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Summary of into the basis of research results draw before , the Beijing-Harbin line Shanhaiguan the a the Siping paragraph railway roadbed disease engineering background , analysis and research on the seasonal permafrost regions frost damage . Papers by the formation of the seasonal frozen soil frost damage factors , from the temperature field research Ages , in the freeze introduced the concept of the surface temperature on the basis of the relationship between surface temperature and soil temperature field in depth , and thus determine the freeze and freeze depth factor. Secondly, Occurrence introduced several explanations of the theory of moisture migration , soil water , which elaborated the role of moisture migration in the freezing process , classification of seasonal frost damage to form factors , performance characteristics to determine the frost damage remediation measures . Finally , with the railway embankment detection radar experiment report , the thickness of ballast and subgrade structure layer thickness , Subgrade Disease detection analysis , base bed of structural morphological analysis , subgrade surface deformation analysis , settlement analysis , track bed pollution degree of analysis , track bed and base bed containing The amount of water , the bearing capacity of the foundation bed and filler nature . Research on this topic determine the types of diseases of frost damage , determine remediation frost damage , enhance the line quality , improve the speed of the train , provide a reference for the seasonal permafrost areas on-site remediation and design .
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