Analysis of the Air Temperature Change Indexes Associated with the Reliability of Engineering Measurements in Permafrost Regions along the Qinghai-Tibet Railway

Permafrost is a special geological phenomenon controlled by climatic conditions.The changes of air temperature and precipitation will greatly influence on the permafrost along the Qinghai-Tibet Railway.The effects of climate changes on the reliability of engineering construction and permafrost thermal regime are analyzed and discussed based on climate changes in the global and in the Tibetan Plateau.By analysis of engineering design principles,engineering structures and reliability of engineering measurements,how to understand the reliability of frozen soil engineering is discussed.