Effects of segregation in binary granular mixture avalanches down inclined chutes impinging on defending structures
文献类型：期刊论文
| 作者 | Bi, Yuzhang1,2,3,4; He, Siming1,2,4 ; Li, Xinpo1,2; Ouyang, Chaojun1,2; Wu, Yong1,2
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| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 75期号:3页码:DOI:10.1007/s12665-015-5076-1 |
| 关键词 | Granular avalanches Discrete element method Segregation Retaining wall Impact force |
| ISSN号 | 1866-6280 |
| 通讯作者 | He, Siming |
| 英文摘要 | This 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 关键词[WOS] | DEBRIS FLOWS ; PARTICLES ; MODEL ; SIMULATION ; FINE ; DEM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000370241400085 |
| 公开日期 | 2016-04-26 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/15116]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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