Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Landslide Susceptibility in Cemented Volcanic Soils, Ask Region, Iran
Abstract Landslides are a major geohazard in the Alborz Mountains along the transportation links in Haraz valley, northern Iran. To find the appropriate analysis method for slope stability assessment of volcanic soils, a susceptible slope in the volcanic region of Ask has been modeled using finite difference and finite element methods. Slope stability is evaluated using both limit equilibrium and shear strength reduction methods. Analysis using the finite difference method coupled with shear strength reduction provided a more explicit explanation of the observed failure mode for moderately-cement volcanic soils in the region. Numerical analysis indicates a critical stability condition for the eastern flank of the slope. The failure is localized at the lower face of a travertine layer in the upper part of the slope. Travertine crust on top of the slope is in a state of tensional yield and fracturing. Crack opening in the top stone layer due to tensile strength reduction increases surface-water inflow and contributes to overall soil mass weakening by wetting.
Landslide Susceptibility in Cemented Volcanic Soils, Ask Region, Iran
Abstract Landslides are a major geohazard in the Alborz Mountains along the transportation links in Haraz valley, northern Iran. To find the appropriate analysis method for slope stability assessment of volcanic soils, a susceptible slope in the volcanic region of Ask has been modeled using finite difference and finite element methods. Slope stability is evaluated using both limit equilibrium and shear strength reduction methods. Analysis using the finite difference method coupled with shear strength reduction provided a more explicit explanation of the observed failure mode for moderately-cement volcanic soils in the region. Numerical analysis indicates a critical stability condition for the eastern flank of the slope. The failure is localized at the lower face of a travertine layer in the upper part of the slope. Travertine crust on top of the slope is in a state of tensional yield and fracturing. Crack opening in the top stone layer due to tensile strength reduction increases surface-water inflow and contributes to overall soil mass weakening by wetting.
Landslide Susceptibility in Cemented Volcanic Soils, Ask Region, Iran
Mousavi, S. Mostafa (Autor:in)
Indian Geotechnical Journal ; 47 ; 115-130
11.05.2016
16 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Landslide Susceptibility in Cemented Volcanic Soils, Ask Region, Iran
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