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青藏铁路自2006年7月1日全线开通以来,有“世界第一高隧”之称的风火山隧道安然度过了“夏、秋、冬”三季.青藏铁路风火山隧道海拔5010米,全长1338米,轨面海拔标高4905米,全部位于永久性高原冻土层内,是目前世界上海拔最高、横跨冻土区最长的高原永久冻土隧道,有“世界第一高隧”之称.据了解,青藏铁路全长1956公里,其中多年冻土地段550公里,是目前全球穿越连续性永久冻土地区最长的铁
Since the opening of the Qinghai-Tibet Railway across the board from July 1, 2006, the Fenghuoshan Tunnel, which has the title of “the world’s first high-rise tunnel,” passed the three seasons of “summer, autumn and winter.” The Fenghuoshan tunnel on the Qinghai- 5010 meters, a total length of 1338 meters, the elevation of 4905 meters above sea level, all located in the permafrost of the permanent plateau, is currently the world’s highest elevation, the longest permafrost tunnel across the permafrost, the “world First high tunnel. ”It is understood that the Qinghai-Tibet Railway a total length of 1956 km, of which 550 km permafrost area, is currently the world’s longest continuous transit of permafrost iron