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  4. 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

文献类型：会议论文

作者Gordon G. D. Zhou1,2; Q. C. Sun3; M. L. Fei3
出版日期2013
会议日期JUL 08-12, 2013
会议地点Sydney
关键词Granular debris flow field study solids contact behavior pore fluid pressure flow regime
DOI10.1063/1.4812016
页码654-657
国家AUSTRALIA
英文摘要Granular 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.
源文献作者Yu A ; Dong K ; Yang R ; Luding S
产权排序1
会议录POWDERS AND GRAINS 2013 (AIP Conference Proceedings Vol. 1542)
会议录出版者AMER INST PHYSICS
语种英语
ISSN号0094-243X
ISBN号978-0-7354-1166-1
WOS记录号WOS:000321003200159
源URL[http://ir.imde.ac.cn/handle/131551/25215]  
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
通讯作者Gordon G. D. Zhou
作者单位1.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
推荐引用方式
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]. 见:. Sydney. JUL 08-12, 2013.

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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