摘要
弯曲河道的水沙运动一直是河流研究者十分关注的课题之一,关系到河道演变与治理。重点概述了单一弯道与连续弯道水沙运动国内外研究进展,梳理了弯曲河道的水面比降、纵横向流速分布、悬移质泥沙及推移质泥沙的运动特性。分析结果表明:以往研究大多是基于相对平衡的水沙条件与尺度相对较小的自然河流情况下取得的成果,针对水沙过程发生较大变化尤其是来沙大幅度减少的大尺度河流的弯曲河道水沙运动规律研究较少,限制了对减沙条件下大尺度弯曲河道演变规律的深入认识。因此,需要在前人研究基础上开展变化环境下弯曲河道水沙运动特性的研究,为进一步深入研究弯道演变规律与治理提供基础。
Flow and sediment movement in curved channel has always been one of the topics that river researchers pay close attention to,which is related to the river evolution and management.The research progress of flow and sediment movement in single bend and continuous bend at home and abroad was mainly summarized.The water surface gradient,vertical and horizontal velocity distribution,the movement characteristics of suspended sediment and bed load sediment in the curved channel were analyzed.It was considered that most of the previous studies were based on the results obtained under the condition of relatively balanced water and sediment conditions and relatively small-scale natural rivers.However,in view of the great changes in the flow and sediment processes,especially the bend channels in large-scale rivers where the incoming sediment was greatly reduced,there were few studies on the laws of flow and sediment movement,which limited the in-depth understanding of the evolution law of the large-scale bend river under the condition of sediment reduction.Therefore,it is necessary to carry out the research on the characteristics of flow and sediment movement in curved channels under changing environment on the basis of previous studies,so as to provide a basis for further study on the evolution law and governance of the curved channel.
作者
姚仕明
赵占超
渠庚
庄灵光
YAO Shiming;ZHAO Zhanchao;QU Geng;ZHUANG Lingguang(Yangtze River Scientific Research Institute,Wuhan 430010,Hubei,China;Yellow River Instituteof Hydraulic Research,Zhengzhou 450003,Henan,China;School of River&Ocean,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《重庆交通大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第6期73-79,共7页
Journal of Chongqing Jiaotong University(Natural Science)
基金
国家自然科学基金资助项目(51759015
51679011)。
关键词
水利工程
弯曲河流
水沙运动
弯道环流
横向输沙
hydraulic engineering
curved river
flow and sediment movement
circulating flow in bend
transverse transport of sediment
作者简介
第一作者:姚仕明(1974-),男,安徽庐江人,教授级高工,博士,主要从事江湖演变与治理保护方面的研究。E-mail:yzhshymq@163.com;通信作者:赵占超(1990-),男,河南叶县人,助理工程师,硕士,主要从事河床演变方面的研究。E-mail:294826883@qq.com。
