这是“领航号”盾构机内隧道管片传送口（12月16日摄）。12月16日，我国自主研制的世界最大直径高铁盾构机——崇太长江隧道“领航号”掘进突破10000米大关，越江隧道工程取得阶段性进展，为全线贯通奠定坚实基础。崇太长江隧道是沪渝蓉高铁东段线路上海至南京至合肥段控制性工程，连接上海市崇明区和江苏省太仓市，全长14.25公里，设计时速350公里，采取单洞双线设计。新华社记者 方喆 摄
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