浅析煤层瓦斯单向流动理论的应用  

Discussion on the application of one-way flowing theory about gas flow in coal seam

作　　者：龙威成[1] 孙四清[1] 牛大伟[2] 龙亚平[1] 

机构地区：[1]煤炭科学研究总院西安研究院,陕西西安710054 [2]中原工学院信息商务学院,河南郑州450007

出　　处：《陕西煤炭》2011年第5期88-90,共3页Shaanxi Coal

摘　　要：通过分析煤层渗透率与煤层有效应力的关系,建立煤层渗透率为变量时煤壁瓦斯单向流动数学模型,推导出煤壁瓦斯涌出量方程式。并以某矿为例,建立煤壁瓦斯涌出量与有效应力、暴露时间的关系并做曲线图,结果表明,以渗透率为变量进行煤层瓦斯流动研究更符合现场实际。By analyzing the relation of rate of coal permeation and effective stress,connecting the continuity equation of gas flow,equation of motion,gas equation of state and gas content equation,the paper built the mathematic model of one-way gas flowing in coal seam,deduced the equation of gas emission in coal wall.For an example,the relation between gas emission and effective stress and the time of exposure were built and the curve diagram was drawn.The result indicates that it is more consistent with the actual studying gas flow using the variable rate of coal permeation.

关 键 词：单向流动 煤壁瓦斯涌出 煤层渗透率 

分 类 号：TD712.51[矿业工程—矿井通风与安全]