IMHE OpenIR  > 山地灾害与地表过程重点实验室
Study of Solids Contact Shearing and Collisions in Granular Debris Flows
Language英语
Gordon G. D. Zhou1,2; Q. C. Sun3; M. L. Fei3
2013
Source PublicationPOWDERS AND GRAINS 2013 (AIP Conference Proceedings Vol. 1542)
Author of SourceYu A ; Dong K ; Yang R ; Luding S
Pages654-657
meeting7th International Conference on Micromechanics of Granular Media (Powders and Grains)
Conference DateJUL 08-12, 2013
Conference PlaceSydney
CountryAUSTRALIA
PublisherAMER INST PHYSICS
Contribution Rank1
AbstractGranular debris flows in nature are generally composed of a wide range of solid particles and viscous pore fluids, moving at high traveling velocities down sloping channels. Multiple parameters govern a granular debris flow's rheological properties and affect the interactions between the solid and fluid phases of these flows. Study of the solids contact behavior (i.e., contact shearing and collisions) is essential for understanding the high flow mobility of catastrophic geophysical granular flows/avalanches. This study critically reviews two dimensionless numbers with clear physical meanings (e.g., the Savage number and the friction number), then demonstrates a new application of field monitoring data of natural debris flows to obtain specific values of these numbers for classifying flowing regimes of granular debris flows on large scales. These numbers are then used to analyze and illustrate the contact behavior of solid particles in different flow regimes. This study shows that the flow regimes of granular debris flows are governed by the relative dominance of contact shearing and collisions between solid particles, as well as being significantly affected by the flow's pore fluid viscosity.
KeywordGranular debris flow field study solids contact behavior pore fluid pressure flow regime
DOI10.1063/1.4812016
ISBN978-0-7354-1166-1
ISSN0094-243X
Indexed ByCPCI
WOS IDWOS:000321003200159
Citation statistics
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25215
Collection山地灾害与地表过程重点实验室
Corresponding AuthorGordon G. D. Zhou
Affiliation1.Key Laboratory of Mountain Hazards and Earth Surface Process, Chinese Academy of Sciences, Chengdu, China;
2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Conservancy, Chengdu, China;
3.State Key Laboratory for Hydroscience and Engineering, Tsinghua University, Beijing, China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding 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
Gordon G. D. Zhou,Q. C. Sun,M. L. Fei. Study of Solids Contact Shearing and Collisions in Granular Debris Flows[C]//Yu A, Dong K, Yang R, Luding S:AMER INST PHYSICS,2013:654-657.
Files in This Item:
File Name/Size DocType Version Access License
Study of Solids Cont(912KB)会议论文 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Gordon G. D. Zhou]'s Articles
[Q. C. Sun]'s Articles
[M. L. Fei]'s Articles
Baidu academic
Similar articles in Baidu academic
[Gordon G. D. Zhou]'s Articles
[Q. C. Sun]'s Articles
[M. L. Fei]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Gordon G. D. Zhou]'s Articles
[Q. C. Sun]'s Articles
[M. L. Fei]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Study of Solids Contact Shearing and Collisions in Granular Debris Flows.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.