基于温度和O_2浓度的采空区“三带”分布规律研究

Research on the distribution regularity of three zones in goaf based on temperature and density of O_2

崔家寨煤矿井下采空区自然发火严重,为了掌握该矿采空区三带分布规律,利用热电偶测量采空区的温度变化规律,同时利用束管测定采空区的气体变化规律,通过分析采空区温度、O2浓度与工作面推进度间的关系,确定了所观测工作面采空区"三带"的分布范围,对所观测工作面在不同推进度下的采空区温度变化进行了数值模拟研究,为预防采空区自然发火提供了理论指导。

Every coal seam of Cuijiazai coal mine belongs to the spontaneous combustion coal seam and many spontaneous com- bustion have taken place during mining. In order to strengthen fireproofing management and understand the natural oxidation of the gob area, the thermocouple technology was used to observe the change of of the E12604 working face. At the same time, the beam tube monitoring and measuring system was used to observe the air contents of E12604 gob area. The basic rule of temperature and density of O2 in gob area was gotten. The numerical simulation was used to study the relationship between the temerture and advancing speed. The conclusion was used to guide the production and good result was obtained.