南水北调与水利科技2017，Vol.15Issue(4)：203-208,6.DOI:10.13476/j.cnki.nsbdqk.2017.04.033
植被排列方式及坡度对坡面流Fr影响的试验研究
Impact of vegetation arrangement and slope gradient on the overland flow Froude number
摘要
Abstract
[Objective]To explore the impact of vegetation arrangement and slope gradient on the overland flow Froude number Fr,in order to reveal the inherent law of overland flow Froude number Fr.[Method]Using artificial simulation tests,we systematically studied the relationship between Fr and K value,which is the friction surface area of a unit floor area,under different conditions including six slope gradients and three angles between the vegetation arrangement direction and water flow direction.[Results]In non-submerged flow,with the increase of K ,Fr would decrease first and then tend to be steady,and the value of Fr would increase with the increase of slope gradient.Within a certain range of slope gradient,with the same gradient,when Fr>1,with the same K value,the bigger the direction angle,the smaller the Fr.when Fr<1,the situation was the other way around.With the same angle and the same K,the greater the gradient,the greater the corresponding Fr.[Conclusion]At a certain gradient,when the slope vegetation arrangement varies,the Froude number Fr value varies as well.The slope gradient is one of the important factors that influence Fr value range.关键词
弗劳德数/坡度/排列方式/摩阻表面积/走向角/植被/坡面流Key words
Froude number/slope gradient/arrangement mode/friction surface area/direction angle/vegetation/overland flow分类
建筑与水利引用本文复制引用
张景洲,张升堂,李红,王浩岚,刘元臣,王亨力..植被排列方式及坡度对坡面流Fr影响的试验研究[J].南水北调与水利科技,2017,15(4):203-208,6.基金项目
国家自然科学基金项目(40971021 （）
41471025) （）
山东省自然科学基金项目(ZR2014DM004) National Natural Science Foundation of China(40971021 （ZR2014DM004）
41471025) （）
Shandong Natural Science Foundation of China(ZR2014DM004) （ZR2014DM004）
