Earth’s Cryosphere, 2017, Vol. XXI, No. 3, p. 23-29
THERMAL DEFORMATION OF FROZEN SOILS: ROLE
OF WATER AND GAS SATURATION
L.T. Roman1, V.P. Merzlyakov2, A.N. Maleeva1
1 Lomonosov Moscow State University, Department of Geology, 1, Leninskie Gory, Moscow, 119991, Russia; ltr@inbox.ru
2 Sergeev Institute of Environmental Geoscience, RAS, 13, build. 2, Ulansky per., Moscow, 101000, Russia; cryo2@yandex.ru
Thermal deformation of different components in frozen soil (soil skeleton and pore ice, unfrozen water and gas) is considered theoretically and experimentally. The experiments are applied to frozen sand, silt and clay silt with different moisture con-tents and gas saturation degrees in the –9 to –1 °C temperature range. Deformation is higher at greater gas saturation. Transient deformation has different relaxation times depending on temperature and grain sizes of soils.
Frozen soils, temperature, strain, moisture, porosity, gas saturation, transient deformation, stationary deformation