九万彩票下载(官网)网址:www.9w.cc

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              1. 九万彩票下载(官网)网址:www.9w.cc

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                          中老铁路楠暖一号隧道顺利贯通
                          来源: 发布日期:2018年11月27日 字体:【

                            近日,由中铁广州工程局集团承建的中老铁路楠暖一号隧道顺利贯通,标志着中铁广州工程局中老铁路项目部“百日大干”又一节点目标完成,在2018年度隧道施工中取得了丰硕的成果。中老铁路楠暖一号隧道位于老挝乌多姆赛省孟赛县汪洋村,隧道全长688延米,经优化设计之后缩减为673延米,其中,V级围岩355延米,占全隧52.7%,IV级围岩310延米,占全隧46.1%,明洞开挖8延米,占全隧1.2%。

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