文章摘要
煤层层理对瓦斯渗流影响理论分析与实验研究
Research on frequency adjustment of variable frequency
  
DOI:
中文关键词: 煤层层理  瓦斯渗流  对比分析
英文关键词: coal bedding  gas seepage  comparative analysis
基金项目:国家自然科学基金资助项目(51674049)
作者单位
孙国文1,3,罗甲渊2,3,罗斌玉4 2.湖南科技大学 煤矿安全开采技术湖南省重点实验室湖南 湘潭 411201 
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中文摘要:
      为了探讨原煤层理对瓦斯渗流的影响,先从理论上分析瓦斯沿平行和垂直煤层层理面这2种极端情况的渗流特性,经对渗透系数比较分析,得到平行煤层层理面瓦斯渗透系数大于垂直煤层层理面瓦斯渗透系数.再对原煤进行实验室实验,通过对实验数据分析,得到沿煤层层理方向瓦斯渗流速度与应力、应变关系曲线近似光滑曲线,而垂直煤层层理面瓦斯渗流速度与应力、应变关系曲呈突变曲折曲线;垂直原煤层理方向瓦斯渗流速度增长趋势大于平行煤层层理方向,但平行原煤层理方向瓦斯渗流速度明显大于垂直原煤层理方向,这一结果与理论分析结果相吻合.
英文摘要:
      In order to investigate the effect on gas seepage in coal bedding, first, the seepage characteristics were analyzed, which of these two extremes of coal seam gas along the parallel and perpendicular to the bedding plane from the theory, by comparative analysis on the coefficient of permeability of coal seam gas, the coefficient of permeability of which the gas flow direction paralleled to the bedding plane is larger than that of vertical seam. Then, through testing of the raw coal in the laboratory and analysing on the experimental data, the curve is approximation smooth, which the gas paralleled to the bedding of the seepage velocity and stress strain, and the curve is rough between the gas seepage velocity perpendicular to the bedding plane and stress strain. The gas flow velocity of the vertical to bedding is greater than of the parallel to, but the coal gas seepage velocity of the parallel to bedding is larger than of the vertical to. This result is consistent with the theoretical analysis.
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