Deformation Analysis for Coal and Gas Outburst Cavity

Abstract:

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Outburst cavity formed during coal and gas outburst can be pear shaped, elliptical, or just like an irregularly elongated ellipsoid, its capacity is always smaller than the volume of ejected coal. And the gas emission quantity is almost 4 to 10 times as gas content in ejected coal. These are two different expressions of the same problem. To find the reasons for the decrease of outburst cavity volume and the increase of gas emission quantity per ton, by using the finite element code ANSYS, the damage zone and the failure zone of the outburst cavity were determined based on the static and dynamic combination method. In this paper, the reason for the decrease of the outburst volume was explained.

Info:

Periodical:

Edited by:

Dongye Sun, Wen-Pei Sung and Ran Chen

Pages:

2607-2613

DOI:

10.4028/www.scientific.net/AMM.121-126.2607

Citation:

Q. T. Hu et al., "Deformation Analysis for Coal and Gas Outburst Cavity", Applied Mechanics and Materials, Vols. 121-126, pp. 2607-2613, 2012

Online since:

October 2011

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Price:

$35.00

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