软岩隧道机械破碎开挖施工探讨

Discussion on the Construction of Soft Rock Tunnel Excavation

民小公路白马寺隧道由于离白马寺千年文物距离较近,为保护文物古迹、尊重民族信仰,以及促进民族团结,隧道开挖放弃原设计的爆破施工工艺,改为机械破碎施工工艺。实践证明,该方案无需使用火工品作业,降低了洞内安全风险,且对围岩扰动较小,超欠挖好控制,对类似工程有一定的参考价值。

The White Horse Temple tunnel on Min-xiao Highway due to its close to Millennium heritage,in order to protectcultural relics,respect the national faith,and promote national unity,tunnel excavation adopted the mechanical crushingconstruction technology instead of the original design of blasting technology.lt was proved that this method without initiatingexplosive device reduces the security risk,causes less disturbance to the surrounding rock,and provides well control ofoverbreak, which provides certain reference for similar projects.