矿井间断通风瓦斯积聚机理及防治研究
付超
（霍州煤电集团山西汾河焦煤股份有限公司，山西 洪洞 041602）
摘要： 以汾河焦煤煤矿通风机倒机过程中间断通风造成的瓦斯积聚现象为切入点，通过FLAC3D 数值模拟软件得到
不同进风速率下，进风巷道瓦斯体积分数范围为0.38％耀1.04％，工作面瓦斯体积分数范围为0.42％～1.14％，回风巷道
瓦斯体积分数范围为0.65％～1.01％。通过现场研究可知，对通风系统的改进，降低了挡风作用，有效改善了间断通风下
瓦斯积聚的现象，具有一定的现实意义。
关键词： 间断通风；瓦斯积聚；数值模拟
中图分类号： TD823.7     文献标志码： A     文章编号： 2095-0802-(2020)10-0034-03
Study on Mechanism and Prevention of Gas Accumulation in Mine Intermittent Ventilation
FU Chao
(Fenhe Coking Coal Co., Ltd. of Shanxi, Huozhou Coal Electricity Group, Hongtong 041602, Shanxi, China)
Abstract: Taking the gas accumulation phenomenon caused by the intermittent ventilation of the ventilation fan in the coal mine
of Fenhe Coking Co., Ltd. as the starting point, by using the FLAC3D numerical simulation software, this paper obtained that the
gas volume fraction range of the inlet tunnel was 0.38%-1.04%, the gas volume fraction in working face ranges from 0.42% to
1.14%, and the gas volume fraction in return air tunnel ranges from 0.65% to 1.01%. Through field research, it can be known that
the improvement of the ventilation system reduces the windshield effect and effectively improves the phenomenon of gas
accumulation under intermittent ventilation, which has certain practical significance.

Key words: intermittent ventilation; gas accumulation; numerical simulation