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对长凼子隧道开挖前后围岩的工程地质和水文地质进行了详细分析,找出了隧道掘进困难的原因,提出了隧道穿越突泥涌水岩溶区的施工方案。
The engineering geology and hydrogeology of the surrounding rock before and after excavation in Changdizi Tunnel are analyzed in detail, the reason of tunneling difficulty is found, and the construction scheme of tunnel crossing the karst area of the muddy water is proposed.