近距离煤层群瓦斯异常区域防治
施永威^1，2，陈亮^1，2，罗靖^1，2
（1. 瓦斯灾害监控与应急技术国家重点实验室，重庆 400037；2. 中煤科工集团重庆研究院有限公司，重庆 400037）
摘要： 为了实现对近距离煤层群坚硬顶板工作面瓦斯赋存异常区域瓦斯的有效防治，开展了近距离煤层群工作面瓦斯
涌出规律研究，考察了坚硬顶板工作面顶板“三带”分布规律，优化了走向高位钻孔参数，建立了近距离煤层群坚硬顶
板工作面“本煤层瓦斯抽排+采空区瓦斯抽采+邻近层瓦斯抽采+其他治理瓦斯措施”的瓦斯防治模式。经采用，工作面
瓦斯涌出量由15.78 m³/min 降至11.1 m³/min，平均值由10 m³/min 降至6.5 m³/min，；工作面风量由1 800 m³/min 降至
1 100 m³/min，瓦斯治理效果明显。
关键词： 近距离煤层群；坚硬顶板；瓦斯涌出量；瓦斯防治
中图分类号： TD712⁺.6     文献标识码： A     文章编号： 2095-0802-(2021)06-0017-03
Prevention and Control of Gas Abnormal Areas in Close Coal Seam Groups
SHI Yongwei^1,2, CHEN Liang^1,2, LUO Jing^1,2
(1. State Key Laboratory of Gas Disaster Monitoring and Emergency Technology, Chongqing 400037, China; 2. CCTGE
Chongqing Research Institute, Chongqing 400037, China)
Abstract: In order to realize the effective prevention and control of gas in the gas abnormal area in working face with hard roof
in close coal seam groups, this paper carried out study on the gas emission law of the working face in the close coal seam groups,
investigated the roof "three-zone" distribution law of the working face with hard roof, optimized strike high drilling parameters,
and established a gas control model of "local coal seam gas drainage + goaf gas drainage + adjacent layer gas drainage + other gas
control measures" in the working face hard roof in close coal seam groups. After adoption, the gas emission from the working face
was reduced from 15.78 m³/min to 11.1 m³/min, and the average value was reduced from 10 m³/min to 6.5 m³/min; the air volume at
the working face was reduced from 1 800 m³/min to 1 100 m³/min. The gas treatment effect is obvious.

Key words: close coal seam groups; hard roof; amount of gas emission; gas prevention and control