近距离煤层群开采上层采空区气体变化规律  

Gas Variation Law of Upper Goaf Mining in Closed-distance Seam Groups

作　　者：张立海 吴玉国[2] 张超[2] 

机构地区：[1]中煤平朔集团有限公司,山西朔州036000 [2]太原理工大学矿业工程学院,太原030024

出　　处：《山西煤炭》2015年第3期15-18,共4页Shanxi Coal

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导致的煤层间漏风,致使采空区漏风规律与单层开采有很大区别,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。因此通过理论分析并结合现场监测结果研究近距离煤层群开采本层及上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。A large amount of jointed fractures between adjacent seams occur in the mining of closed-distance seam group. Complicated mining field, accompanied with air leakage caused by ventilation between different layers, leads to the different air leakage rule from single seam mining. In addition, the gas distribution of goaf is more complex and makes it difficult to alarm spontaneous combustion. The paper studies the gas rules of the seam and the upper seam for the closed-distance seam groups based on the theoretical analysis and monitoring results, which could provide a scientific basis to prevent the coal spontaneous combustion in goaf.

关 键 词：近距离煤层群 漏风 煤自燃 采空区 气体分布规律 

分 类 号：TD752.2[矿业工程—矿井通风与安全]