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连拱隧道中导洞开挖,一般只理解为为浇注中墙钢筋混凝土提供必要空间,对其核实隧道设计施工图中的地质资料,指导正洞施工具有重要的超前地质预报意义重视不足。本文以J潭一号隧道和M山隧道两个实例进行论述。
The excavation of the pilot tunnel in the multi-arch tunnel is generally only understood as providing the necessary space for the pouring of the reinforced concrete. It is not enough to verify the geological data in the tunnel design and construction drawings and guide the construction of the normal tunnels. This article discusses J Tan 1 Tunnel and M Mountain Tunnel.