当井下发生火灾、瓦斯和煤尘爆炸、煤与瓦斯或二氧化碳突出等灾害时,井下人员应立即佩戴自救器脱险,免于中毒或窒息而死亡。自救器有过滤式和隔离式两种。过滤式自救器实际是一种小型的防毒面具,它能吸收空气中的一氧化碳;隔离式自 When a fire, gas and coal dust explosion, coal and gas or carbon dioxide prominent disasters, underground personnel should immediately wear self-rescue device out of danger, from poisoning or suffocation and death. Self-rescuer has both filter and isolation. Self-help filter is actually a small type of gas masks, which can absorb carbon monoxide in the air; isolated from