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Coal Rock

1ntroductionoalgas outburst is a dynamic and complex phenomenon that the broken coal and gas are suddenly ejected from the coal seam to the mining space in large quantities beamish and crosdale, 1998 yuan, 2016ckburst is a dynamic phenomenon of sudden and violent destruction of coal rock due to the instantaneous release of elastic energy konicek et al2013 zhao and jiang, 2010.