这是3月26日在铁建重工长沙第二产业园拍摄的“强基号”掘进机（无人机照片）。
当日，由杭州市水务集团、铁建重工、中铁十八局等单位联合打造的我国最大直径土压平衡双护盾组合式隧道掘进机“强基号”在长沙顺利下线。据了解，“强基号”最大开挖直径达12.68米，整机长107米，总重量3500吨，未来主要承担扩大杭嘉湖南排后续西部通道工程南段12.28公里输水隧洞的掘进任务。
新华社记者陈思汗摄
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