华中科技大学学报（自然科学版）2016，Vol.44Issue(4)：111-115,5.DOI:10.13245/j.hust.160422
柔性淹没植被对生态河道洪水波影响研究
Study on influence of submerged flexible vegetation on propagation of flood waves in ecological river
摘要
Abstract
To study the problem of flow resistance generated in ecological river ,relationship between the Manning′s n‐value and depth‐averaged velocity ,water depth as well as vegetation density was ana‐lyzed ,and then a derived Manning′s equation associated with flow condition and vegetation attribute was proposed .By solving classic Saint‐Venant Equations ,the impact of submerged flexible vegetation on flood waves was analyzed from discharge ,water level ,and depth‐averaged velocity .Results dem‐onstrate that although the presence of vegetation increases the bed roughness ,the influence of vegeta‐tion on flow resistance will be reduced when increasing water level and flow velocity .From another point of view ,the impact of vegetation roughness on flood wave shows that when increasing flow roughness ,flow rate and velocity will decrease while water level increases .关键词
明渠流动/柔性淹没植被/水流阻力/糙率/洪水波Key words
channel flow/submerged flexible vegetation/flow resistance/channel roughness/flood w aves分类
建筑与水利引用本文复制引用
槐文信,唐雪,王伟杰..柔性淹没植被对生态河道洪水波影响研究[J].华中科技大学学报（自然科学版）,2016,44(4):111-115,5.基金项目
国家自然科学基金资助项目（51439007，11172218，11372232）；高等学校博士学科点专项科研基金资助项目（20130141110016）． （）
