IMHE OpenIR  > 山地灾害与地表过程重点实验室
Study of pore fluid effect on the mobility of granular debris flows
Zhou GD(周公旦)
Corresponding Author周公旦
Source PublicationPOWDERS AND GRAINS 2017,The 8th International Conference on the Micromechanics of Granular Media ; EPJ Web of Conferences 140
Conference Date2017-7-3
Conference PlaceMontpellier, France
Funding OrganizationUniversité de Montpellier
Granular debris flows in nature are composed of a wide range of solids and viscous pore fluids, moving at high velocities down sloping channels. The pore fluids in a granular debris flow affect the interactions between the solid and fluid phases and thus govern the debris-flow mobility. Study of the pore fluid effect (i.e., excess pore water pressures correlated to solid structures, and the viscous shearing and dragging) is essential for understanding the high flow mobility of granular debris flows. This study critically
reviews two dimensionless numbers with clear physical meanings, then demonstrates a new application of field monitoring data for identifying natural debris flows on large scales (i.e., surge and continuous debrisflows, respectively). This study illustrates that, the pore fluid viscous shearing stress dominates solid inertial stress due to solids collision. It is also found that different to continuous debris-flows, the high pore fluid pressures generated in surge debris-flow body dissipate quite slowly and mostly influence particle contact
behaviour significantly. A new scientific criterion for identification of continuous and surge debris flow in nature can be given by this study
KeywordPore Fluid Mobility Granular Debris Flows
Subject Area自然地理学
Indexed ByISTP
Citation statistics
Document Type会议论文
Recommended Citation
GB/T 7714
Zhou GD. Study of pore fluid effect on the mobility of granular debris flows[C],2017:09046.
Files in This Item:
File Name/Size DocType Version Access License
19-【AIP】-pg2017-gord(494KB)会议论文 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhou GD(周公旦)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhou GD(周公旦)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhou GD(周公旦)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 19-【AIP】-pg2017-gordon.pdf
Format: Adobe PDF
All comments (0)
No comment.

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