高海拔高寒隧道施工技术

Tunnel Construction Technology for the High Altitude and the High and Cold Area

大坂山公路隧道地处青藏高原东北部 ,祁连山脉东段南支脉 ,全长 15 30m ,洞口路面海拔高度为3792 88m ,是国内目前海拔最高的隧道。为了解决好高海拔高寒地区隧道施工问题 ,施工、设计、科研单位共同组织了科研攻关小组 ,通过研究、实践、总结、改进、提高 ,获得了在高海拔高寒地区修建隧道的基本经验和一些施工关键技术。该工程的成功建设 ,为我国西部大开发 ,修建高海拔高寒地区公路、铁路隧道提供了宝贵的经验和施工技术。

The Dabanshan highway tunnel, located in the north-east of Qinghai-Tibet plateau, the south branch range of Qilianshan mountain, is 1 530 m long. The tunnel portal is at the altitude of 3 792 88 m, the highest altitude where tunnels have been built in China. To solve the construction technique for the tunnel in the high altitude and the high and cold area, the construction, design and scientific research units have organized a R&D team to tackle the technical issues. Based on the research, practice, summary, improvement and enhancement, the team has learned fundamental experiences and developed some key technologies for tunnel construction in the high altitude and the high and cold area. The success of the engineering has provided valuable experiences and construction technologies for the construction of highway and railway tunnels in the high altitude and the high and cold areas.