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介绍旦架哨隧道掘砌施工 ,在软岩、大跨复杂工程地质条件下 ,采用扩大弧形导坑分部开挖法 ,灵活运用传统施工工艺 ,取得了良好的综合效益。
The construction of Danjian sentinen tunnel excavation is introduced. Under the conditions of complex engineering geological conditions of soft rock and long span, the excavation method using the enlarged arc-shaped pilot excavation and the flexible application of traditional construction techniques have achieved good comprehensive benefits.