透水丁坝纵向流速分布试验研究  

Experimental Study on Longitudinal Velocity Distribution of Pervious Groins

作　　者：贠宝革 YUN Baoge(Hohai College of Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学河海学院,重庆400074

出　　处：《广东水利水电》2021年第1期55-62,共8页Guangdong Water Resources and Hydropower

基　　金：国家重点研发计划资助项目(编号:2016YF0402106-04);重庆市教委科技项目(编号:KJ1600511);重庆市前沿与应用基础研究计划项目(编号:cstc2015jcyjA30004)。

摘　　要：通过水槽概化模型试验研究不同淹没程度、不同空隙率和不同空隙尺寸条件下,对丁坝上游回流区、下游回流区和主流区纵向流速的影响规律。结果表明:淹没程度、空隙率、空隙尺寸和纵向流速具有较强的相关性,回流区纵向流速随淹没程度的增大而增大,主流区随淹没程度增大而减小;空隙率和空隙尺寸具有相似的变化规律。可为长江上游散抛石丁坝的维修加固提供参考。The generalized model test of the flume is used to study the conditions of different submergence degrees,different porosities and different void sizes.The influence law of longitudinal flow velocity was in the zone.The results show that:submergence degree,porosity,void size and longitudinal flow velocity have a strong correlation.The longitudinal flow velocity in the return area increases with the increase of the submergence degree,and the mainstream area decreases with the increase of the submergence degree;the size has a similar change pattern.The research results can provide a reference for the maintenance and reinforcement of the scattered stone dam in the upper Yangtze River.

关 键 词：纵向流速 淹没程度 空隙率 空隙尺寸 回流区 主流区 

分 类 号：U617.9.1[交通运输工程—船舶及航道工程]