煤体瓦斯初期扩散简化模型  

Methane Diffusion Model in Coal Particles in Early Stage

作　　者：刘凯[1] 蘧艳峰[1] 金潮[1] 游国强[1] 杜旭红[1] LIU Kai, QU Yan-feng, JIN Chao, YOU Guo-qiang, DU Xu-hong(China Institute for Radiation Protection, Taiyuan 030006, Chin)

机构地区：[1]中国辐射防护研究院,太原030006

出　　处：《煤炭技术》2018年第4期168-170,共3页Coal Technology

摘　　要：针对目前瓦斯扩散理论模型和经验公式的有限适用范围,在假设煤粒瓦斯初期扩散系数近似恒定的基础上,根据球坐标系表示的Fick第二定律,建立了含瓦斯煤初期扩散模型,运用数学物理方法推导出了其解析解,并进行实验验证。In view of the applying limitation for diffusion models and empirical formulas, according to the Fick＇s second law in the spherical coordinate system, the mathematic model was established, and its analytical solution was obtained by mathematical and physical method, and experimental verification.

关 键 词：瓦斯 扩散 数学模型 简化式 

分 类 号：TD712[矿业工程—矿井通风与安全]