Numerical Study on Shocking Coal Seam of Multi-Points Explosion with High-Pressure Gas

Abstract:

The permeability of coal seam is an important parameter for the gas extraction and gas outburst control. However, most of the coal seams are low-permeability with outstanding characteristic in China. Therefore，it is a good technology to provide the theoretical basis for increasing the permeability of low-gas- permeability coal seam by shocking with high-pressure air. Based on the percolation theory of porous media and combining the gas pressure change after shocking the coal seam with high-pressure air, the solid-gas coupled mathematical model is presented for the flow in the coal seam. By applying the software, the numerical simulation is computed and analyzed for the gas pressure evolution owing to the multi-spot continuous shocking the coal seam by the high-pressure air under the different pressure values and strata pressure.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 450-454
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.450
• Online since: May 2012
• Authors: Kun Gao, Ji Ren Wang, Bao Shan Jia
• Keywords: Gas Extraction, High-Pressure Air, Low-Permeability Coal Seams, Numerical Simulation

References

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