Study on the Law of Gas Desorption of Lump Coal Samples under Uniaxial Compression
- DOI
- 10.2991/icmse-15.2015.112How to use a DOI?
- Keywords
- uniaxial compression; desorption; load; pore structure; mathematical model
- Abstract
Taking the mining influence on the gas desorption characteristics of coal body into consider, a new gas adsorption and desorption system of coal sample under compression was manufactured. Using this test system, the gas desorption characters of coal samples were experimented under different gas pressure with some uniaxial compress pressure and different uniaxial compress pressure with constant gas pressure. The experimental results show that: 1) under the same uniaxial compress load, the greater the initial gas pressure is in coal samples, the greater the cumulative desorption capacity is; 2) under the same initial gas pressure, the cumulative desorption capacity of coal not only relates to the load, but also has to do with internal pore structure and other factors of coal body; 3) fitting the experimental data with different empirical formula, the mathematical model of gas desorption of coal samples under uniaxial compression with different gas pressure was obtained. The results of this paper can provide some guidance for gas drainage in gas coal mine and those can improve the further understanding of gas adsorption and desorption in coal body under mining influence.
- 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/).
Cite this article
TY - CONF AU - Xiaofei Li AU - Xinxing Han AU - Xiaobin Yang PY - 2015/12 DA - 2015/12 TI - Study on the Law of Gas Desorption of Lump Coal Samples under Uniaxial Compression BT - Proceedings of the 2015 6th International Conference on Manufacturing Science and Engineering PB - Atlantis Press SP - 622 EP - 632 SN - 2352-5401 UR - https://doi.org/10.2991/icmse-15.2015.112 DO - 10.2991/icmse-15.2015.112 ID - Li2015/12 ER -