Numerical Simulation of Failure Behavior of Granular Debris Flows Based on Flume Model Tests
Joint Authors
Zhou, Jian
Li, Ye-xun
Jia, Min-cai
Li, Cui-na
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-05-14
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
In this study, the failure behaviors of debris flows were studied by flume model tests with artificial rainfall and numerical simulations (PFC3D).
Model tests revealed that grain sizes distribution had profound effects on failure mode, and the failure in slope of medium sand started with cracks at crest and took the form of retrogressive toe sliding failure.
With the increase of fine particles in soil, the failure mode of the slopes changed to fluidized flow.
The discrete element method PFC3D can overcome the hypothesis of the traditional continuous medium mechanic and consider the simple characteristics of particle.
Thus, a numerical simulations model considering liquid-solid coupled method has been developed to simulate the debris flow.
Comparing the experimental results, the numerical simulation result indicated that the failure mode of the failure of medium sand slope was retrogressive toe sliding, and the failure of fine sand slope was fluidized sliding.
The simulation result is consistent with the model test and theoretical analysis, and grain sizes distribution caused different failure behavior of granular debris flows.
This research should be a guide to explore the theory of debris flow and to improve the prevention and reduction of debris flow.
American Psychological Association (APA)
Zhou, Jian& Li, Ye-xun& Jia, Min-cai& Li, Cui-na. 2013. Numerical Simulation of Failure Behavior of Granular Debris Flows Based on Flume Model Tests. The Scientific World Journal،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-1033096
Modern Language Association (MLA)
Zhou, Jian…[et al.]. Numerical Simulation of Failure Behavior of Granular Debris Flows Based on Flume Model Tests. The Scientific World Journal No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-1033096
American Medical Association (AMA)
Zhou, Jian& Li, Ye-xun& Jia, Min-cai& Li, Cui-na. Numerical Simulation of Failure Behavior of Granular Debris Flows Based on Flume Model Tests. The Scientific World Journal. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-1033096
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1033096