A new theoretical method for analyzing confined dry granular flows
文献类型：期刊论文
| 作者 | Zhou, Gordon G. D.1,2,3 ; Ng, Charles W. W.4; Sun, Q. C.5
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| 刊名 | LANDSLIDES
 |
| 出版日期 | 2014-06-01 |
| 卷号 | 11期号:3页码:369-384 |
| ISSN号 | 1612-510X |
| 关键词 | Theoretical solution Confined granular flow Modified Savage-Hutter model Contact friction law |
| 通讯作者 | 周公旦 |
| 英文摘要 | A granular body may deform in a continuous fashion such that the solid particles remain in close contact. Previous research works have always used the frictional Coulomb-like continuum treatment for analyzing granular bodies. However, this approach is only applicable for quasi-static conditions and cannot capture the complicated granular contact behavior of solid particles inside a failing granular body. This paper applies a revised Savage-Hutter equation to model granular flows moving down a confined, sloping channel. The Coulomb contact friction law is modified to consider the effect of the shear rate inside a granular body. This new method also considers the confinement effect of a sloping channel on granular flow mobility. The derived depth-averaged equations of motion bear a resemblance to nonlinear shallow-water wave equations. Results computed using the derived equations are compared with measurements from flume model tests, and consistency is found between the two. |
| 学科主题 | 灾害学 |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Engineering, Geological ; Geosciences, Multidisciplinary |
| 研究领域[WOS] | Engineering ; Geology |
| 关键词[WOS] | DEBRIS FLOWS ; 3-DIMENSIONAL TERRAIN ; INCLINED PLANE ; AVALANCHES ; RUNOUT ; MOTION ; MODEL ; SEGREGATION ; LANDSLIDES ; TOPOGRAPHY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000337061000004 |
| 公开日期 | 2013-11-26 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/6543]  |
| 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, Inst Mt Hazards & Environm, Chengdu, Peoples R China 3.Minist Water Conservancy & Power, Chengdu, Peoples R China 4.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China 5.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Gordon G. D.,Ng, Charles W. W.,Sun, Q. C.. A new theoretical method for analyzing confined dry granular flows[J]. LANDSLIDES,2014,11(3):369-384. |
| APA | Zhou, Gordon G. D.,Ng, Charles W. W.,&Sun, Q. C..(2014).A new theoretical method for analyzing confined dry granular flows.LANDSLIDES,11(3),369-384. |
| MLA | Zhou, Gordon G. D.,et al."A new theoretical method for analyzing confined dry granular flows".LANDSLIDES 11.3(2014):369-384. |
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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