873综放面采空区自燃发火“三带”的划分及模拟分析

根据朱仙庄煤矿873综放面采空区温度和气体成分的现场实测结果,利用氧气体积分数法划分出873综放面采空区自燃发火"三带"的分布范围。同时,介绍了自编的煤矿采空区自燃发火"三带"模拟软件,并利用该软件对873综放面采空区自燃发火"三带"进行了计算机模拟分析,根据两条风速等值线绘制了采空区自燃发火"三带"分布图。模拟结果与实测结果相吻合,表明该软件具有一定的实用性。最后还分析了各相关因素对采空区自燃发火"三带"范围的影响情况。

Partition and Simulation of Spontaneous Combustion Three-zone in Goaf at NO.873 Fully-Mechanized Face with Caving of Roof Coal

According to the autoptical results of the temperature and air ingredients in goaf at NO.873 fully-mechanized face with caving of roof coal in Zhuxianzhuang Coal Mine,then the spontaneous combustion three-zone in goaf on NO.873 fully-mechanized with caving of roof coal face was partitioned by the oxygen concentration method.At the same time,it is introduced that the simulation software for determining the spontaneous combustion three-zone in goaf which has been developed by the author,and it is used to simulate the spontaneous combustion three-zone in goaf at NO.873 fully-mechanized face with caving of roof coal,the chart of the spontaneous combustion three-zone was drawn on the basis of the two air velocity isograms,the simulation results are the same as the metrical results.Finally,the influence of some respect factors to the location of the spontaneous combustion three-zone is analyzed.