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社评“西方38大但人文艺术”-环球时报

深南高铁全线西方38大但人文艺术首座隧道贯通

来源: 南方都市报
2024-12-23 08:34:30

最佳回答

“西方38大但人文艺术”深南高铁全线西方38大但人文艺术首座隧道贯通

  中新西方38大但人文艺术网云浮12月20日电 西方38大但人文艺术(郭军 李金雨 张静)由中铁十四局承建的深南高铁竹斗夫隧道20日贯通,这是深南高铁全线首座实现贯通的隧道,标志着该工程建设走上快车道。

深南高铁全线首座隧道20日贯通。 崔石 摄

  深南高铁由中铁建华南建设有限公司总承包管理,线路起于珠三角枢纽机场,经佛山、肇庆、云浮至粤桂省(区)界,设计时速为350公里,预计于2027年底通车。中铁十四局承建标段位于广东云浮市,线路穿越两区(市)三镇,全长14.85公里。此次贯通的竹斗夫隧道全长209.5米,为单洞双线隧道,地质构造复杂,岩层扭曲破碎,存在断层、溶洞等多重不良地质风险,施工管控重难点多。

  为确保隧道顺利贯通,中铁建华南建设有限公司和中铁十四局建设团队针对隧道地质特点,采用新奥法设计原理组织施工,坚持“管超前、严注浆、弱爆破、短开挖、强支护、早封闭、勤量测、及时衬砌”的原则,对关键工序跟班盯控,深度落实穿透式、网格化管理要求,通过班组座谈会、班组现场安全培训、项目现场课堂等活动,确保施工平稳有序推进。

  据施工现场负责人孙凤雪介绍,施工过程中,该项目充分发挥“四小四新”工装设备操作简单的优势,先后采用初支平整度刮刀、拱架垂直度控制装置、拱脚连接保护等装备,极大地节约了资源,保障了现场施工。“我们广泛使用初支平整度刮刀对湿喷完成的混凝土面进行刮平,既能提高湿喷混凝土质量,还能保证初支混凝土面平整度,降低反复喷浆找平所消耗的混凝土,避免了为找平初支面造成局部喷射混凝土过厚或侵限的问题。”孙凤雪介绍。此外,该项目还引进使用智能化二衬台车,直观地提升了实体质量管控,改善了施工人员作业环境,减少了人为误差和材料浪费,大大提高了施工精度和效率。

  目前,中铁十四局承建的项目标段已有6处隧道开始施工,重点工程幌伞村隧道、新村隧道等已全面开工建设。

  据悉,作为连通粤桂两省区的重要大通道,深南高铁通车后,南宁至深圳高铁最快运行时间可由现在的3.5小时缩短至2.5小时,将进一步完善广东与广西、云南的高铁网,对支撑粤港澳大湾区和深圳先行示范区建设,推动云浮加快融入粤港澳大湾区一小时经济圈具有重要意义。(完)

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