Gas Desorption and Transportation in Original Coal of Baijiao Coal Mine Under Temerature-stress Loading Condition

DOI

10.2991/jimet-15.2015.137How to use a DOI?

Keywords

desorption; transportation; concentration; gas emition; crack volumetric strain;

Abstract

This paper presents experimental investigation on gas desorption and transportation in bulk coal under temperature-stress conditions, focusing on gas emition at three stages, heating stage, uniaxial loading stage and confined pressure loading stage. These tests conducted to simulate the effects of underground mining conditions on bulk coal itself were carried out by a Coal Sample Temperature-Pressure Coupling Experimental System. Through these tests, the desorptive volume of sampled gases were measured, the relationship between crack propagation and gas emit pressure was studied, the emitted gas volume and sampled gases’ concentrations of each stage were compared. The results show that CH4 has a larger desorption rate than CO2, confined pressure contributes more to gas emition than the uniaxial stress, and it will result in high gas pressure and high concentration of sampled gases, which will cause high possibility of danger.

Copyright

© 2015, 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  - X.H. Zhang
AU  - Y. Chang
AU  - X.l. Ren
PY  - 2015/12
DA  - 2015/12
TI  - Gas Desorption and Transportation in Original Coal of Baijiao Coal Mine Under Temerature-stress Loading Condition
BT  - Proceedings of the 2015 Joint International Mechanical, Electronic and Information Technology Conference
PB  - Atlantis Press
SP  - 735
EP  - 738
SN  - 2352-538X
UR  - https://doi.org/10.2991/jimet-15.2015.137
DO  - 10.2991/jimet-15.2015.137
ID  - Zhang2015/12
ER  -