瓦斯抽放条件下采空区自燃三带分布规律的模拟研究

Simulation study on the Distribution of three zones of spontaneous Combustion in Goaf under the condition of Gas drainage

本文在分析采空区空间特性的基础上,应用传热传质学理论建立了采空区抽放条件下的数学模型,利用计算机模拟技术对不同瓦斯抽放条件下的采空区气体组分流场进行了三维可视化模拟,通过综合对比分析得出了采空区气体场的变化规律以及采空区自燃带与抽放条件之间的关系。研究成果对于采空区瓦斯抽放的合理布置和以及采空区防灭火具有一定的指导意义。

Based on the analysis of the spatial characteristics of the goaf,this paper establishes a mathematical model for the extraction conditions of the goaf with the theory of heat and mass transfer,and uses the computer simulation technique to carry out a three-dimensional visualization of the gas group distributary field in the goaf under the conditions of different gas drainage.[this paper is subject to the Yanzhou Coal Mining Co"pulverized coal slurry liquid property.The change of gas field in the goaf and the relationship between the spontaneous combustion zone and the pumping conditions in the goaf are obtained through the comprehensive comparison and analysis.The research results have certain guiding significance for the rational arrangement of gas drainage in the goaf and the fire prevention and extinguishing in the goaf.