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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.
In order to discuss the influence of raw coal bedding on gas seepage, the seepage characteristics of gas along two parallel extremities of parallel and vertical coal bed facets are theoretically analyzed. By comparing and analyzing the permeability coefficient, the gas permeability coefficient Which is larger than the gas permeability coefficient of the vertical coal seam bedding plane.After the laboratory experiments on the raw coal, the approximate smooth curve of the gas seepage velocity and the stress and strain curve along the coal seam bedding direction is obtained through the experimental data analysis, while the vertical coal seam face gas The relationship between seepage velocity and stress and strain curves is abrupt and tortuous. The trend of gas seepage velocity in vertical strata bedding direction is greater than that of parallel strata, but the gas seepage velocity in parallel strata direction is obviously larger than that of vertical strata It is consistent with the theoretical analysis.