高瓦斯公路隧道控制爆破技术

Controlled blasting technique of high-gas-emission road tunnel

针对在建的新中梁山隧道按高瓦斯隧道管理后的爆破施工难题,根据该隧道工程地质及水文条件,运用基础理论分析结合现场验证,确定了隧道开挖循环进尺、炸材选择、炮眼布置以及起爆方法等,充分保证了隧道开挖施工的安全稳定顺利进行。实践表明,瓦斯隧道爆破控制技术能够保证工程施工安全,可为类似工程提供借鉴和参考。

The new Zhongliangshan road tunnel is a high gas emission tunnel,and it is difficult to managing the blasting. Based on the engineering geologic condition of this tunnel, it combined the analysis of basic theory and field verification, and confirmed the cyclic tun- neling depth, the explosive material, the layout of the hole, the method of ignition, and so on. All this has ensured the safe construction of tunnel. Field application has shown that,this blasting technique can make the tunneling safe,and can provide a reference for similar project.