摘要
青藏铁路是世界瞩目的高原铁路(平均海拔高程为4500m),其中的546km路程经过多年冻土区。在多年冻土区上修筑高原铁路是一个世界性的难题,特别是多年冻土为"感温易变体",对其热稳定性的研究是世界级的难题,尤其是气温变化对多年冻土的影响一直是一个被各界广泛关注的问题,结合工程实践就此进行了初步的探讨。
The Qinghai-Xizang Railway is world famous one constructed on plateau with average elevation 4500m above sea level , 546 km length of which passes through ever frozen ground . It is especially difficult to build highland railway on ever frozen ground which is sensitive to air temperature . Study on thermal stability of the ground is a difficult problem , most of all , effect of air temperature variation on ever frozen ground is widely paid attention ,The problem is tentatively discussed in the light of project practices in this paper.
出处
《四川水力发电》
2004年第B06期1-2,共2页
Sichuan Hydropower
关键词
气温
多年冻土
平均地温
影响
青藏铁路
air temperature
ever frozen ground
average ground temperature
effect
Qinghai-Xizang Railway
