关于挂子岩煤矿“12• 17 ”的煤与瓦斯突出事故仿真分析

oal and gas outburst is a very complicated phenomenon of dynamics in coal mines, and it is not only one of the most serious calamities that threaten the safe yield. The flow of gas in the mine ventilation system is a difficult problem in science that needs thrashed out urgently during gas outburst. In allusion to the "12.17" serious coal and gas outburst accident of Guaziyan coal mine in Hunan Province, a detailed simulation of the mutation process of mine ventilation system during gas outburst disaster period is done by using theory of ventilation network with sources and numerical simulation technology. Three changing processes, namely outburst overflow、natural flow and ventilation downstream will occur in the ventilation system after outburst. Mine ventilation system disorder will occur during coal and gas outburst period. In addition, the gas natural ventilation pressure caused by gas detention may lead to airflow disorder of reversion in some local circuits, and may enlarge the affected range of gas, or lead to the delay and detention of gas discharge. It has great value in the secondary disasters caused by coal and gas outburst accident.