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介绍了三维应力作用下煤岩体孔隙裂隙中瓦斯气体渗流规律的实验方法和实验结论。主要揭示： 气体吸附作用和变形作用对渗流有重要影响， 吸附作用表现为渗透系数随孔隙压呈负幂函数规律变化， 变形作用表现为渗透系数随有效体积应力呈负指数规律变化， 吸附与变形共同作用的结果， 使渗透系数随孔隙压变化表现为存在一临界值ｐｃ， 当ｐ ＜ ｐｃ 时， 渗透系数衰减， 当ｐ ＞ ｐｃ 时，渗透系数增加。
The experimental methods and experimental conclusions on the gas seepage law in the pore fissures of coal and rock mass under three-dimensional stress are introduced. It is mainly revealed that gas adsorption and deformation have an important influence on seepage. The adsorption performance shows that the permeability coefficient changes negatively with the pore pressure, and the deformation effect shows that the permeability coefficient changes negatively with the effective volume stress. The adsorption and deformation As a result of the interaction, the permeability coefficient shows a critical value pc with the change of pore pressure. When p pc, the permeability coefficient increases.