Variation of Permafrost Upper Limit in Permafrost Subgrade Covered by Snow on Steep Slope of Alpine Mountains

Table 4

Frozen soil upper limit of roadbed under different thickness of snow cover.

Position (m)	0 cm snow cover	10 cm snow cover	30 cm snow cover	50 cm snow cover	70 cm snow cover
Left road border	4.12	4.14	4.21	4.25	4.28
Roadbed central line	3.21	3.27	3.44	3.70	3.87
Right road border	2.82	2.93	3.19	3.32	3.41