弯曲河道水流泥沙运动研究进

doi:10.3969/j.issn.1674-0696.2021.06.11

摘要/Abstract

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。

关键词: 水利工程, 弯曲河流, 水沙运动, 弯道环流, 横向输沙

Abstract: 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.

Key words: hydraulic engineering, curved river, flow and sediment movement, circulating flow in bend, transverse transport of sediment

中图分类号:

TV147

姚仕明1，赵占超2，渠庚1，庄灵光3. 弯曲河道水流泥沙运动研究进[J]. 重庆交通大学学报（自然科学版）, 2021, 40(06): 73-79.

YAO Shiming1, ZHAO Zhanchao2, QU Geng1, ZHUANG Lingguang3. Research Progress of Flow and Sediment Movement in Curved Channel[J]. Journal of Chongqing Jiaotong University(Natural Science), 2021, 40(06): 73-79.

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