Study on Electric-Magnetic-Acoustic Signal Regularity and Its Correlation during Rock Shear Failure
Joint Authors
Jia, Huilin
Niu, Yue
Liu, Xiaofei
Wang, Enyuan
Source
Advances in Materials Science and Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-07-18
Country of Publication
Egypt
No. of Pages
12
Abstract EN
During mining activities, the deformation and damage of coal rock materials might result in coal rock dynamic disasters, such as rock burst.
It leads to serious casualties and property losses.
Generally, the occurrence of dynamic failure of coal and rock are caused by shear failure of coal seam.
Geophysics signals are generated and related to damage evolution in this loading process.
In this paper, sandstone samples were subjected to shear failure laboratory experiments, and the electric-magnetic-acoustic signal regularity was measured and analyzed comparatively.
The results indicated magnetic signals were more correlated with stress and acoustic emission (AE) signals, while the amplitude of electric signal fluctuation was larger when main failure occurred.
With the increase of sample size and shear strength, the strength of electric-magnetic-acoustic signals increased.
The correlation coefficients between the magnetic signal and stress as well as AE energy were superior to those of electric signals.
The coupling model between AE and electric signals was established, which shows good statistical correlation.
This study lays the foundations for further interpreting the generation mechanism of the electric signal.
It provides a new method to indicate the damage evolution of coal rock materials.
American Psychological Association (APA)
Jia, Huilin& Niu, Yue& Liu, Xiaofei& Wang, Enyuan. 2019. Study on Electric-Magnetic-Acoustic Signal Regularity and Its Correlation during Rock Shear Failure. Advances in Materials Science and Engineering،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1120141
Modern Language Association (MLA)
Jia, Huilin…[et al.]. Study on Electric-Magnetic-Acoustic Signal Regularity and Its Correlation during Rock Shear Failure. Advances in Materials Science and Engineering No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1120141
American Medical Association (AMA)
Jia, Huilin& Niu, Yue& Liu, Xiaofei& Wang, Enyuan. Study on Electric-Magnetic-Acoustic Signal Regularity and Its Correlation during Rock Shear Failure. Advances in Materials Science and Engineering. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1120141
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1120141