水利学报2017，Vol.48Issue(11)：1334-1340,7.DOI:10.13243/j.cnki.slxb.20170496
黄丘区坡面细沟流速分布特征试验研究
Experimental study of the velocity profile of rill in the loess region
摘要
Abstract
The flow velocity distribution under the condition of steep slope (20°) is studied by using the method of indoor fine simulated rainfall experiment.Through the observation and analysis of the rill morphology evolution and the overland flow velocity during the experiment,the variation rule of the flow velocity during the rill formation and development was studied.The results show that the overland flow velocity between the rills is not affected by the degree of rill development,but there is a relationship between the flow velocity within the rill and the rill development.First,the emergence of the rill will lead to an increase of runoff in the rill,but with the rill development,the confluence area decreases,the rill bed morphological resistance increases,resulting in the gradual decrease of the rill flow velocity.The reciprocal contrast between the rill bed morphological resistance and the flow velocity increment caused by runoff concentration affects the flow velocity in the rill.关键词
黄土坡面/细沟侵蚀/形态演变/坡面流速Key words
loess slope/rill erosion/morphology evolution/overland flow velocity分类
农业科技引用本文复制引用
张攀,姚文艺,魏鹳举,肖培青..黄丘区坡面细沟流速分布特征试验研究[J].水利学报,2017,48(11):1334-1340,7.基金项目
国家自然科学基金项目(51409110),河南省创新型科技人才队伍建设工程(162101510004) （51409110）
