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为进一步加强煤与瓦斯(甲烷)突出等矿山重大灾害预测预报的工作,开展煤与瓦斯突出全过程热动力现象研究。将煤样破碎后在煤与瓦斯突出相似模拟试验台内加压成型,开展不同粒径煤样的吸附、解吸及突出试验,获取试验过程中的煤体温度变化数据。结果表明:煤与瓦斯突出过程中煤体温度随时间的演化关系近似符合自然对数函数;煤样粒径对煤体温度变化有显著影响,煤样粒径越小,在吸附解吸瓦斯时温度变化量就越大、变化速度也更迅速。通过分析煤与瓦斯突出试验结果及能量关系得出,煤的粒径很大程度上决定了瓦斯吸附能力及瓦斯内能,瓦斯内能又很大程度上决定了煤与瓦斯突出强度。
In order to further strengthen the coal and methane (methane) outbreak and other major mine disaster prediction and forecasting work, to carry out the whole process of coal and gas outburst thermodynamic phenomena. After the coal sample was crushed, it was pressed and formed in the simulative test bench similar to the coal and gas outburst to carry out the adsorption, desorption and outburst test of coal samples of different particle sizes to obtain the temperature change data of the coal during the test. The results show that the evolution of coal body temperature over time approximates to the natural logarithm function. The particle size of coal sample has a significant effect on the temperature variation of coal body. The smaller the coal particle size, the lower the temperature at adsorption and desorption The greater the amount of change, the faster the rate of change. By analyzing the relationship between coal and gas outburst test results and energy, it is concluded that the coal particle size largely determines the gas adsorption capacity and gas internal energy, which in turn largely determines the intensity of coal and gas outburst.