥沙的起动流速研究较为透彻,非均匀沙和砾石和卵石的起动机理,以及斜坡上的泥沙起动流速仍有很大发展空间,对于规律性较为不明显的起动流速研究将会成为今后研究的热点方向。The randomness of sediment incipient motion with its criteria and the force analysis of bed sediment particles were reviewed. The incipient motion of coarse and fine sediments, uniform and non-uniform sediments, gravel and pebbles, also the velocity with slope were also analyzed here in order to compare the current Research with the classical formulas. Though the Researches of incipient motion were come up by scholars aboard, many empirical and semi-empirical formulas were put forward by Chinese scholars during the perfecting process of this academic system. The Researches thorough relatively,, while gravel and pebbles, and the velocity may become a research hotspot in The future. of coarse and fine sediments, uniform and non-uniform sediments were with slope need more intensive study. Irregular sediment incipient motion

关 键 词：泥沙研究 起动流速 判别标准 现状分析 

分 类 号：TV142[水利工程—水力学及河流动力学]