王庄煤业3801工作面采空区自燃三带划分研究

Study on Three Zones of Spontaneous Combustion in Goaf of 3801 Working Face in Wangzhuang Mining Industry

针对王庄煤业3801工作面采空区遗煤自燃发火防治,通过理论分析确定使用O 2作为煤自燃预报指标气体来判断采空区自燃情况,根据现场监测结果确定了3801工作面采空区自燃三带分布范围。进风侧:0~20 m为散热带,20~125 m为自燃带,大于125 m为窒息带;回风侧:0~10 m为散热带,10~60 m为自燃带,大于60 m为窒息带。并计算出了工作面最小安全推进度为1.1 m/d。该研究结果为矿井防灭火工作提供了科学依据。

Aimed at Wangzhuang Mining 3801 working face of coal spontaneous combustion prevention and control,through the theoretical analysis that determine to use O 2 as coal spontaneous combustion prediction to judge the goaf spontaneous combustion index gases,according to the result of field monitoring the 3801 working face goaf spontaneous combustion three zones distribution range is determined.Inlet wind side:0~20 m is scattered tropical zone;the spontaneous combustion zone is 20~125 m,and the asphyxiation zone is greater than 125 m.Return side:0~10 m is scattered tropical zone;the spontaneous combustion zone is 10~60 m,and the asphyxiation zone is greater than 60 m.The minimum safety propulsiondegree of the working face is calculated as 1.1 m/d.The research results provide a scientific basis for mine fire prevention work.