罗吉安, 王连国. 近距离煤层煤柱下方底板应力分布规律[J]. 煤矿安全, 2014, 45(2): 29-31,34.
    引用本文: 罗吉安, 王连国. 近距离煤层煤柱下方底板应力分布规律[J]. 煤矿安全, 2014, 45(2): 29-31,34.
    LUO Ji′an, WANG Lianguo. Floor Stress Distribution Laws Under Coal Pillar in Close Distance Coal Seams[J]. Safety in Coal Mines, 2014, 45(2): 29-31,34.
    Citation: LUO Ji′an, WANG Lianguo. Floor Stress Distribution Laws Under Coal Pillar in Close Distance Coal Seams[J]. Safety in Coal Mines, 2014, 45(2): 29-31,34.

    近距离煤层煤柱下方底板应力分布规律

    Floor Stress Distribution Laws Under Coal Pillar in Close Distance Coal Seams

    • 摘要: 近距离煤层下分层回采巷道的布置易受采后残留煤柱引起的集中应力的影响,通过对煤柱内集中应力分布情况的分析,提出了更加接近真实情况的煤柱受力模型,并在此基础上运用弹性力学理论和数值计算软件Mathcad结合具体的工程实践,分析了不同宽度煤柱下方底板应力传递及分布规律,计算了底板岩层不同深度水平截面上应力分布范围。

       

      Abstract: The mining roadway layout in the lower coal seam in close distance coal seam is affected by the concentrated stress caused by the residual pillar in upper layer, through the analysis of the distribution situations of the concentrated stress in the coal pillar, the force model which is closer to the real situation is put forward, then combined with the specific practice, the laws of the floor stress transfer and distribution are analyzed and the range of the stress distribution on the horizontal section of different

       

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