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Utilization of large scale highway and tunnel construction in high elevation area

    The research had resolved highway, tunnel construction difficulties in high elevation area with complex geological situation, bad climate, non-convenient transportation, developed a comprehensive technical system, which is top one in the world. The study result is used in large scale in tunnel among mountain area, such as Erlangshan tunnel and zhegushan tunnel, which have been in service for many years and even experience Wenchuan earthquake.
  2nd of national advanced technology, 2008