Research on impact characteristics of inclined coal-rock composite body

DOI

10.2991/coal-16.2016.27How to use a DOI?

Keywords

coal-rock composite model; impact instability; different inclined angles; evolution of impact energy

Abstract

In this paper, the coal-rock composite models with different inclined angles were established using particle flow code, and the impact instability characteristics after unloading were analyzed. In addition, the evolution process of impact energy was studied. The research results show that the strain energy of coal-rock composite model firstly releases linearly, and then releases obeying a power function. What is more, the kinetic evolution process is divided into accelerated impact stage, stable impact stage, and residual impact stage. With the increase of the inclined angle of coal seam, the accumulated maximum strain energy decreases, while the obtained maximum kinetic energy increases. In the same inclined coal seam, the strain energy and the kinetic energy of the roadway in the lower end of the coal seam were larger than that in the upper end.

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  - Tan Yunliang
AU  - Zhang Yubao
PY  - 2016/10
DA  - 2016/10
TI  - Research on impact characteristics of inclined coal-rock composite body
BT  - Proceedings of the 8th Russian-Chinese Symposium “Coal in the 21st Century: Mining, Processing, Safety"
PB  - Atlantis Press
SP  - 134
EP  - 137
SN  - 2352-5401
UR  - https://doi.org/10.2991/coal-16.2016.27
DO  - 10.2991/coal-16.2016.27
ID  - Yunliang2016/10
ER  -