The Impact Analysis of Coal’s Elastic Energy on the Coal and Gas Outburst Shock Wave

Abstract:

According to the gas dynamic theory, this paper deduces the approximate calculation formula on elastic energy of a tons of coal through theory analysis, and then gets the quantitative calculation method between incident overpressure and reflected overpressure of the coal and gas outburst shock wave. The calculation formula in this paper is in line with the measured values, and so its validity has been verified. The analysis result shows that the effect of the elastic energy during the process of coal and gas outburst should be considered when the depth of the coal seam is great and the coal’s modulus of elasticity is small.

• Periodical: Advanced Materials Research (Volumes 616-618)
• Pages: 390-395
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.616-618.390
• Online since: December 2012
• Authors: Cheng Wu Li, Tian Bao Gao, Shan Yang Wei, Teng Li
• Keywords: Coal Outburst, Elastic Energy, Expansion Energy of Gas, Gas Outburst, Overpressure, Shock Wave

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