The reported slope failures during thawing season in Hokkaido involved alarge failure of soil mass traversing a length of approximately 50 meters. Typically, two-dimensional plane strain analysis was performed to analyze slope stability, considering the effect of freeze-thaw, snowfall, and rainfall. However, this method is not sufficient for large-scale slope stability issues occurring in Hokkaido. Therefore, a study was initiated to investigate the applicability of 3D analysis, coupled with seepage and thermal analysis, to determine slope stability in a cold region.
The geotechnical researchers applied the 3D equilibrium limit features in PLAXIS to analyze the slope stability using pore water pressures derived from 3D-coupled thermal-seepage analysis. Using Bentley’s application, the analysis proved that the 3D method is effective to simulate slope failure in cold regions and is appropriate for large-scale slope failure problems. The digital solution can be applied to difficult slope issues involving complex geological formations.
Going Digital Awards in Infrastructure for
Applicability of 3D Coupled Seepage and Thermal Analysis to Soil Slope Stability