潮动力影响下辐射沙脊群的研究进展  

Advancement in impacts of tidal dynamics on radial sand ridges

作　　者：陈橙[1] 王义刚[1] 黄惠明[1] 袁春光[1] 

机构地区：[1]河海大学海岸灾害及防护教育部重点实验室,江苏南京210098

出　　处：《水运工程》2013年第8期17-24,共8页Port & Waterway Engineering

基　　金：国家科技支撑计划(2012BAB03B01);江苏省自然科学基金青年基金(BK2012411)

摘　　要：从形态、形成时间、生成机制、粒径分布和物质来源、沙洲演变和水道稳定性等方面简述潮动力影响下辐射沙脊群的研究进展。上千年前因泥沙进入辐射状潮流场而形成了体积庞大、呈辐射状分布的沙脊群。在复杂的潮动力作用下,辐射沙脊群呈现外部冲刷、中心淤积,各潮汐汊道趋于稳定的演化特点。提出今后可以将地质研究和水动力研究相结合,在潮流场模拟中加入泥沙模块,运用长周期数值模拟技术重现辐射沙脊群形成和演变的全过程,以弥补现有研究的诸多不足。This paper reviews the advancement in impacts of tidal dynamics on radial sand ridges（RSR）,including its morphology,development time,formation mechanism,particle size distribution,material sources,sandbank evolution and stability of tidal inlet.Thousands of years ago,huge and radialized RSR was formed because sediment entered the radial tidal current field.Under the effect of tidal dynamics,fringe of RSR was eroded,center of RSR was deposited,and the tidal inlet tends to be stable.This paper proposes that the sediment module can be added in the tidal flow simulation,and long-term model can be applied to reproduce the whole process of formation and evolution of the RSR in order to compensate for many inadequacies of existing research.

关 键 词：辐射沙脊群 潮动力 形成 演变 研究进展 

分 类 号：TV143[水利工程—水力学及河流动力学]