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XU Chao, CHENG Yuan-ping, WANG Liang, LIU Qing-quan, CAI Chun-cheng. The Influence of Extremely Thick Key Layer on Pressure-relief Effect of Remote Lower Protective Seam Mining[J]. Safety in Coal Mines, 2012, 43(8): 26-29.
Citation: XU Chao, CHENG Yuan-ping, WANG Liang, LIU Qing-quan, CAI Chun-cheng. The Influence of Extremely Thick Key Layer on Pressure-relief Effect of Remote Lower Protective Seam Mining[J]. Safety in Coal Mines, 2012, 43(8): 26-29.
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The Influence of Extremely Thick Key Layer on Pressure-relief Effect of Remote Lower Protective Seam Mining

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  • Published Date: August 09, 2012
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  • Taking Haizi coal mine as engineering background,and using FLAC3Dsoftware,the paper simulates remote lower protective 10# seam mining in extremely thick key layer and the mining without key layer.Then,through contrastive analysis,the influence of extremely thick key layer on pressure-relief effect of protected 9# seam is obtained.The results indicate that pressure-relief effect in extremely thick key layer is better than that without key layer,which is the reason of pressure-relief and gas drainage by crossing drillings in long-distance overlying coal seam.After result investigation,the pressure of protected seam is released effectively.
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    • References (6)
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