为执行《煤矿安全规程》有关通风、瓦斯部分的规定要求,接受汪家寨煤矿因没有正确使用瓦斯自动检测报警断电仪(下称断电仪)而发生瓦斯爆炸事故的教训,我们采用了如图1所示的线路,实现了掘进工作面风、电、瓦斯闭锁。本线路具有如下功能。1、掘进工作面迎头瓦斯超限或工作面回风流中瓦斯超限时,本线路均能按预定要 In order to implement the regulations of ventilation and gas of “Coal Mine Safety Regulations” and accept the lessons of the gas explosion accident occurred in Wangjiazhai Coal Mine due to the failure to properly use the gas automatic detection alarm power-off device (hereinafter referred to as the power interruption meter), we adopted As shown in Figure 1 of the line, to achieve the face of the tunneling wind, electricity, gas lock. This line has the following functions. 1, heading face gas overhang or face back to the gas flow in the overrun, the line can be scheduled to be