Measuring sediment transport capacity in ephemeral gully through adjustment of sediment feeding
Huang, Yuhan1,2; Zhuang, Xiaohui3; Wang, Wei4; Lei, Tingwu1,5; Liu, Zhiqiang1; Zhang, Qingwen6; Dong, Yuequn7; Ji, Hongyi4
Source PublicationCATENA
Corresponding AuthorWang, Wei(weiwang@cau.edu.cn)
AbstractSediment transport capacity (STC) is an important parameter for quantifying the erosion process in ephemeral gully. It is not practical to build a flume long enough to measure the STC in ephemeral gully through traditional soil erosion. Therefore, a methodology and a criteria were proposed to adjust the sediment feeding by regulating the length of main sediment supply section to achieve measurement of STC in ephemeral gully. The STC measurements were conducted under slope gradients of 5 degrees, 10 degrees, 15 degrees, and 20 degrees and unit-width flow rates of 5.33, 10.67, 21.33 and 42.67 m(3) s(-1) m(-1). The measured STC in ephemeral gullies ranged from 1.19 to 38.29 kg s(-1) m(-1) with high accuracy. Also, the measured STCs were positively and well correlated with unit-width flow rate and slope gradient. According to the values of Reynolds number and Froude number, the water flow in experimental ephemeral gully can be categorized as a turbulent and supercritical flow. A multivariate non-linear model was developed to predict the STC with slope gradients and unit-width flow rates, which performed well under experimental hydraulic conditions. The proposed methodology and measuring setup provide a new and reliable approach for measuring STC in ephemeral gully.
KeywordMethodology Sediment transport capacity Ephemeral gully Unit-width flow rate Slope gradient
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[41571257]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000643594100030
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWang, Wei
Affiliation1.China Agr Univ, Coll Water Resources & Civil Engn, Beijing 100083, Peoples R China
2.Guangxi Univ, Coll Forestry, Guangxi Key Lab Forest Ecol & Conservat, Nanning 530004, Peoples R China
3.Tianjin Agr Univ, Coll Water Conservancy Engn, Tianjin 300384, Peoples R China
4.China Agr Univ, Coll Engn, Beijing 100083, Peoples R China
5.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
6.CAAS, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China
7.Beijing Enterprises Water Grp Ltd, Beijing 100102, Peoples R China
Recommended Citation
GB/T 7714
Huang, Yuhan,Zhuang, Xiaohui,Wang, Wei,et al. Measuring sediment transport capacity in ephemeral gully through adjustment of sediment feeding[J]. CATENA,2021,202:9.
APA Huang, Yuhan.,Zhuang, Xiaohui.,Wang, Wei.,Lei, Tingwu.,Liu, Zhiqiang.,...&Ji, Hongyi.(2021).Measuring sediment transport capacity in ephemeral gully through adjustment of sediment feeding.CATENA,202,9.
MLA Huang, Yuhan,et al."Measuring sediment transport capacity in ephemeral gully through adjustment of sediment feeding".CATENA 202(2021):9.
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