摘要
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。
On the basis of coal seam having outcrop of coal seam and outlet on ground,the method for calculating coalbed gas pressure from the one-dimensional stable gas flow equation by considering deeply the influence of in-situ stress gradient and geothermal temperature is presented. In some mine, the theoretically computing and measuring results of coalbed gas pressure show that the in-situ stress gradient and the geothermal temperature have important influence on the calculation of coalbed gas pressure, and if the factors are drew into the calculation of coaled gas pressure,it will make the results much more accurate.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
1999年第5期95-98,共4页
Journal of Chongqing University
关键词
煤层瓦斯应力
渗流方程
地应力梯度
地温
coalbed gas pressure
gas flow equation
in-situ stress gradient
geothermal temperature
