Size Effect on Acoustic Emission Characteristics of Coal-Rock Damage Evolution
Joint Authors
Wen, Zhijie
Zhang, Hualei
Wang, Xiao
Chen, Lianjun
Lin, Guan
Source
Advances in Materials Science and Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-01-05
Country of Publication
Egypt
No. of Pages
8
Abstract EN
Coal-gas outburst, rock burst, and other mine dynamic disasters are closely related to the instability and failure of coal-rock.
Coal-rock is the assemblies of mineral particles of varying sizes and shapes bonded together by cementing materials.
The damage and rupture process of coal-rock is accompanied by acoustic emission (AE), which can be used as an effective means to monitor and predict the instability of coal-rock body.
In this manuscript, considering the size effect of coal-rock, the influence of different height to diameter ratio on the acoustic emission characteristics of coal-rock damage evolution was discussed by microparticle flow PFC2D software platform.
The results show that coal-rock size influences the uniaxial compressive strength, peak strain, and elastic modulus of itself; the size effect has little effect on the acoustic emission law of coal-rock damage and the effects of the size of coal-rock samples on acoustic emission characteristics are mainly reflected in three aspects: the triggering time of acoustic emission, the strain range of strong acoustic emission, and the intensity of acoustic emission; the damage evolution of coal-rock specimen can be divided into 4 stages: initial damage, stable development, accelerated development, and damage.
American Psychological Association (APA)
Wen, Zhijie& Wang, Xiao& Chen, Lianjun& Lin, Guan& Zhang, Hualei. 2017. Size Effect on Acoustic Emission Characteristics of Coal-Rock Damage Evolution. Advances in Materials Science and Engineering،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1123877
Modern Language Association (MLA)
Wen, Zhijie…[et al.]. Size Effect on Acoustic Emission Characteristics of Coal-Rock Damage Evolution. Advances in Materials Science and Engineering No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1123877
American Medical Association (AMA)
Wen, Zhijie& Wang, Xiao& Chen, Lianjun& Lin, Guan& Zhang, Hualei. Size Effect on Acoustic Emission Characteristics of Coal-Rock Damage Evolution. Advances in Materials Science and Engineering. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1123877
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1123877