关键词: 瓦斯工区, 瓦斯等级, 四位一体, 防突措施

Abstract: The development of gas tunnels is comprehensively analyzed in recent years in Guizhou, combining with the gas accidents occurring in tunnel construction at domestic and international. Based on the prevention and control of coal and gas outburst in coal mine, the outburst prevention technology system suitable for gas tunnel be put forward, through the implementation of regional and local “four in one” comprehensive outburst prevention measures on a gas outburst tunnel in Guizhou, the tunnel achieved safe uncovering of coal and no gas overrun and outburst occurred; When the tunnel construction institutions gas disaster prevention and control strength is insufficient, could cooperate with the qualification institution, which can strengthen the prevention of gas disaster in construction institutions, ensuring the effective implementation of double "four in one" comprehensive outburst prevention measures, achieving accurate prediction, effective measures, reliable inspection, adequate protection.