大倾角综放面采空区自燃“三带”分布规律研究  

Research on Spontaneous Combustion “Three zones” Distribution Regularity in Goaf of Full-mechanized Caving Face in Large Dip Seam

作　　者：何俊[1] 牛帅[1] 陈亮[1] 

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454003

出　　处：《煤炭技术》2014年第9期54-56,共3页Coal Technology

摘　　要：为研究大倾角综放工作面采空区自燃"三带"分布规律,首先建立了采空区流场的数学物理模型,然后利用Fluent对采空区自燃"三带"分布进行了模拟,并分析了不同风量对采空区自燃"三带"范围的影响。结果表明:采空区自燃"三带"具有三维空间分布特性;进、回风侧氧气浓度下降趋势不同,且进风侧自燃危险区域靠近采空区中后部,回风侧自燃危险区域紧靠工作面上隅角;单一改变风量大小对氧化带宽度的变化影响较小。To study the distribution rule of ＂three zone＂ in goaf of fully-mechanized caving face in large dip seam,firstly,the mathematical-physical model of goaf flow field was established,and then spontaneous combustion ＂three zone＂ distribution in goaf was simulated with the use of Fluent.Based on these data,spontaneous combustion ＂three zones＂range under different air volume was analyzed.The results show that spontaneous combustion ＂three zone＂ had three-dimensional spatial distribution characteristic; Oxygen concentration downtrend was different on the intake side and return side.Simultaneously,the goaf spontaneous combustion dangerous area of the intake side was near the middle and posterior,on the contrary,the area on the return side was close to the upper corner; Oxidized zone width was almost never affected by only changing air volume.

关 键 词：大倾角 采空区 自燃“三带” 分布 

分 类 号：TD75[矿业工程—矿井通风与安全]