利用自主研发的多场耦合煤层瓦斯抽采物理模拟试验系统，开展了不同吸附性气体抽采的物理模拟试验，探讨了煤层瓦斯抽采过程中煤储层气压、温度及煤层变形等参数的时空演化规律。结果表明：（1）煤储层气压在抽采前期下降较快并形成以钻孔为中心的气压等值面，距离抽采钻孔越远的区域煤层瓦斯流速越小，气压下降速率越低；（2）气体吸附性越强，抽采过程中的煤储层气压下降速率越低且持续时间越长；（3）煤储层温度的时间演化规律与气压基本一致，在抽采前期有显著的降低，在抽采后期受吸附态气体解吸吸热及热交换作用的影响，煤层温度出现先下降后小幅上升；（4）距离钻孔越近的区域气压下降量越大，煤层温度下降越明显，煤层所受有效应力越大，煤层变形量也越大；（5）抽采气体的吸附性越大，抽采所导致的煤层变形量越大。

A self-developed multi-field coupling physical simulation testing system was employed to investigate the gas pressure, coal temperature, the deformation and other parameters evolution characteristics of coal reservoir during the process of extracting different adsorption gas. The results demonstrate that the gas pressure of coal reservoir decreased rapidly at the early stage of extraction, and formed a gas pressure equivalent plane with the center of the drill hole. The gas flow rate and pressure drop rate declined with the increase of distance. The stronger ability of adsorption, the lower the gas pressure drop rate and the longer the duration. The time evolution law of coal reservoir temperature and the time evolution law of gas pressure were consistent. Coal reservoir temperature decreased significantly at the early stage. At the late stage of extraction, under the influence of desorption of the adsorbed gas and heat exchange, the coal bed temperature appeared to decrease initially and then increase slightly. The closer position from extraction drill hole, the greater the pressure drop, the more obvious the coal bed temperature decreased and the greater the amount of coal deformation. The stronger the ability of adsorption is, the greater the deformation of the coal caused by gas extraction.