摘要
为防止2-2-601工作面出现遗煤自燃现象,采用现场测试的方式进行采空区自燃“三带”分布规律的分析,根据分析结果可知,采空区进风侧、中部和回风侧氧化升温带的范围分别为110~165 m、103~156 m和88~137 m,结合工作面的赋存条件及开采特征,设计采空区防灭火方案为:封堵漏风+注氮降氧+黄泥灌浆,并在防灭火方案实施后进行采空区内CO含量的分析,以验证防灭火效果。结果表明:防灭火方案实施后,采空区内的CO含量最大值为20×10-6,含量在安全范围内,防灭火措施有效抑制了遗煤氧化,保障了采空区的安全。
In order to prevent the spontaneous combustion of coal in the 2-2-601 working face,the method of field test was used to analyze the"three-zone"distribution law of spontaneous combustion in the goaf.According to the analysis results,it can be seen that the air intake side,middle and return air of the goaf The side oxidation heating zone ranges from 110 to 165 m,103 to 156 m and 88 to 137 m,respectively.Combining the occurrence conditions and mining characteristics of the working face,the design of the fire prevention and extinguishing plan in the goaf is:blocking air leakage+nitrogen injection to reduce oxygen+yellow Mud grouting and analysis of CO content in the goaf after the implementation of the fire prevention plan to verify the fire prevention effect.The results show that after the implementation of the fire prevention plan,the maximum CO content in the goaf is 20×10-6,which is within a safe range.The fire prevention measures effectively inhibit the oxidation of the remaining coal and ensure the safety of the goaf.
作者
张建华
ZHANG Jianhua(Sanjiaohe Coal Mine,Huozhou Coal and Electricity Group,Hongdong041600,China)
出处
《煤矿现代化》
2021年第5期81-83,共3页
Coal Mine Modernization
关键词
采空区
防灭火
氧化升温带
注氮降氧
Goaf
fire prevention
oxidation temperature rise zone
nitrogen injection to reduce oxygen
