都汶公路高瓦斯隧道施工火源控制关键技术研究

安全控制是高瓦斯隧道监理工作的核心控制内容之一。都（江堰）汶（川）公路高瓦斯隧道断面大，施工倍受瓦斯危害困扰，安全控制难度巨大。而火源则是大断面隧道施工中引起瓦斯燃烧或爆炸的导火索，因而如何遏制火源便成为监理单位抓好安全控制的一大重点。但目前尚无具体先例、方法可循，相关隧道施工规范、监理规范也未对此作出明确的规定。文章通过都汶公路紫坪铺（原名董家山）隧道2005年“12·22”特大瓦斯爆炸事故后的火源监控工作实践，总结出了一套火源监控对策，这对今后类似高瓦斯隧道施工火源控制和推动安全监理技术进步具备较大的借鉴价值。

Study on key technology of fire source control for high-gas tunnel construction in Duwen highway

The safety control is one of core control contents in supervision work of high-gas tunnel. The section of high-gas tunnel in Dujiangyan-Wenchuan highway was big,the construction was greatly disturbed by gas hazard,and the safety control was quite difficult. The fire source was the blasting fuse of gas combustion or explosion during the construction of big section tunnel. So how to control fire source is one emphasis for the supervision organization to do a good job of safety control. But there were not prac...