煤的坚固性系数对瓦斯运移的影响

The Influence of Coal Consistent Coefficiet on Gas Migration

摘要: 以不同坚固性系数条件下的三轴渗透实验数据为基础,结合渗流力学的基本理论,推导出考虑坚固性系数条件的瓦斯渗流方程,选取贵州五轮山8^#煤层构建模型,并通过有限元软件COMSOL Multiphysics计算模拟,得出受坚固性系数影响时,煤层内瓦斯压力、瓦斯含量、瓦斯流速及瓦斯渗透率的变化规律,模拟结果与实验结论保持了较好的一致性。
- 坚固性系数 /
- 渗透率 /
- 瓦斯运移 /
- 数值模拟
Abstract: Based on the triaxial permeability experiment data under the condition of the different consistent coefficient,and combined with the basic theory of seepage mechanics,this paper deduced the gas seepage equation which took into account the condition of consistent coefficient,and built the model which was based on the No.8 coal seam of Wulunshan Coal Mine in Guizhou.The finite element software COMSOL Multiphysics was used to carry out calculation and simulation,it obtained the variation law of gas pressure,content,velocity and permeability in coal seams with the influence of consistent coefficient,the simulation results kept good consistency with experimental conclusions.
- consistent coefficient /
- permeability /
- gas migration /
- numerical simulation

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