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Runoff erosion processes on artificially constructed conically-shaped overburdened stockpiles with different gravel contents: Laboratory experiments with simulated rainfall
Luo, Han1,2; Rong, Yubo1; Lv, Jiaorong2; Xie, Yongsheng1,2
2019-04-01
Source PublicationCATENA
ISSN0341-8162
Volume175Pages:93-100
Corresponding AuthorLuo, Han(hanl@ms.iswc.ac.cn)
AbstractOverburdened stockpiles during construction projects are typically loose mixtures with different proportions of fines and gravel. They are common sources of anthropogenic accelerated erosion that threatens environmental quality and the quality of life for people in many parts of the world. Overburdened stockpiles have unique three-dimensional shapes. However, studies with these materials are usually performed in traditional planar soil bins. Therefore, in this study, a specially designed mobile experimental device was used to accurately evaluate the runoff erosion process on overburdened stockpiles in a three-dimensional conical shape. A series of indoor rainfall simulation experiments at 60 mm/h rainfall intensity was conducted using material with different gravel contents (0%, 10%, 20%, 30%, and 40%). The results showed that the runoff rate and flow velocity exhibited the same trend, i.e., a rapid increase, followed by a slow increase and then stabilization. The runoff regime in all experiments manifested as laminar and subcritical flow during the runoff process. Re and Fr values were much smaller than those on two-dimensional plane simulation of overburdened stockpiles. The presence of gravel caused the runoff to be slow and stable. Runoff rate, flow velocity, Re and Fr values all decreased with increasing gravel content. The sediment yield decreased logarithmically in response to the increasing gravel content. The study findings are not only helpful for understanding the hydraulic characteristics and erosion features that characterize overburdened stockpiles, but also have implications for prediction models of soil and water loss from this material during production and use in construction projects.
KeywordConical overburdened stockpiles Runoff Erosion process Gravel
DOI10.1016/j.catena.2018.12.010
WOS KeywordROCK FRAGMENT COVER ; SOIL-EROSION ; LAND-USE ; INFILTRATION ; GENERATION ; SEDIMENT ; SURFACES ; IMPACT ; SLOPE ; PLOTS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41601300] ; National Key Research and Development Program of China[2016YFC0503702] ; Fundamental Research Funds for the Central Universities[2452016107] ; West Light Foundation of The Chinese Academy of Sciences[XAB2015B06]
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China ; Fundamental Research Funds for the Central Universities ; West Light Foundation of The Chinese Academy of Sciences
WOS Research AreaGeology ; Agriculture ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS IDWOS:000459358500009
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/49416
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLuo, Han
Affiliation1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Luo, Han,Rong, Yubo,Lv, Jiaorong,et al. Runoff erosion processes on artificially constructed conically-shaped overburdened stockpiles with different gravel contents: Laboratory experiments with simulated rainfall[J]. CATENA,2019,175:93-100.
APA Luo, Han,Rong, Yubo,Lv, Jiaorong,&Xie, Yongsheng.(2019).Runoff erosion processes on artificially constructed conically-shaped overburdened stockpiles with different gravel contents: Laboratory experiments with simulated rainfall.CATENA,175,93-100.
MLA Luo, Han,et al."Runoff erosion processes on artificially constructed conically-shaped overburdened stockpiles with different gravel contents: Laboratory experiments with simulated rainfall".CATENA 175(2019):93-100.
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