Академическое издательство «Гео»

Embankment, subgrade, permafrost, permafrost table, cooling effect, geophysical survey, economic performance



KRIOSFERA ZEMLI, 2018, Vol. XXII, № 3, p. 67-71

A new way for thermal stabilization of permafrost under railway embankment

A.A. Zhang1, E.S. Ashpiz2, L.N. Khrustalev1, D.M. Shesternev3

1Lomonosov Moscow State University, Faculty of Geology, department of Geocryology,
1, Leninskie Gory, Moscow, 119234, Russia; zhang.andrew.msu@gmail.com
2Moscow State University of Railway, Institute of Track, Construction, and Structures,
department of Track and Track Facilities, 2, Minaevskiy per., Moscow, 127055, Russia
3Melnikov Permafrost Institute, SB RAS,
36, Merzlotnaya str., Yakutsk, 677010, Russia

It is suggested to prevent permafrost thawing under railroad embankments by laying a geosynthetic heat insulator on the slopes. The insulation creates a cooling effect whereby the permafrost table moves upward from the embankment base to its body. The thaw depth reduction is confirmed by geophysical surveys at a test segment of a railway operated in a permafrost area. The new method has better economic performance than other known ways of thermal stabilization.

Embankment, subgrade, permafrost, permafrost table, cooling effect, geophysical survey, economic performance

DOI: 10.21782/KZ1560-7496-2018-3(67-71)

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