世界第一高隧青藏铁路风火山隧道施工新技术
NEW TECHNIQUE FOR CONSTRUCTION OF FENGHUOSHAN TUNNEL, THE HIGHEST TUNNEL IN THE WORLD, OF QINGHAI-TIBET RAILWAY
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摘要: 高原、严寒条件下的青藏铁路风火山隧道施工, 在永久冻土区隧道施工技术、合理支护结构形式以及人员健康等方面提出了严峻挑战。采用适用高原严寒条件下的施工方案, 综合利用、保护冻土围岩的隧道施工方法和独特的通风、供暖、供氧和供水等辅助施工作业措施, 并结合施工技术研究, 保证了隧道施工的顺利进行。Abstract: Great challenges have been encountered in the construction of Fenghuoshan Tunnel for its chilly climate and plateau condition. The difficulties are how to construct the tunnel without harm to frozen soils; how to use special techniques to adapt to the absence of oxygen in the plateau. A series of techniques have been adopted to overcome these difficulties, the tunnel is sucessfully constructed eventually.
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