摘要
近距离煤层群开采过程中邻近层之间产生大量相连通的裂隙,采场情况十分复杂,并伴随不同煤层间因通风引起近距离煤层群漏风,在研究漏风规律过程中,煤矿工程现场煤层群采空区漏风规律与单煤层开采漏风规律有很大区别,开采过程中采空区气体的分布规律也更加复杂,给采空区煤层自燃预测预报带来了困难。通过理论分析、现场监测相结合的方法研究近距离煤层群开采过程中上覆煤层采空区气体变化规律,为制定采空区煤自燃预防措施提供科学依据。
Connecting cracks appearing between adjacent layer in closed distance seam group, with complex mining situation and air leakage of close coal seam group caused by ventilation in different coal seam, in the study of air leakage law, law of goal air leakage were coal mine coal seam group of field engineering is different from single coal seam mining law of air leakage, with complex distribution law of goaf air and difficulty of goaf coal seam spontaneous combustion prediction.Theoretical analysis combined with field monitoring was used to study overlying coal goaf gas change rule in mining of closed distance coal seam group, which provided scientific basis for goaf coal spontaneous combustion prevention.
出处
《煤炭与化工》
CAS
2015年第6期17-19,23,共4页
Coal and Chemical Industry
基金
山西省科技攻关计划(20120321006)
关键词
煤层群
漏风
煤自燃
采空区
气体分布规律
coal seam group
air leakage
coal spontaneous combustion
goaf
gas distribution
