WANG Jun-hui~, LI Bao-fu~, ZHANG Tao~. Research of Action Range and Mechanism of Coal-gun Phenomenon in Drifting Process[J]. Journal of Mine Automation, 2010, 36(7): 39-41.
Citation: WANG Jun-hui~, LI Bao-fu~, ZHANG Tao~. Research of Action Range and Mechanism of Coal-gun Phenomenon in Drifting Process[J]. Journal of Mine Automation, 2010, 36(7): 39-41.

Research of Action Range and Mechanism of Coal-gun Phenomenon in Drifting Process

  • In order to explain action range and mechanism of coal-gun phenomenon,numerical simulation research was maken for deforming and destroyed process and acoustic emission phenomenon of surrounding rock in drifting process of a coal mine by use of RFPA2D numerical calculation software.The simulation result showed that coal-gun phenomenon takes place in range of 15 m away from two sides of tunnel and 10 m away from roof in extraction tunnels of mine working face,and the phenomenon is a releasing process of huge amounts of elastic energy accumulated in process of deformation and destroy of tunnel,and it is only a dynamical phenomenon with relatively small energy,not portent information of rock burst.
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