Research On The Impact Of Sino-Russian Oil Transportation Project On Perennial Permafrost

The China-Russian oil project is an important energy line in China.It crosses the permafrost zone along the project.Therefore,it has important theoretical and practical value for studying the law of temperature variation in permafrost in the project area.This paper takes the characteristics of the natural environment,geological structure and permafrost distribution along the oil transmission project as the research basis,analyzes the influence of the construction of the oil transmission project on the surrounding permafrost degradation,and studies the variation law of the ground temperatures in permafrost around the oil project in one year.The finite element modeling was used to simulate the influence of the temperature field in the permafrost around the oil delivery project within 50 years of the operation period.The measured data was well fitted and the effect of the pipeline oil temperatures on the permafrost in different locations was different.The comparison of the maximum melting depth at the bottom of the tube shows that for the line heat source,the high temperature frozen soil is more sensitive than the low temperature frozen soil.The insulation layer is wrapped on the pipeline surface,which can effectively reduce the maximum melting depth of permafrost and reduce the perturbation of permafrost.Aiming at the occurrence of adverse geological disasters around the oil project,the permafrost damage prevention measures were proposed.