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中铁二十局集团有限公司曾三次挺进青藏高原,建设青藏铁路一期工程,2001年第四次挺进世界屋脊承担青藏铁路第七标段施工。该标段是青藏线上全部处于海拔4800米以上的唯一标段,地处被称为“生命禁区”的可可西里无人区,集青藏铁路的冻土、缺氧、高寒、环保、保障等难题于一身,该标段包括风火山隧道实验段和北麓河厚层地下冰路基实验段,担负17项试验研究项目。
China Railway 20th Bureau Group Co., Ltd. has three advancing into the Qinghai-Tibet Plateau, the construction of the first phase of the Qinghai-Tibet Railway, 2001, the fourth advance into the roof of the world commitment to the seventh section of the construction of the Qinghai-Tibet Railway. It is the only section of the Qinghai-Tibet line at an altitude of 4,800 meters above sea level. It is located in the Hoh Xil No-man’s Zone, known as the “life restricted zone.” It is a place where the permafrost of the Qinghai-Tibet Railway, anoxia, alpine, environmental protection and protection And other challenges in one, the tenders, including the experimental section of the volcano and tunnel Beiluhe thick underground ice embankment experimental section, responsible for 17 pilot research projects.