Qingzang railway, railroad entering tunnel

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  Tangshan (guest)

  Kunlun Mountains Tunnel 昆仑山隧道 Kunlun mountain tunnel is a first world plateau permafrost tunnel, located in the territory of the Qinghai Tibet Railway in Qinghai, 1686 meters in length, altitude 4648 meters. 昆仑山隧道是世界高原多年冻土区第一长隧，位于青藏铁路青海境内，全长1686米，海拔高度4648米。由于昆仑山隧道独特的地理位置、严酷的自然环境、复杂的地质条件使其结构、施工工艺和施工方法不同于一般地区隧道。

  10 years ago | reply | hide comment