辛置煤矿10-428B综采工作面采空区自燃“三带”分布规律研究

Study on the“three zones”spontaneous combustion distribution in the goaf of 10-428b fully mechanized face in Xinzhi Mine

为充分掌握10-428B综采工作面采空区自燃“三带”的分布规律,通过分析采空区自燃“三带”的划分原理,对工作面采空区自燃“三带”的分布情况进行数值模拟,在10-428B工作面现场采用取样试验和气体监测的手段,进行指标性气体和采空区氧浓度的实测分析,进而得出采空区自燃“三带”的分布规律,综合数值模拟和现场实测结果确定采空区“自燃”三带的分布规律。结果表明,10-428B工作面采空区“三带”分布规律为:散热带0~28 m,氧化带28~52 m,窒息带距工作面大于52 m。

In order to fully grasp the distribution law of the"three zones"of spontaneous combustion in the goaf of the 10-428B fully mechanized mining face,by analyzing the principle of the"three zones"of spontaneous combustion in the goaf,the analysis was carried out by numerical simulation.The sampling test and gas monitoring methods were used at the 10-428B working face to carry out the actual measurement and analysis of the indicator gas and the oxygen concentration field in the goaf.The comprehensive numerical simulation and field measurement results determined the distribution pattern of the three zones of"spontaneous combustion"in the goaf.The results showed that the"three-zone"distribution pattern of the goaf of the 10-428B working face,the heat dissipation zone was 0~28 m,the oxidation zone is 28~52 m,and the asphyxia zone was greater than 52 m from the working surface.