国人瞩目的青藏铁路 ,是一条位于平均海拔 4 0 0 0 m以上的高原铁路 ,修建这条铁路意义重大。这次要修建的 1118km线路 ,其中有 6 0 0 km位于多年冻土地段 ,是全球目前穿越高原、高寒、缺氧及连续性永久冻土地区最长的铁路 ,由于这些特点 ,在建设、运营和管理中会有许多难题期 People’s attention of the Qinghai-Tibet Railway, is located at an average altitude of 4000 meters above the plateau railway, the construction of this railway is of great significance. The 1118km line to be constructed this time, of which 600km is located in the permafrost area, is the longest railway in the world that currently passes through plateau, alpine, anoxic and continuous permafrost. As a result of these characteristics, And management there will be many difficult problems