砟子矿共四对井口,均属三超级瓦斯井口,煤种为主焦煤和气肥煤,煤尘爆炸指数一般在25～40%,均属有煤尘爆炸危险的矿井。几年来矿党委认真贯彻了党的安全生产方针和(70)71号文件,广大职工认真的执行有关防止瓦斯渗出的具体措施,因而14年来消灭了瓦斯事故,保证了年年提前完成国 There are four pairs of wellheads in Zaizi Mine, which are all three super-gas wellheads. Coal is mainly coking coal and gas-fat coal with the coal dust explosion index generally ranging from 25% to 40%, all of which are coal mines with the danger of coal dust explosion. Over the past few years, the Party committee of the coal mine has conscientiously implemented the party’s safety production guidelines and (70) Document No. 71. The broad masses of staff and workers earnestly implemented concrete measures to prevent gas seepage. Thus, the gas accident was eliminated in 14 years,