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针对煤层在地表有露头或出口的情况，根据煤层瓦斯渗流方程，提出了考虑煤层温度和地应力梯度变化的煤层瓦斯压力的计算方法。对某矿井煤层瓦斯的理论计算和实测结果表明：煤层温度和地应力梯度变化对煤层瓦斯压力有较大影响，对于深部开采煤层和高温矿井，考虑地温和地应力梯度的影响，将使所确定的煤层瓦斯压力值更准确。
According to the gas seepage equation of coal seam, a method to calculate the gas pressure of coal seam considering the change of coal seam temperature and the gradient of geostress is proposed. The theoretical calculation and measured results of the coal seam gas in a coal mine show that the change of coal seam temperature and geostress gradient have a great influence on the gas pressure of the coal seam. Considering the influence of geothermal stress gradient on deep coal seam and high temperature mine, The coal seam gas pressure value is more accurate.