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Effects of segregation in binary granular mixture avalanches down inclined chutes impinging on defending structures
Bi, Yuzhang1,2,3,4; He, Siming1,2,4; Li, Xinpo1,2; Ouyang, Chaojun1,2; Wu, Yong1,2
Corresponding AuthorHe, Siming
2016
Source PublicationENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
EISSN1866-6299
Volume75Issue:3Pages:DOI:10.1007/s12665-015-5076-1
SubtypeArticle
AbstractThis study investigates the segregation processes and impact response of binary granular mixtures with identical densities but different sizes particles subjected to gravity. Deposition was compared using discrete element method (DEM) numerical experiment and laboratory experiment to determine the material parameters in the particle flow code in three dimensions (PFC3D). With proper material parameters, many numerical experiments were performed on an idealized binary granular mixture avalanche to reveal its kinetic properties, with a particular focus on the results of the final run-out distance, fluid velocity, and impact force exerted on defending structures. The simulation results show that the energy dissipation in granular avalanches is higher with uniform particle sizes than with mixed particle sizes, indicating lesser energy dissipation in segregation processes. Coarse particles also play an important role in determining the kinetic properties of binary granular mixture avalanches; specifically, they obviously affect the maximum impact force when the storage area length is small. On the other hand, fine particles play an important role when the storage area length is large. These results suggest that the effects of coarse particles in granular avalanches containing more than one particle size may be at least as important.
KeywordGranular Avalanches Discrete Element Method Segregation Retaining Wall Impact Force
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s12665-015-5076-1
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Geology ; Water Resources
Indexed BySCI
WOS KeywordDEBRIS FLOWS ; PARTICLES ; MODEL ; SIMULATION ; FINE ; DEM
Language英语
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000370241400085
Funding OrganizationNational Key Basic Research Program of China(2013CB733201) ; National Natural Science Foundation of China(41272346 ; Sci&Tec Research Project from the Second Railways Survey and Design Institute of the China Ministry of Railway(13164196(13-15)) ; 41472293 ; 41202258 ; 91430105)
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Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/15116
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China
2.Chinese Acad Sci, IMHE, 9 Block 4,Renminnanlu Rd, Chengdu, Peoples R China
3.Fuzhou Univ, Coll Zijin Min, Fuzhou 350002, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Bi, Yuzhang,He, Siming,Li, Xinpo,et al. Effects of segregation in binary granular mixture avalanches down inclined chutes impinging on defending structures[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(3):DOI:10.1007/s12665-015-5076-1.
APA Bi, Yuzhang,He, Siming,Li, Xinpo,Ouyang, Chaojun,&Wu, Yong.(2016).Effects of segregation in binary granular mixture avalanches down inclined chutes impinging on defending structures.ENVIRONMENTAL EARTH SCIENCES,75(3),DOI:10.1007/s12665-015-5076-1.
MLA Bi, Yuzhang,et al."Effects of segregation in binary granular mixture avalanches down inclined chutes impinging on defending structures".ENVIRONMENTAL EARTH SCIENCES 75.3(2016):DOI:10.1007/s12665-015-5076-1.
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