煤层巷道周围瓦斯排放宽度研究

Study on the Gas Drainage Width Around Seam Roadway

摘要: 根据瓦斯渗流方程、煤层瓦斯流动方程、理想气体状态方程、瓦斯含量方程,建立了煤层瓦斯渗流方程,利用傅里叶变换对方程进行了求解。同时,采用Comosol Multiphysics数值模拟软件对煤层巷道的极限排放宽度进行了数值模拟。结果表明:随着自然排放时间的增加,巷道的极限排放宽度在增加。

Abstract: According to the gas seepape equation,coal seam gas flow equation,the state equation of ideal gas and the gas content equation,it established the coal seam gas seepage equations,and solved them with Fourier transformation.At the same time,the Comosol Multiphysics numerical simulation software was used to simulate the limit discharge width of the seam roadway.The results showed that the limit discharge width of roadway was increasing as the increase of the natural discharge time.