Study on damage evolution characteristics of coal and rock uniaxial compression based on the acoustic emission

DOI

10.2991/icseee-15.2016.57How to use a DOI?

Keywords

Coal and Rock, Damage Evolution, Acoustic Emission, Crack Propagation.

Abstract

In order to obtain damage evolution characteristics of coal and rock under the compression, conduct uniaxial compression experiment for coal and rock with rigid loading experiment machine based on the acoustic emission. Gather the AE characteristic parameters in the process of coal and rock damage, use the damage variable of the accumulated AE ringing count, build uniaxial damage model for coal and rock based on the gathered acoustic emission characteristics, the damage evolution equation of coal and rock under compression is given, discuss the relationship between Acoustic emission parameters and mechanics failure mechanism of coal and rock. Research results show that acoustic emission signal can reflect the internal damage of coal and rock, which is closely related to their internal native crack compaction and evolution process including new crack production, extension and cut-through.The deformation and damage evolution degree of loaded coal and rock present positive correlation characteristics with accumulated acoustic emission ringing count. 

Copyright

© 2016, 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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TY  - CONF
AU  - Shugang Li
AU  - Ning Wang
AU  - Tianjun Zhang
PY  - 2016/04
DA  - 2016/04
TI  - Study on damage evolution characteristics of coal and rock uniaxial compression based on the acoustic emission
BT  - Proceedings of the 2015 4th International Conference on Sustainable Energy and Environmental Engineering
PB  - Atlantis Press
SP  - 352
EP  - 356
SN  - 2352-5401
UR  - https://doi.org/10.2991/icseee-15.2016.57
DO  - 10.2991/icseee-15.2016.57
ID  - Li2016/04
ER  -