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利用含瓦斯煤三轴伺服渗流系统,对突出型煤试件进行不同围压的三轴压缩试验。试验结果表明:围压对煤样的弹性模量、峰值强度和变形特性都有一定程度的影响;煤样的弹性模量、峰值强度和变形都随围压的增大而增加。根据以上的研究,围压对煤岩体强度的影响规律和煤岩体的变形特性,对进一步认识含瓦斯煤岩的力学性质具有重要的意义。
Triaxial compression tests with different confining pressures were carried out on the protruding coal samples by using the gas containing coal triaxial servo system. The results show that the confining pressure has a certain degree of influence on the elastic modulus, peak strength and deformation of coal samples. The elastic modulus, peak strength and deformation of coal samples increase with the increase of confining pressure. Based on the above research, the law of confining pressure on the strength of coal and rock mass and the deformation characteristics of coal and rock mass are of great significance for further understanding the mechanical properties of coal and rock containing gas.