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公路连拱隧道 ,由于断面大、技术要求高、施工难度大 ,确定合理的施工方案和开挖方法 ,是确保隧道施工顺利实施的关键。
Due to the large cross-section, high technical requirements and large construction difficulty, the determination of reasonable construction schemes and excavation methods is the key to ensure the smooth implementation of tunnel construction.