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“彩虹版gtv全球最好g平台”-译文小记

京津冀首条下穿彩虹版gtv全球最好g平台机场高铁盾构隧道顺利贯通

来源: 参考消息
2024-12-31 02:39:52

最佳回答

“彩虹版gtv全球最好g平台”京津冀首条下穿彩虹版gtv全球最好g平台机场高铁盾构隧道顺利贯通

  今天彩虹版gtv全球最好g平台(30日),随着“京滨协彩虹版gtv全球最好g平台同号”盾构机顺利抵达3号接收工作井,京滨城际铁路天津机场2号隧道首个盾构区间顺利贯通,成为京津冀地区高铁盾构隧道成功下穿运营机场的首例,为建设同类工程提供了成功案例。

  据了解,天津机场2号隧道全长8635米,其中盾构段长7510米,采用两台开挖直径13.8米的超大直径盾构机施工,是京滨城际铁路全线重点控制工程。隧道需穿越天津机场四条滑道及飞行区,涉及范围达700米。为确保机场正常运营,施工中沉降要求需控制在毫米级,技术难度极大。

  相关负责人表示,在盾构机方面,技术团队采用了信息化、智能化和可视化的技术,通过远程后方的操纵,可以达到盾构机前方施工后方指导的一个双重管控的目标。同步采用了深孔注浆加强型管片等一系列技术措施,来确保机场的既有运营和远期运营安全。在各项技术的指导下,达到日掘进27米、月掘进534米的掘进新纪录。

  在技术创新的保障下,在历经266天施工后,天津机场2号隧道首个盾构区间顺利贯通。据了解,京滨城际铁路全长97.217公里,设计时速250公里/小时,是“轨道上的京津冀”的重要组成部分。其中一期工程已于2022年建成通车,二期工程东丽至滨海新区段正在加速推进中。建成后,将与京唐、京津城际等多条线路联通,进一步完善京津冀区域路网结构,为京津冀地区群众提供更加方便快捷的出行服务。

  (总台记者 朱辛未 于恩泽)

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