摘要
在总结店坪煤矿9-204和9-211回采工作面通风、瓦斯、CO、CO2现场实测数据的基础上,系统分析了W形和U形通风方式工作面漏风量、瓦斯浓度和气体成分的分布特征。研究表明:W形通风方式工作面漏风程度低,不会导致工作面上、下隅角瓦斯集聚;无论哪种通风方式9#煤层采空区均未发生自燃,采空区距工作面50 m位置均进入氧化带;U形通风方式采空区氧化程度略高于W形通风方式。
Based on the field measured data of ventilation, gas, carbon monoxide and carbon dioxide in 9-204 and 9-211 mining faces of Dianping coal mine, it is systematically analyzed that the distribution characteristics of air leakage, gas concentration and gas composition in W-shaped and U-shaped ventilation mining faces. The results show that the low leakage degree of W-shaped ventilation isn′ t lead to gas accumulation in face end. There are not spontaneous combustion in the goaf of any ventilation modes.The goaf of 50 m away from the working face belong to the oxidation zone;the oxidation degree of U-shaped ventilation is slightly higher than that of W-shaped ventilation.
作者
苏夏收
郭临明
SU Xia-shou;GUO Lin-ming(Lvliangshan Coal and Electricity Co.,Ltd.,Huozhou Coal and Electricity Group,Lvliang 033000,China)
出处
《煤炭技术》
CAS
2020年第4期146-148,共3页
Coal Technology
关键词
W形通风
U形通风
采空区
三带划分
W-shaped ventilation
U-shaped ventilation
goaf
distribution of three zones
