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Abstract Based on the observation data of the embankment in test section K369，the characteristics of the ground temperature and the deformation of the embankment are analyzed；and the relationship between the ground temperature and the deformation is presented. The observation data indicate：(1) the embankment transverse deformation difference has close relationships with the ground temperature transverse difference of the embankment，and it is controlled by the ground temperature state and its variation；(2) the difference of solar radiant amount on slopes results in transverse thermal difference in the embankment，and also leads to the transverse uneven settlement difference；and (3) the development of embankment deformation lags behind the development of embankment temperature，so the time of the largest settlement deformation is not equal to that of the maximum thaw depth. For the embankment with uneven deformation，the times of the largest settlement deformation on two sides of embankment are different；and the time of the largest settlement deformation on the south side is later than that on the north side of the embankment. The deformation difference will be aggravated with time；and finally the embankment stability is affected by longitudinal cracks of embankment caused by asymmetric settlement of permafrost.
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Received: 04 January 2009
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