| Autor: |
Ivanik, Olena, Menshov, Oleksandr, Bondar, Kseniia, Vyzhva, Sergiy, Khomenko, Ruslan, Hadiatska, Kateryna, Kravchenko, Dmytro, Tustanovska, Lubov |
| Zdroj: |
Modeling Earth Systems and Environment; 20220101, Issue: Preprints p1-13, 13p |
| Abstrakt: |
The landslide hazards have become a common phenomenon in the Kyiv urbanized area in Ukraine. The susceptibility mapping indicates only the relative stability of slopes without absolute predictions. For the absolute prediction at the local level the field work, monitoring and numerical modeling of landslide processes within landslide-prone slopes has been provided. Site Lysa Gora is typical for the Kyiv landslides with the unstable slopes; it is the historical place of fortress. The landslide on this slope has a great impact on the infrastructure including railway and highway. The determination of the stress-strain state of a landslide slope demonstrate the approaching to a state of marginal equilibrium. Mottled clays, which are the main deforming horizon for landslide formation have a solid to semi-solid consistency, weakly compressible, highly plastic, weakly swelling, with low resistance to shear loads (0.01 KPa) and significant deformation values (40 KPa). Electrical resistivity tomography measurements revealed two local zones of activation of landslide displacements, which are located in the range of depths of 3–8 m from the ground surface. The random distribution of the soil magnetic susceptibility (χ, MS) and frequency dependence of the magnetic susceptibility (χfd) in the topsoil as well as in the vertical soil genetic horizons confirm the occurrence of the displacement, redistribution and newly deposition of the soil and deposits related to the erosion and landslide processes. The results demonstrate that the landslide process could be activated in case of heavy precipitation and changing the safety factor. |
| Databáze: |
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