巷道高浓度瓦斯运移扩散规律的研究  

Study on Laws of High Concentration Gas Movement and Diffusion in Roadway

作　　者：赵芳[1] 程国强[1] 孙业强[1] 尚永会[1] 

机构地区：[1]山东科技大学矿业与安全工程学院,山东青岛266590

出　　处：《煤炭技术》2016年第1期193-196,共4页Coal Technology

基　　金：国家自然科学基金资助项目(51274133;51474137);瓦斯灾害监控与应急技术国家重点实验室开放课题(2012CQCCTEG04KF01)

摘　　要：利用FLUENT软件建立了平直巷道物理模型,设立了与突出瓦斯环境相符的边界条件和初始条件,对突出后的高浓度瓦斯在巷道中的运移扩散进行了数值模拟。模拟得到了瓦斯浓度的衰减规律,确定了浓度1%的瓦斯运移扩散时时间与截面位置的对应关系。考虑初始瓦斯浓度及巷道风速对瓦斯运移扩散的影响,建立了初始瓦斯浓度和巷道风速影响下的瓦斯浓度峰值与截面位置关系表达式。Flat roadway physical model was established through FLUENT software. Boundary conditions and initial conditions applying to the environment of gas outburst was set up. Simulated the movement and diffusion of gas after gas outburst. Get the attenuation law of gas concentration and determine corresponding relation of time and position when the gas is moving and diffusing that the gas concentration is 1%. The relational expression of gas concentration peak and section position under the influence of initial gas concentration and the roadway wind speed is set up when considering the influence of initial gas concentration and roadway wind speed on the spread of gas migration.

关 键 词：瓦斯 运移扩散 FLUENT软件 

分 类 号：TD712[矿业工程—矿井通风与安全]