ABSTRACT

The article presents the peculiarities of geotechnical and geophysical survey conducted in one of the High North areas. Based on the obtained site-specific geotechnical and geophysical data, the quantitative assessment was performed of slope stability. Soil slips occur on the site under analysis mainly due to significant terrain energy; low strength properties of soil due to moisture and thawing; and man-induced load. The high probability of landslide developments makes it necessary to cover the site with engineering protection. A simulation model was developed of the stressed-deformed state of the soil body using the finite-element technique. The calculations enable a conclusion that there are two stress distribution patterns and, consequently, two deformation patterns on the site under analysis. The mathematical modeling conducted for the pressure distribution region is indicative of the likelihood for landslide deformations and profound soil subsidence to occur due to thawing (and, consequently, reduced modulus of deformation) in lenses and interstratified layers composed of icy grounds.