A Study of Rainfall-Runoff Movement Process on High and Steep Slopes Affected by Double Turbulence Sources
文献类型：期刊论文
| 作者 | Li, Xinghua1; Gao, Jianen1,2,3,4; Guo, Zihao3; Yin, Yan2; Zhang, Xingchen3; Sun, Pengcheng2; Gao, Zhe1 |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2020-06-02 |
| 卷号 | 10期号:1页码:13 |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-020-66060-3 |
| 通讯作者 | Gao, Jianen(gaojianen@126.com) |
| 英文摘要 | To increase the available land area, a large-scale land remediation campaign was carried out in the loess hilly and gully area. A large number of high and steep slopes have been produced in the construction of road engineering and water conservancy engineering, and these slopes will cause serious soil erosion under rainfall conditions. Because rainfall runoff is simultaneously affected by slope, bed surface and rainfall, the runoff movement characteristics are complex. It is difficult to consider all influencing factors in the existing models, especially for steep slopes. In this study, artificial rainfall experiments were conducted to study the rainfall-runoff hydraulic processes under different rainfall intensities and slope gradients, and a modified method was proposed to model the key hydraulic parameters (i.e., equilibrium time, water surface line, and runoff processes) on steep slopes. The results showed that (1) For steep slopes (a 70 degrees slope compared to a 5 degrees slope), the runoff generation time, confluence time and equilibrium time of the slope decreased significantly. At the same time, the single width runoff of the steep slope had a power function relationship with the rainfall intensity and gradient. (2) The runoff patterns of steep slopes were different from those on gentle slopes and runoff patterns were more likely to change. The Reynolds number and Froude number for slope flow changed slowly when the slope was less than the critical gradient and increased significantly when the slope exceeded the critical gradient. (3) Based on the analysis of the "double turbulent model theory of thin-layer flow on a high-steep slope", combined with the dispersed motion wave model, a modified method for calculating the hydrodynamic factors of rainfall runoff was proposed. Then, this method was verified with indoor and outdoor experiments. The research results not only have theoretical significance, but also provide a more accurate calculation method for the design of high and steep slopes involved in land treatment engineering, road engineering and water conservancy engineering. |
| WOS关键词 | LOESS PLATEAU ; FLOW |
| 资助项目 | National Key R&D Program of China[2017YFC0504703] ; National Natural Science Foundation of China[41877078] ; National Natural Science Foundation of China[41371276] ; Innovation Engineering Important Direction Project in Institute of Water and Soil Conservation, Chinese Academy of Sciences, China[A315021615] ; Basic Research Program in Natural Sciences of Shaanxi Province, China[2016ZDJC-20] ; ShaanXi Province Science and Technology Innovation Project[2013KTDZ03-03-01] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000560799500012 |
| 出版者 | NATURE PUBLISHING GROUP |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Innovation Engineering Important Direction Project in Institute of Water and Soil Conservation, Chinese Academy of Sciences, China ; Basic Research Program in Natural Sciences of Shaanxi Province, China ; ShaanXi Province Science and Technology Innovation Project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/157966]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Jianen |
| 作者单位 | 1.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Minist Water Resources, Res Ctr Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xinghua,Gao, Jianen,Guo, Zihao,et al. A Study of Rainfall-Runoff Movement Process on High and Steep Slopes Affected by Double Turbulence Sources[J]. SCIENTIFIC REPORTS,2020,10(1):13. |
| APA | Li, Xinghua.,Gao, Jianen.,Guo, Zihao.,Yin, Yan.,Zhang, Xingchen.,...&Gao, Zhe.(2020).A Study of Rainfall-Runoff Movement Process on High and Steep Slopes Affected by Double Turbulence Sources.SCIENTIFIC REPORTS,10(1),13. |
| MLA | Li, Xinghua,et al."A Study of Rainfall-Runoff Movement Process on High and Steep Slopes Affected by Double Turbulence Sources".SCIENTIFIC REPORTS 10.1(2020):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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