Numerical simulation of roadway gas migration based on the lattice Bolzmann method

DOI

10.2991/mining-14.2014.38How to use a DOI?

Keywords

roadway; gas migration; permeability; the lattice Boltzmann; pressure distribution; gas emission quantity

Abstract

Coal roadway tunneling could result in redistribution of stresses in the coal body around the roadway, and cause the spatially uneven distribution of permeability in the coal body around roadway both in the radial direction and the axial direction. Considering this engineering fact and using the lattice Boltzmann method, the migration law of the gas is studied in the coal body around the roadway. Research shows that: as time goes on, the gas pressure dropped area of the coal body will gradually increases; along the radical direction of the roadway, the gas pressure gradient in the coal body closer to the roadway wall would gradually decrease, whereas the gas pressure gradient in the coal body farther from the roadway wall would gradually increase, and at the locations with stress concentration and low permeability, because the gas flow is easily blocked, it would be likely to cause a higher gas pressure gradient; the model for calculating the gas emission quantity of the roadway is given, and the calculated results can provide the basis for the ventilation design of the roadway

Copyright

© 2014, 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  - Zhigang Zhao
AU  - Yongbo Zhang
AU  - Yunliang Tan
PY  - 2014/10
DA  - 2014/10
TI  - Numerical simulation of roadway gas migration based on the lattice Bolzmann method
BT  - Proceedings of the Taishan Academic Forum – Project on Mine Disaster Prevention and Control
PB  - Atlantis Press
SP  - 248
EP  - 257
SN  - 2352-5401
UR  - https://doi.org/10.2991/mining-14.2014.38
DO  - 10.2991/mining-14.2014.38
ID  - Zhao2014/10
ER  -