为了研究层理面对煤体力学性质和渗透率的影响，利用自主研制的三轴瓦斯渗流装置和声发射监测系统，对不同层理角度煤样进行三轴压缩试验，同时采集相应的声发射数据，并结合莫尔−库仑强度准则对煤样的破坏形式进行分析。研究结果表明：在三轴加载下，各层理角度煤样的力学变形特性具有明显的层理效应，其峰值强度、弹性模量和泊松比均随着层理角度的增大呈先减小再增大的变化趋势；各层理角度煤样的渗透率变化趋势基本一致，均呈现出先减小再增大的“U”形变化，同时煤样的初始渗透率和最小渗透率随层理角度的增大而增大，C-90°煤样为其他层理煤样的2.5～5倍；声发射信号主要集中于屈服阶段和峰后破坏阶段，且在峰后破坏阶段煤样的振铃计数值达到峰值，其中，C-0°煤样产生的声发射信号最强烈，C-45°煤样产生的声发射信号最弱；莫尔−库仑强度准则可以很好地反映含单组层理煤样的破坏模式，试验结果与理论分析基本吻合。

In order to study the influence of bedding on the mechanical properties and permeability of coal samples, a triaxial gas seepage device and acoustic emission monitoring system developed by self-developed were used to conduct triaxial compression tests on coal samples at different bedding angles and to collect the corresponding acoustic emission data, and the failure forms of coal samples were analyzed combined with the Mohr-Coulomb strength criterion. The results show that the mechanical deformation characteristics of coal samples with different bedding angles have obvious bedding effects under triaxial loading, and the peak strength, elastic modulus and Poisson’s ratio all decrease first and then increase with the increase of bedding angles. The permeability of coal samples at each bedding angle shows the same trend, showing a U-shaped change of first decreasing and then increasing. At the same time, the initial permeability and minimum permeability of coal samples increase with the increase of bedding angle, and the C-90° bedding coal sample is 2.5-5 times that of other bedding coal samples. The acoustic emission signals are mainly concentrated in the yield stage and the post-peak failure stage, and in the post-peak failure stage, the ringing meter value of the coal sample reaches the peak. The acoustic emission signal generated by the coal sample at 0° is also the strongest, while the acoustic emission signal generated by the coal sample at 45° is the weakest. The Mohr-Coulomb strength criterion can well reflect the failure mode of coal sample with single stratified group, and the experimental results are basically in agreement with the theoretical analysis.