Study of hydrothermal processes in ice-layers subgrade under constant temperature and dynamic loading.

The presence of ice-layers in the subgrade soils makes the hydrothermal state of road subgrade built in island permafrost regions more susceptible to external environmental influences. In order to deepen the study of the ice-layers subgrade, a hydrothermal study of subgrade under constant temperature and dynamic loading was carried out. It was found that dynamic loading can change the temperature, moisture and pore water pressure distribution.

Study on the geometry characteristics of soil primary mineral particles under cryogenic action.

Repeated freeze-thaw causes the fragmentation and aggregation of soil particles, which affect particle shape (aspect ratio, roundness, etc.), and this process is a cryogenic weathering process. Changes in soil particle morphology record information about freeze-thaw processes and have the unique characteristics of freeze-thaw traces.