根据示踪气体在煤岩裂隙中的运移过程,借助于脉冲释放示踪气体扩散的原理,得到三维弥散方程和一维的解析解;通过现场试验分析获得:接收到双示踪气体浓度都是先由小逐渐增大,而后又逐渐减小,与时间呈正态分布关系。结果表明:气体在煤岩裂隙中的流动遵循气体弥散流动规律。 According to the migration process of tracer gas in the fracture of coal and rock, the three-dimensional dispersion equation and one-dimensional analytical solution are obtained by the principle of pulse-released tracer gas diffusion. Through the field test and analysis, Is the first small gradually increased, then gradually reduced, and the time was normal distribution. The results show that the gas flow in coal and rock fractures follows the law of gas dispersion flow.