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社评“家族轮换”-梳理天下新闻

杭州地铁3号家族轮换线二期工程迎来关键突破 建设进度提速

来源: 腾讯新闻
2024-12-13 17:13:27

最佳回答

“家族轮换”杭州地铁3号家族轮换线二期工程迎来关键突破 建设进度提速

  中新家族轮换网杭州12月13日电(奚家族轮换金燕 蓝伊旎)据杭州地铁13日消息,杭州地铁四期工程建设过程迎来了关键性的突破:杭州地铁3号线二期星桥站至世纪大道站区间左线盾构完成铁路节点穿越,这也是杭州地铁四期工程首个完成铁路节点穿越的盾构区间,为下一步工程推进夯实了基础。

杭州地铁3号线二期工程星桥-世纪大道区间隧道。 杭州地铁 供图

  据了解,杭州地铁四期工程包含25个涉铁施工节点,面临着手续办理周期长、施工难度大等多重挑战。其中,3号线二期工程星桥站至世纪大道站区间全长约2.74公里,采用单圆盾构技术,隧道埋深介于10.5米至28.4米之间,需三次穿越沪昆铁路和宣杭铁路。

  杭州地铁3号线二期星桥站至世纪大道站区间左线盾构日前成功完成了285环管片拼装,盾构机顺利穿越铁路路基范围,这标志着杭州地铁四期工程首个铁路节点穿越工作圆满完成。此次穿越的最小埋深仅为16.5米,且地质条件为富水砂层,施工难度极高。

  在盾构穿越过程中,杭州市地铁集团及各参建单位通过精准控制掘进参数和严格进行地表监测,确保了掘进速度和出渣量的稳定可控。

  据悉,杭州地铁四期建设规划于2022年11月14日获得国家发改委批复,线路里程共计152.9公里,其中杭州市地铁集团负责建设3号线二期等7条(段)线路,约147公里,共80座车站。此次铁路节点的顺利穿越,不仅保障了3号线二期区间工程的安全稳步推进,同时为杭州地铁四期工程的后续涉铁施工积累了宝贵经验。(完)

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