山岭公路隧道进洞施工方案浅析

Excavating tunnel construction plan analysis for mountain ridge highway tunnel

进洞、出洞是隧道施工工况最复杂,也是质量、安全隐患最多的地段。合理选择进洞方案,借助一些辅助施工措施,自然进洞,能有效避免刷坡拉槽引发的山体边仰坡失稳,大大降低洞口防护工程建设成本,保护生态环境。

Excavating and exiting tunnel are the most complicated sites in the tunnel construction conditions, while they are also the site of the most hidden dangerous in quality and safety. If we properly choose the plan of excacating tunnel , have the aid of some subsidiary construction measures and excavate naturally runnel , we can effectively avoid the [instability of the mountain slope evoked by brushing slope and pulling slot, consumedly decrease the engineering construction cost of tunnel protection and protect ecosystem environment.