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实验通过利用高精度电阻测试实验装置,在不同含水率,同一瓦斯压力条件下,对煤体电阻值随吸附/解吸瓦斯的变化规律进行测定。研究结果表明:不同含水率条件下,在瓦斯吸附过程中,煤体电阻值随瓦斯吸附量先逐渐减小,后趋于平稳;而在瓦斯解吸过程中,煤体电阻值与煤中瓦斯含量呈指数关系。
Experiments using high-precision resistance test experimental device, with different moisture content, the same gas pressure conditions, the coal resistance value with the adsorption / desorption of gas changes were measured. The results show that under the different water content conditions, the resistance value of coal decreases with the gas adsorption capacity and then tends to be steady after the gas is adsorbed; while in the gas desorption process, the electrical resistance value of coal and the gas content in coal Exponential relationship.