中文摘要：

易碎的岩石材料的渗出物进化特征为岩石工程的稳定性和安全是很重要的。在这研究，一系列常规 triaxial 压缩和煤气的渗出物测试与测试系统的岩石力学 servo-controlled 在沙岩标本上被执行。基于试验性的结果，在渗透和变丑之间的关系第一详细被分析。结果证明 permeabilityaxial 紧张曲线能被划分成下列五个阶段：微缺点的闭合，线性有弹性的变丑的阶段，非线性的变丑的阶段，弄软的山峰以后的应力的阶段和剩余强度的阶段的阶段。渗出物进化特征密切也根据在渗透和容量的紧张之间的关系与容量的变丑被相关。煤气的渗出物压力在渗透进化上有大效果，这被发现，即渗透系数与增加煤气的渗出物压力增加。最后，易碎的沙岩标本的失败行为上的煤气的渗出物压力的影响被讨论。

英文摘要：

The seepage evolution characteristic of brittle rock materials is very significant for the stability and safety of rock engineering. In this research, a series of conventional triaxial compression and gas seepage tests were carded out on sandstone specimens with a rock mechanics servo-controlled testing system. Based on the experimental results, the relationship between permeability and deformation is firstly analyzed in detail. The results show that the permeabilityaxial strain curve can be divided into the following five phases： the phase of micro-defects closure, the phase of linear elastic deformation, the phase of nonlinear deformation, the phase of post-peak stress softening and the phase of residual strength. The seepage evolution characteristic is also closely correlated with the volumetric deformation according to the relationship between permeability and volumetric strain. It is found that the gas seepage pressure has a great effect on the permeability evolution, i.e. permeability coefficients increase with increasing gas seepage pressures. Finally, the influence of gas seepage pressures on the failure behavior of brittle sandstone specimens is discussed.