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Effects of Simulated Gravel on Hydraulic Characteristics of Overland Flow Under Varying Flow Discharges, Slope Gradients and Gravel Coverage Degrees | |
Liu, Xiaona; Fan, Dengxing; Yu, Xinxiao; Liu, Ziqiang1; Sun, Jiamei2 | |
2019 | |
发表期刊 | SCIENTIFIC REPORTS |
ISSN | 2045-2322 |
卷号 | 9 |
摘要 | To quantify the hydraulic characteristics of overland flow on gravel-covered slopes, eight flow discharges (Q) (8.44-122 L/min), five slope gradients (J) (2 degrees-10 degrees) and four gravel coverage degrees (Cr) (0-30%) were examined via a laboratory flume. The results showed that (1) gravel changed flow regime. Gravel increased the Reynolds number (Re) by 2.94-33.03%. Re were less affected by J and positively correlated with Cr and Q. Gravel decreased the Froude number (Fr) by 6.83-77.31%. Fr was positively correlated with Q and J and negatively correlated with Cr. (2) Gravel delayed the flow velocity (U) and increased the flow depth (h) and flow resistance (f). Gravel reduced U by 1.20-58.95%. U was positively correlated with Q and J and negatively correlated with Cr. Gravel increased h by 0.12-2.41 times. h was positively correlated with Q and Cr and negatively correlated with J. Gravel increased f by 0.15-18.42 times. f were less affected by J, positively correlated with Cr and negatively correlated with Q. (3) The relationships between hydraulic parameters and Q, J and Cr identified good power functions. Hydraulic parameters were mainly affected by Cr. These results can guide the ecological construction of soil and water conservation. |
学科领域 | Multidisciplinary Sciences |
DOI | 10.1038/s41598-019-56223-2 |
收录类别 | SCI |
语种 | 英语 |
WOS关键词 | ROCK FRAGMENT COVER ; SEMIARID LOESS REGION ; SOIL-EROSION ; RAINFALL INTENSITY ; ROUGHNESS COEFFICIENTS ; SEDIMENT TRANSPORT ; SOLUTE TRANSPORT ; INTERRILL RUNOFF ; RILL HYDRAULICS ; SHEAR-STRESS |
WOS研究方向 | Science & Technology - Other Topics |
WOS记录号 | WOS:000508919400001 |
出版者 | NATURE PUBLISHING GROUP |
文献子类 | Article |
出版地 | LONDON |
资助机构 | Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [2015ZCQ-SB-01, 2019ZY36] ; National Natural Science Foundation, P.R. ChinaNational Natural Science Foundation of China (NSFC) [41501292] ; National Key Research and Development Program Project Desertification Land Control and Sand Industry Technology Development and Demonstration in Bashang Plateau and Northern North China Mountains [2016YFC0500802] ; Beijing Municipal Education CommissionBeijing Municipal Commission of Education [PXM2018_014207_000024] |
作者邮箱 | fandengxing111@sina.com ; yuxinxiao234@126.com |
作品OA属性 | gold, Green Published |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/19719 |
专题 | 植被与环境变化国家重点实验室 |
作者单位 | 1.Beijing Forestry Univ, Key Lab Soil & Water Conservat & Desertificat Com, State Forestry Adm, Beijing 100083, Peoples R China 2.Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China 3.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Xiaona,Fan, Dengxing,Yu, Xinxiao,et al. Effects of Simulated Gravel on Hydraulic Characteristics of Overland Flow Under Varying Flow Discharges, Slope Gradients and Gravel Coverage Degrees[J]. SCIENTIFIC REPORTS,2019,9. |
APA | Liu, Xiaona,Fan, Dengxing,Yu, Xinxiao,Liu, Ziqiang,&Sun, Jiamei.(2019).Effects of Simulated Gravel on Hydraulic Characteristics of Overland Flow Under Varying Flow Discharges, Slope Gradients and Gravel Coverage Degrees.SCIENTIFIC REPORTS,9. |
MLA | Liu, Xiaona,et al."Effects of Simulated Gravel on Hydraulic Characteristics of Overland Flow Under Varying Flow Discharges, Slope Gradients and Gravel Coverage Degrees".SCIENTIFIC REPORTS 9(2019). |
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