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利用自主研发的深部温度-压力耦合气体运移实验系统,对四川芙蓉白胶煤矿的煤样进行不同工程温度(20、25、30、35、40℃)下的单轴压缩试验,研究工程温度对深部煤岩物理力学性质的影响规律。结果发现,煤岩的单轴抗压强度和弹性模量随着温度的升高而降低,且温度越高力学参数下降梯度越大。根据不同温度下恒温阶段瓦斯逸出量变化趋势认为吸附瓦斯的解吸运移对影响煤岩力学性质有很重要的作用。
The uniaxial compression tests of coal samples from Furong Baijiao Mine in Sichuan Province under different engineering temperatures (20, 25, 30, 35 and 40 ℃) were carried out by using self-developed deep temperature-pressure coupling gas migration experimental system. The effects of engineering temperature On the physical and mechanical properties of deep coal rock law. The results show that the uniaxial compressive strength and elastic modulus of coal rock decrease with the increase of temperature, and the higher the temperature is, the greater the gradient of mechanical parameter decline. According to the changing tendency of methane emission at constant temperature at different temperatures, it is considered that the desorption and migration of adsorbed gas plays an important role in influencing the mechanical properties of coal and rock.