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社评“XXXXXL2023”-梳理天下新闻

中国首次实XXXXXL2023现大直径盾构下穿铁路“咽喉区”

来源: 参考消息
2025-01-10 03:58:22

最佳回答

“XXXXXL2023”中国首次实XXXXXL2023现大直径盾构下穿铁路“咽喉区”

  中新XXXXXL2023社天津1月9日电 (记XXXXXL2023者 王君妍)记者从天津港保税区获悉,由中国铁路设计集团有限公司(简称中国铁设)勘察设计的津潍高铁津沽海河隧道9日成功下穿既有西南环进港线东大沽站,为中国首次实现大直径盾构下穿既有铁路“咽喉区”。

  津沽海河隧道全长约6.7公里,是津潍高铁全线唯一一条盾构隧道。此次津沽海河隧道下穿西南环进港线XXXXXL2023东大沽站段落全长164米,与东大沽站的平面交角约为116,下穿工程段落内分布有“咽喉区”的六组道岔、多个转辙机及多根接触网杆,且变电所局部也位于盾构线路正上方,内有高压开关柜、调压器等设备。

  据悉,西南环铁路东侧“咽喉区”是沟通天津港与内陆之间重要货运通道,也承担了京津冀地区的大量货物运输工作,因此,津潍隧道下穿东大沽站过程中如何保障铁路设备设施安全是重中之重。

  据介绍,津潍高铁盾构区间与“咽喉区”路基地面最小竖向间距仅有36.2米,此项工程在中国尚无先例可鉴。在设计和施工阶段,团队不断优化该穿越段落的线路,设计平纵加大隧道埋深,开展相关数值模拟计算,并组织专家会对盾构下穿铁路“咽喉区”进行了风险研判与评估,确定专项施工和监测方案,做好“咽喉区”轨道、接触网杆等设备设施防护。

  津潍高铁是中国“八纵八横”高铁网中京沪第二通道和沿海通道的组成部分,线路起自滨海站,终至潍坊北站。津潍高铁建成后将进一步加强天津市与山东半岛、长三角的互联互通。(完)

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