Research on Moisture-Heat-Stress Fields of the Soil around Oil Pipeline in Permafrost Region

In allusion to a series of special issues in oil pipeline located in permafrost region in where the pipeline will run into damage from soil heaving and thaw-settlement, research situation in moisture field, temperature field and stress field (3-field) of the soil around the pipeline and the 3-field's coupling are reviewed.The relationship of the oil pipeline buried in permafrost region with the 3-field is introduced and current relative research achievements about the 3-field with the oil pipeline in permafrost region are analyzed.Some suggestions about future study on the 3-field for permafrost region's oil pipeline are presented in order to give a reference for design, construction and operation of the oil pipeline in permafrost region.