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石家庄地铁5号线建和桥站至胜利大街站区间右线贯通!

  • 2026-08-30 00:15:56
石家庄地铁5号线建和桥站至胜利大街站区间右线贯通!

“钢套筒开仓!‘常山号’盾构机顺利出洞!”随着一声令下,一个巨大的钢环被缓缓起吊,覆盖着砂浆的盾构机露出真容。6月25日,石家庄地铁5号线一期工程建和桥站~胜利大街站盾构区间右线顺利接收,这是“钢套筒”施工法在石家庄地铁建设史上的首次“亮相”。

形象地来讲,钢套筒施工法就像是给盾构机在接收端穿上“外套”,以完成复杂条件下的盾构接收。在建设现场,区间右线出洞口上加装了直径6.9米、长11米的大型钢套筒。此时,盾构机刀盘已经精准稳妥地进入套筒内,随后将依次拆解钢套筒和盾构机,再一并吊出。而传统的盾构法施工时,盾构机会直接推到洞口接收架上。

胜利大街站以及建和桥站~胜利大街站区间均由中铁十四局承建。该区间盾构自建和桥站向胜利大街站始发,右线全长约1170米,与此同时区间左线也正在掘进中。接收端胜利大街站为深38米的地下五层车站,是河北省最深的地铁车站。接收端地下以富水卵石地层为主,卵石粒径大、土层孔隙率高、透水性极强,传统盾构接收工艺的橡胶帘布易被硬质卵石撕裂,端头注浆加固也无法彻底封堵渗水、涌砂风险。

中铁十四局石家庄地铁5号线05工区项目经理陈晓峰介绍,针对接收端复杂的地质与环境条件,我们项目团队制定了详尽的盾构专项施工方案。在接收端头,提前进行了地面深孔注浆加固,并创新应用“钢套筒密闭接收”技术。在接收过程中,技术人员利用高精度测量仪器对盾构机姿态进行了实时动态监测与微调,确保了盾构机精准“零偏差”进入接收钢套筒。建胜区间右线的顺利贯通标志着我们05工区完成了又一个重要关键节点,也为后续轨道铺设、机电安装等工序打开了作业面。

石家庄轨道集团工程部工程师张安琪介绍,胜利大街站是石家庄地铁5号线一期工程施工中的重大难点,施工难度远超常规车站。钢套筒施工法可形成密闭承压空间,全程维持土压平衡,既能阻挡涌水涌砂,又能约束盾构姿态减小地层扰动,全方位保障周边建构筑物安全,是本高风险地段盾构接收的最优方案。本次盾构接收是石家庄地铁首次采用钢套筒施工法,也为今后同类条件下的盾构施工积累了宝贵的实践经验。

5号线一期工程线路全长19.9公里,共设站19座,项目建成后将与4号线相扣成环,进一步完善石家庄市轨道交通线网层次,优化城区空间结构,助力提升城市发展能级和综合承载力。当前5号线一期工程19座车站已有12座车站主体结构封顶,13个区间双线贯通,4个区间单线贯通,铺轨工程正在全面展开,预计2027年建成通车。接下来,石家庄交投集团所属轨道集团将奋发进取、攻坚克难,加快科学组织施工,只争朝夕推动轨道交通二期工程建设。

来源:石家庄轨道交通

编辑:伟杰

责编:赵珊

监制:张婕

版权归原作者所有,如有侵权请联系删除

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