Effects of Particle Size on Fault Gouge Frictional Characteristics and Associated Acoustic Emission
Joint Authors
Lu, Caiping
Liu, Yang
Zhang, Heng
Zhao, Tongbin
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-01
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Our experimental work was designed to explore the particle size effect of simulated fault gouge on slip characteristics by the conventional double-direct shear friction configuration combined with acoustic emission (AE).
The following conclusions were drawn: (1) smaller particles allow for an initially higher compaction rate at a higher speed and longer duration for force chain formation and destruction.
The larger the particle size is, the higher the slipping displacement rate is; (2) the smaller the particle size is, the larger the friction coefficient is, and thus the higher the fault strength is.
In addition, the larger the shear velocity is, the higher the fault strength is; (3) the smaller the particle size is, the higher the shear stress drop generated by the stick-slip is, and the stronger the dynamic slip intensity for a stick-slip period is; and (4) surface defects of forcing blocks possibly help to embed foregoing “stability” and “stable sliding” into the normal stick-slip stage.
Especially, the “stable sliding” is possibly related to formation of stubborn force chains.
These findings may shed some insights into further clarification of slipping characteristics and discrimination of precursory signs of fault dynamic instability with different-sized gouge particles.
American Psychological Association (APA)
Liu, Yang& Lu, Caiping& Zhao, Tongbin& Zhang, Heng. 2018. Effects of Particle Size on Fault Gouge Frictional Characteristics and Associated Acoustic Emission. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1116474
Modern Language Association (MLA)
Liu, Yang…[et al.]. Effects of Particle Size on Fault Gouge Frictional Characteristics and Associated Acoustic Emission. Advances in Civil Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1116474
American Medical Association (AMA)
Liu, Yang& Lu, Caiping& Zhao, Tongbin& Zhang, Heng. Effects of Particle Size on Fault Gouge Frictional Characteristics and Associated Acoustic Emission. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1116474
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116474