Landslide Susceptibility and Hazard Assessment for Lined Structures: Railway Kralovany – Liptovsky Mikulas (Slovak Republic) Case Study

Landslides and other slope deformations are one of the most widespread geodynamic events in The West Carpathians. Taking into account that the socioeconomics and technological level will increase in the future, the landslide hazard assessment is important for the urbanized areas and can reduce sanation expanses. Selected area of case study belong to the well known landslide areas in Slovakia and spreads 50 km along railway between towns Kralovany and Liptovsky Mikulas (Slovak Republic).

Effectivity of landslide susceptibility and hazard assessment using geographical information systems (GIS) and statistics is dependent on the suitable selection of geological factors, which play a dominant role in slope stability state. In presented case study six factors influencing the slope stability are evaluated – lithology, slope aspect, slope angle, hypsographic level, actual landuse and registered landslides. These factors have been prepared in a vector form (parametric maps) and consequentially processed to the raster form. Bivariate statistical analyses were used for the construction of final landslide susceptibility and hazard map.

The case study affords the prognosis of landslides space distribution, not the time frequency of their activation. Results of the landslide susceptibility and hazard assessment are presented as a map true to scale 1:10 000.