STUDY OF STABILITY OF EMBANKMENT UPON THE SLOPE IN THE PERMAFROST AREA OF QINGHAI-TIBET RAILWAY

There is an incipient fault to long-period operation in the sector of embankment upon the slope, so it is important for long-time safety traffic to evaluate the inclined embankment of recent or future time. Stability assessment of railway slope roadbed in permafrost area is difficult from others, because the location of interface between frosting and thawing is an allimportant factor to the stability of the embankment. Though monitoring the features of temperature and displacement of embankment in the paper, the deformation laws of each section are analyzed in details and the appraisal models are built.