Generating Behaviors of Strong Tremors and Experimental Study of Rockburst-Triggering Criterion
Joint Authors
Dou, Lin-Ming
Cai, Wu
Fan, Chaojun
Wang, Guifeng
Yuan, Xiaoyuan
Gong, Siyuan
Jin, Feng
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-18
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Numerous tremors occur during excavation and mining periods in coal mines, and low-energy tremors often occur before strong tremors.
In addition, it is found that not all strong tremors cause rockbursts.
Therefore, generating behaviors of strong tremors and the triggering criterion for the occurrence of the rockburst must be investigated.
In this study, generating behaviors of strong tremors were inferred by velocity tomograms and energy density clouds.
An innovative facility capable of applying dynamic disturbance to roadway models was developed to study the triggering criterion for rockbursts.
Velocity tomograms indicated that the stress concentration extended to the syncline region with the advance of the coalface.
High-energy-density clouds expanded rapidly and regularly in some areas that were parts of the high-velocity region, indicating that the stress increased rapidly in these areas, until strong tremors took place nearby.
AE activities suggested that the modelled roadway offered good resistance as the dynamic loading energy grew from 29.4 J to 117.6 J.
Then, sharp AE activity at the dynamic loading energy of 147 J indicated the ultimate shock resistance of the roadway was almost reached.
Finally, bursting failure of the modelled roadway was observed at a dynamic loading energy of 176.4 J.
American Psychological Association (APA)
Wang, Guifeng& Jin, Feng& Gong, Siyuan& Dou, Lin-Ming& Fan, Chaojun& Cai, Wu…[et al.]. 2019. Generating Behaviors of Strong Tremors and Experimental Study of Rockburst-Triggering Criterion. Shock and Vibration،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1211409
Modern Language Association (MLA)
Wang, Guifeng…[et al.]. Generating Behaviors of Strong Tremors and Experimental Study of Rockburst-Triggering Criterion. Shock and Vibration No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1211409
American Medical Association (AMA)
Wang, Guifeng& Jin, Feng& Gong, Siyuan& Dou, Lin-Ming& Fan, Chaojun& Cai, Wu…[et al.]. Generating Behaviors of Strong Tremors and Experimental Study of Rockburst-Triggering Criterion. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1211409
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211409