摘要
采煤工作面采空区中积聚的高体积分数瓦斯受大气压力的影响或冒落顶板的挤压,使工作面风流中瓦斯体积分数急剧升高,造成重大安全隐患。鄂庄煤矿通过分析总结采空区瓦斯涌出的规律,采取了针对性防治措施,并取得了明显的效果。
The high density gas is influenced by the atmospheric pressure or squeezing of the falling roof. The gas density in the face air raises rapidly. The safe hidden trouble is made. The law of goaf gas outburst is summed up. The directed measures are adopted. The obvious effect is obtained.
出处
《煤炭技术》
CAS
2007年第12期67-68,共2页
Coal Technology