潘西煤矿低瓦斯煤层喷孔动力显现规律研究

聂凤祥, 郭海峰

聂凤祥,郭海峰.潘西煤矿低瓦斯煤层喷孔动力显现规律研究[J].工矿自动化,2019,45(3):12-17.. DOI: 10.13272/j.issn.1671-251x.17400
引用本文: 聂凤祥,郭海峰.潘西煤矿低瓦斯煤层喷孔动力显现规律研究[J].工矿自动化,2019,45(3):12-17.. DOI: 10.13272/j.issn.1671-251x.17400
NIE Fengxiang, GUO Haifeng. Research on dynamic appearance regularity of blow-out from drilling hole in low gas coal seam of Panxi Coal Mine[J]. Journal of Mine Automation, 2019, 45(3): 12-17. DOI: 10.13272/j.issn.1671-251x.17400
Citation: NIE Fengxiang, GUO Haifeng. Research on dynamic appearance regularity of blow-out from drilling hole in low gas coal seam of Panxi Coal Mine[J]. Journal of Mine Automation, 2019, 45(3): 12-17. DOI: 10.13272/j.issn.1671-251x.17400

潘西煤矿低瓦斯煤层喷孔动力显现规律研究

基金项目: 

国家重点研发计划资助项目(2016YFC0801408)

详细信息
  • 中图分类号: TD712

Research on dynamic appearance regularity of blow-out from drilling hole in low gas coal seam of Panxi Coal Mine

  • 摘要: 为揭示潘西煤矿深部低瓦斯煤层喷孔动力显现规律,在潘西煤矿6198工作面对瓦斯含量与采动应力进行了现场测试,并采用FLAC3D软件对6198工作面前方应力分布进行了模拟分析,总结了工作面瓦斯含量和应力分布规律,分析了低瓦斯煤层喷孔动力显现机制。研究结果表明:① 潘西煤矿6198工作面整体瓦斯含量偏低,采深越大,瓦斯含量越高。② 受断层影响,工作面前方应力集中系数最大为1.36。③ 潘西煤矿6198工作面低瓦斯煤层喷孔等动力显现现象是高应力作用下煤体破碎、瓦斯压力作用下煤体喷出的过程;煤体释放的内部潜能和瓦斯内能为煤体破碎和移动提供能量,与浅部煤层相比,深部低瓦斯煤层喷孔动力显现所需的瓦斯膨胀能阈值降低。
    Abstract: In order to reveal dynamic appearance regularity of blow-out from drilling hole in deep low gas coal seam of Panxi Coal Mine, field tests of gas content and mining stress were carried out in 6198 working face of Panxi Coal Mine, and simulation analysis of stress distribution in front of 6198 working face was also done by use of FLAC3D software. Distribution regularities of gas content and stress in the working face were studied, and dynamic appearance mechanism of blow-out from drilling hole in low gas coal seam was analyzed. The study results show that gas content in 6198 working face is low in general, and the greater mining depth is, the higher gas content is. Affected by faults, the maximum stress concentration factor in front of the working face is 1.36. Dynamic appearance of blow-out from drilling hole in low gas coal seam in 6198 working face of Panxi Coal Mine is a process of coal body crushing under high stress and then spraying under gas pressure. Internal potential released by coal body and gas internal energy can provide energy for coal body to break and move. Compared with shallow coal seam, threshold of gas expansion energy decreases which causes dynamic appearance of blow-out from drilling hole in deep low gas coal seam.
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出版历程
  • 刊出日期:  2019-03-19

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