煤层瓦斯抽采异常与优化
郭艳飞，李学臣
（焦作煤业（集团）有限责任公司科学技术研究所，河南 焦作 454000）
摘要： 针对焦煤公司在钻孔工程量基本保持稳定的情况下，瓦斯抽采量、利用量却呈现下降趋势的现象，系统分析
了钻孔抽采瓦斯体积分数随时间的变化规律，确定了瓦斯抽采异常的影响因素，指出统筹考虑抽采钻孔布置间距、施工
顺序、施工间隔，合理控制抽采钻孔冲孔煤量，才能有效提高煤层瓦斯治理效果，实现对瓦斯的充分抽采利用，缩短治
理周期，同时降低治理成本的目的。
关键词： 瓦斯抽采；异常；影响因素
中图分类号： TD712     文献标志码： A     文章编号： 2095-0802-(2020)09-0023-03
Abnormity and Optimization of Coal Seam Gas Drainage
GUO Yanfei, LI Xuechen
(Institute of Science and Technology, Jiaozuo Coal Industry (Group) Co., Ltd., Jiaozuo 454000, Henan, China)
Abstract: In view of the fact that the amount of drilling work in Jiaozuo Coal Industry (Group) Co., Ltd. was basically stable, but
the amount of gas drainage and utilization showed a downward trend, this paper systematically analyzed the variation law of gas
volume fraction in borehole drainage with time, determined the influencing factors of abnormal gas drainage, and pointed out that
only by considering the layout spacing, construction sequence and construction interval of drainage boreholes as a whole, and
reasonably controlling the amount of coal flushed by drainage boreholes, could the effect of coal seam gas control be effectively
improved, achieving the purpose of full gas drainage and utilization, shortening the treatment cycle, and reducing the control cost.

Key words: gas drainage; abnormity; influencing factors