Sediment transport capacity of concentrated flows on steep loessial slope with erodible beds

Abstract Previous research on sediment transport capacity has been inadequate and incomplete in describing the detachment and transport process of concentrated flows on slope farmlands during rill development. An indoor concentrated flow scouring experiment was carried out on steep loessial soil slo...

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Autores principales:	Hai Xiao, Gang Liu, Puling Liu, Fenli Zheng, Jiaqiong Zhang, Feinan Hu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/63252b43d4ea47098b23b72a0b830e24
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spelling	oai:doaj.org-article:63252b43d4ea47098b23b72a0b830e242021-12-02T16:06:49ZSediment transport capacity of concentrated flows on steep loessial slope with erodible beds10.1038/s41598-017-02565-82045-2322https://doaj.org/article/63252b43d4ea47098b23b72a0b830e242017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02565-8https://doaj.org/toc/2045-2322Abstract Previous research on sediment transport capacity has been inadequate and incomplete in describing the detachment and transport process of concentrated flows on slope farmlands during rill development. An indoor concentrated flow scouring experiment was carried out on steep loessial soil slope with erodible bed to investigate the sediment transport capacity under different flow rates and slope gradients. The results indicated that the sediment transport capacity increases with increasing flow rate and slope gradient, and these relationships can be described by power functions and exponential functions, respectively. Multivariate, nonlinear regression analysis showed that sediment transport capacity was more sensitive to slope gradient than to flow rate, and it was more sensitive to unit discharge per unit width than to slope gradient for sediment transport capacity in this study. When similar soil was used, the results were similar to those of previous research conducted under both erodible and non-erodible bed conditions. However, the equation derived from previous research under non-erodible bed conditions with for river bed sand tends to overestimate sediment transport capacity in our experiment.Hai XiaoGang LiuPuling LiuFenli ZhengJiaqiong ZhangFeinan HuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hai Xiao Gang Liu Puling Liu Fenli Zheng Jiaqiong Zhang Feinan Hu Sediment transport capacity of concentrated flows on steep loessial slope with erodible beds
description	Abstract Previous research on sediment transport capacity has been inadequate and incomplete in describing the detachment and transport process of concentrated flows on slope farmlands during rill development. An indoor concentrated flow scouring experiment was carried out on steep loessial soil slope with erodible bed to investigate the sediment transport capacity under different flow rates and slope gradients. The results indicated that the sediment transport capacity increases with increasing flow rate and slope gradient, and these relationships can be described by power functions and exponential functions, respectively. Multivariate, nonlinear regression analysis showed that sediment transport capacity was more sensitive to slope gradient than to flow rate, and it was more sensitive to unit discharge per unit width than to slope gradient for sediment transport capacity in this study. When similar soil was used, the results were similar to those of previous research conducted under both erodible and non-erodible bed conditions. However, the equation derived from previous research under non-erodible bed conditions with for river bed sand tends to overestimate sediment transport capacity in our experiment.
format	article
author	Hai Xiao Gang Liu Puling Liu Fenli Zheng Jiaqiong Zhang Feinan Hu
author_facet	Hai Xiao Gang Liu Puling Liu Fenli Zheng Jiaqiong Zhang Feinan Hu
author_sort	Hai Xiao
title	Sediment transport capacity of concentrated flows on steep loessial slope with erodible beds
title_short	Sediment transport capacity of concentrated flows on steep loessial slope with erodible beds
title_full	Sediment transport capacity of concentrated flows on steep loessial slope with erodible beds
title_fullStr	Sediment transport capacity of concentrated flows on steep loessial slope with erodible beds
title_full_unstemmed	Sediment transport capacity of concentrated flows on steep loessial slope with erodible beds
title_sort	sediment transport capacity of concentrated flows on steep loessial slope with erodible beds
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/63252b43d4ea47098b23b72a0b830e24
work_keys_str_mv	AT haixiao sedimenttransportcapacityofconcentratedflowsonsteeploessialslopewitherodiblebeds AT gangliu sedimenttransportcapacityofconcentratedflowsonsteeploessialslopewitherodiblebeds AT pulingliu sedimenttransportcapacityofconcentratedflowsonsteeploessialslopewitherodiblebeds AT fenlizheng sedimenttransportcapacityofconcentratedflowsonsteeploessialslopewitherodiblebeds AT jiaqiongzhang sedimenttransportcapacityofconcentratedflowsonsteeploessialslopewitherodiblebeds AT feinanhu sedimenttransportcapacityofconcentratedflowsonsteeploessialslopewitherodiblebeds
_version_	1718384844664209408

Sediment transport capacity of concentrated flows on steep loessial slope with erodible beds

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