Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018)

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Energy Mechanism of Rock Burst in the Rock-Coal Combined Body

Authors
Shaojie Chen, Dawei Yin, Ning Jiang, Zhen Zhang, DongMei Huang
Corresponding Author
Shaojie Chen
Available Online October 2018.
DOI
10.2991/coal-18.2018.12How to use a DOI?
Keywords
rock burst hazards, roof rock-coal combined body, elastic energy attenuation degree, equivalent elastic modulus; height ratio of roof rock to coal, elastic modulus of roof rock or coal
Abstract

Rock burst hazards during deep mining are a dynamic phenomenon of the sudden release of elastic energy aggregated in the roof rock-coal combined body. In this paper, the occurrence mechanism of rock burst for roof rock-coal combined body was studied through energy dissipation theory. And the elastic energy attenuation degree of combined body was defined. Additionally, the effects of height ratio of roof rock to coal and elastic modulus of roof rock or coal on the rock burst were analyzed in the potentiality of the combined body. Results show that the elastic energy attenuation degree is positively correlated with the equivalent elastic modulus of combined body. And the equivalent elastic modulus is shown to a positive correlation with the height ratio of roof rock to coal and elastic modulus of roof rock or coal. Generally, the larger the height ratio and elastic modulus of roof rock or coal are, the great the equivalent elastic modulus is and the stronger the elastic energy attenuation degree is. And the roof rock-coal combined body easily occurs in rock burst. The above achievements are of great significance to understand the elastic energy attenuation characteristics and to prevent rock burst hazards of the roof rock-coal combined body.

Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018)
Series
Advances in Engineering Research
Publication Date
October 2018
ISBN
10.2991/coal-18.2018.12
ISSN
2352-5401
DOI
10.2991/coal-18.2018.12How to use a DOI?
Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

risenwbib
TY  - CONF
AU  - Shaojie Chen
AU  - Dawei Yin
AU  - Ning Jiang
AU  - Zhen Zhang
AU  - DongMei Huang
PY  - 2018/10
DA  - 2018/10
TI  - Energy Mechanism of Rock Burst in the Rock-Coal Combined Body
BT  - Proceedings of the 9th China-Russia Symposium "Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protection" (COAL 2018)
PB  - Atlantis Press
SP  - 68
EP  - 72
SN  - 2352-5401
UR  - https://doi.org/10.2991/coal-18.2018.12
DO  - 10.2991/coal-18.2018.12
ID  - Chen2018/10
ER  -