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主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
构造突出煤层地应力与瓦斯压力梯度关系模拟研究
  • Title

    Simulation Study on Relationship Between Ground Stress and Gas Pressure Gradient of Tectonic Outburst Seam

  • 作者

    黄显华徐纪元杨成轶朱红青

  • Author

    HUANG Xian-hua XU Ji-yuan YANG Cheng-yi ZHU Hong-qing

  • 单位

    中国矿业大学(北京)资源与安全工程学院

  • Organization
    School of Resources and Safety Engineering, China University of Mining and Technology (Bejing)
  • 摘要
    构造突出煤层中瓦斯压力梯度变化规律与水平地应力分布规律是影响煤与瓦斯突出的主要因素,建立了煤层瓦斯压力梯度与水平地应力定量计算模型;以坦家冲矿236-80北石门附近区域构造突出煤层为研究对象,由FLAC模拟可知,水平地应力趋近于0的区域煤体破坏最为严重;由计算可知,当水平地应力约为3 MPa时,构造突出煤层中瓦斯压力梯度会出现突变;当水平地应力大于3MPa时,沿煤层物理模型走向0~5与42~62 m两个区域瓦斯压力梯度急剧增加。
  • Abstract
    The gas pressure gradient variation law and the horizontal ground stress distribution law of the tectonic outburst seam would be the major factor affected to the coal and gas outburst. A quantitative calculation model of the seam gas pressure gradient and horizontal ground stress was established. Taking the regional tecto nic outburst seam near No. 236-80 north cross-cut in Tanjiachong Mine as a study object, the FLAC simulation result showed that the seam failure was serious in the re gion with horizontal ground stress approached to zero. The calculation showed that when the ground stress was about 3 MPa, the gas pressure gradient in the tectonic seam would have a sudden change. When the horizontal ground stress was over 3 MPa, the gas pressure gradient would rapidly increase in the two regionsof0~ 5 m and 42 ~ 62 m along the strike direction of the seam physical model.
  • 关键词

    构造突出煤层水平地应力瓦斯压力梯度煤与瓦斯突出

  • KeyWords

    tectonic outburst seam; horizontal ground stress; gas pressure gradient; coal and gas outburst;

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主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会

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