近日，云南大(理)瑞(丽)铁路施工现场传来喜讯，位于芒市的三台山隧道2号斜井至出口顺利贯通。
据悉，三台山隧道出口于2016年6月进洞施工，历经59个月的艰苦奋斗完成了1180米。此次三台山隧道出口的顺利贯通，意味着项目建设取得了阶段性胜利。
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