中厚煤层超长面采空区自燃规律研究

Research on coal spontaneous combustion rule in extra-long mining face with medium-thick seam

通过埋管的手段得到采空区的气体成分变化,同时收集多组工作面的气体成分、日回采距离等参数。结合煤样实验结果和现场数据分析,利用sufer-8软件对采空区的氧浓度和漏风强度进行模拟,运用煤自燃危险区域判定理论,划分和计算出采空区内的自燃"三带"和工作面的安全推进速度,为防治煤层自燃工作奠定了基础,保障矿井的安全生产。

Based on the experimental results of coal sample and field data such as gas components changes and mining distance per day, the paper simulated the oxygen concentration and air leakage intensity in goaf and determined the coal spontaneous combustion ＂three zones＂ of goaf and face safety advancing speed combined by using decision theory of coal spontaneous combustion zone.