灌溉排水学报2017，Vol.36Issue(2)：101-105,5.DOI:10.13522/j.cnki.ggps.2017.02.016
不同黑麦草种植密度对坡面流的阻力特性影响研究
Study on Resistance Characteristics for Overland flow
under Different Density of Flexible Vegetation Cover
赵璐 1孙菊英 1张璐 1潘雪倩 1雷孝章1
作者信息
- 1. 四川大学水力学与山区河流开发保护国家重点实验室,成都610065
- 折叠
摘要
Abstract
Based on the method of integrating theoretical analysis with experiment,a series of overland flow experiments were carried out to study the influence of three different coverage and two slope groups of the perennial ryegrass on resistance characteristics of overland flow.The interaction between the form of flexible vegetation and flow was primarily discussed under certain conditions.The experiment results showed that Manning coefficient increased and then decreased and increased finally as the Reynolds number increased with surface coverage of vegetation;Manning coefficient did not increase as vegetation density increased;when the slop was 5°,Manning coefficient decreased with Froude number by good power function,but 10°did not.With the same Froude number,Manning coefficient decreased with the slope increases.关键词
坡面流/植被密度/阻力特性/糙率系数Key words
overland flow/the density of vegetation/resistance characteristics/Manning coefficient分类
农业科技引用本文复制引用
赵璐,孙菊英,张璐,潘雪倩,雷孝章..不同黑麦草种植密度对坡面流的阻力特性影响研究[J].灌溉排水学报,2017,36(2):101-105,5.
