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社评“椒小BBWBBWBBWBBW”-知识课堂

延榆高铁首椒小BBWBBWBBWBBW座隧道贯通

来源: 中国工人报
2025-03-16 14:33:56

最佳回答

“椒小BBWBBWBBWBBW”延榆高铁首椒小BBWBBWBBWBBW座隧道贯通

  3月1椒小BBWBBWBBWBBW5日,由西成客专陕西公司椒小BBWBBWBBWBBW建设、中铁三局承建的延榆高铁全线首座隧道—孟家岔1号隧道顺利贯通,这是延榆高铁建设取得的重要阶段性成果,标志着全线隧道施工进入攻坚阶段。据悉,延榆高铁是国家“八纵八横”高铁网中包海椒小BBWBBWBBWBBW通道的重要组成部分,线路全长约239公里,设计时速350公里。

  据介绍,此次贯通的孟家岔1号隧道位于陕西省榆林市米脂县城郊镇,隧道全长453.55米,为单洞双线隧道,所处位置为黄土梁茆沟壑区,地形条件极为复杂。其地形起伏剧烈,地势陡峭,最大埋深达61米,给隧道施工带来了巨大挑战。(记者 梅镱泷 张远 视频来源 中铁三局集团)

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