2021年9月16日上午，合肥轨道交通2号线东延线土建2标肥东火车站~寓酒路站盾构区间左线顺利贯通，这也是合肥轨道交通三期建设项目中首个实现双线贯通的隧道。
该区间左线全长873.1m，设计环数582环，历时78天完成接收。期间克服了区间360m小曲线半径、下穿定光河5.5米浅覆土河流等施工难点。
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