新型方形薄壁生态护岸流速分布规律  

Velocity Distribution Law of the New Square Thin-wall Ecological Bank Protection

作　　者：谭顺钦 陈迪 TAN Shunqin;CHEN Di(National Engineering Research Center for Inland Waterway Regulation,Chongqing Jiaotong University, Chongqing 400074, China;Changjiang Institute of Survey, Planning, Design and Research, Wuhan 430010, China)

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074 [2]长江勘测规划设计研究院,湖北武汉430010

出　　处：《广东水利水电》2021年第5期62-66,共5页Guangdong Water Resources and Hydropower

基　　金：重庆市教委科技项目(编号:KJ1600511);长江勘测规划设计研究有限责任公司自主创新项目(编号:CX2018Z05)。

摘　　要：新水沙条件下长江中下游河道岸线发生普遍崩塌,生态护岸以其独到的“亲水”防护获得了越来越多的关注,现有研究中对护岸块体水流特性的成果较少。通过水槽概化模型实验对新型方形薄壁生态护岸展开研究,对比分析在不同开孔率的影响下岸坡附近流速分布的规律。结果表明:相对于没有铺设护岸块体的天然岸坡,在一定的水流条件下新型生态护岸能够显著改变断面流速分布,对改善水流流态、防止河岸过度冲刷以及改善生态环境等都具有积极作用。Under the conditions of new water and sand,the river banks in the middle and lower reaches of the Yangtze River generally collapsed.Ecological revetments have attracted more and more attention due to their unique"hydrophilic"protection.Existing research has made more achievements on the flow characteristics of revetments less.Research on the new square thin-walled ecological bank protection is carried out through the flume generalized model experiment,and the law of velocity distribution near the bank slope under the influence of different opening rates is comparatively analyzed.The results show that compared with the natural bank slope without the bank protection block,the new ecological bank protection can significantly change the velocity distribution of the section under certain water flow conditions,and has a positive effect on improving the flow pattern of the water flow,preventing excessive erosion of the river bank,and improving the ecological environment.

关 键 词：生态护岸 开孔率 流速分布 

分 类 号：TV861[水利工程—水利水电工程]