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Back西渝高铁四方山隧道顺利贯通
西渝高铁四方山隧道顺利贯通
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中国新闻网12 hours agoOther2 min readChinaView translation

西渝高铁四方山隧道顺利贯通

Quick Look

西渝高铁四方山隧道于10月14日顺利贯通,隧道全长9485米,地质条件复杂。中铁十一局采用全工序机械化施工,创新多项工艺,已形成3项省部级工法和20余项专利。西渝高铁是京昆通道和包(银)海通道的重要组成部分,建成后将与多条干线铁路互联互通,完善中西部高速铁路网络。

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Why It Matters

西渝高铁是中国“八纵八横”高速铁路网中京昆通道、包(银)海通道的重要组成部分。西安至安康段已于9月28日开通运营。

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中新网重庆10月14日电 (张旭)京昆高速铁路西昆有限公司10月14日发布消息称,当日,由中铁十一局承建的西安至重庆高速铁路(以下简称“西渝高铁”)重难点工程四方山隧道顺利贯通,为全线按期建成通车奠定坚实基础。

四方山隧道位于重庆市开州区境内,全长9485米,地质条件复杂,穿越滑坡体、采空区、老窑积水区、有害气体带及岩溶水发育区,存在高地应力、边仰坡顺层等不良地质,施工组织和安全管控难度大。

图为西渝高铁四方山隧道内景。郑烨辉 摄

在该隧道建设中,中铁十一局推行全工序机械化施工,在掌子面、仰拱、二衬三大作业区形成“7+1+4”机械化配套矩阵:掌子面配置三臂凿岩台车、多功能装药台车等7类设备,仰拱作业采用56米大跨度移动栈桥,二衬作业引入智能衬砌台车、钢筋防水板自动铺挂台车等4类设备,实现开挖、支护、衬砌全流程机械化协同。

据中铁十一局西渝高铁十五标项目总工程师蒲昆介绍,建设过程中,团队创新“三榀铰接式钢拱架整体机械化安装”工艺,立架单循环时间由3小时缩短至2小时,人员投入减少一半;研制的钢筋防水板自动铺挂台车可完成12米衬砌环向120根双层钢筋整体提升与精准布设,并具备宽幅防水板铺设、自动焊接功能,标准作业人数减少30%,劳动强度明显降低。

目前,中铁十一局依托该隧道建设已形成3项省部级工法、20余项专利,并参与编制《西昆高铁隧道机械化创新实践与变革》《铁路隧道全工序机械化设计施工技术规程》。

资料图为西渝高铁四方山隧道施工现场。郑烨辉 摄

西渝高铁是中国“八纵八横”高速铁路网中京昆通道、包(银)海通道的重要组成部分。西渝高铁西安至安康段已于9月28日开通运营。西渝高铁康渝段建设正全速推进,已贯通隧道67座,工程整体全面进入无砟轨道施工、站房建设及四电工程安装等剩余工程的攻坚阶段。

西渝高铁建成通车后,将与成渝高铁、郑渝高铁、渝昆高铁等多条干线铁路互联互通,进一步完善中西部地区高速铁路的路网结构,极大便利沿线民众出行。(完)

Open Questions

  • 西渝高铁康渝段何时能够全线贯通?
  • 机械化施工在其他隧道中的推广情况如何?
  • 四方山隧道贯通后,后续无砟轨道施工进展如何?

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This article was originally published by 中国新闻网.

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