ABSTRACT
Although landslides are a group of natural hazards, the factor causing their activation is often human activity. The construction of buildings and roads on slopes has an especially unfavourable impact on its stability. Additional load and disturbance of natural hydrological conditions are factors that may cause the reactivation of old landslides.
This paper contains a case study of the activation of landslide processes, which was caused by human activity. In the area of the old and inactive landslide an educational complex was built. The complex consisted of four buildings located in one line across the slope. An additional, very unfavourable factor was the high level of groundwater, which was rising up to the ground surface temporarily. At the time of long-term rainfall activation of landslide processes in the substrate of the building occurred. These processes are characterized by slow changes, causing progressive destruction of buildings.
The geological structure of the slope was determined by six core holes with a depth of about 20 m. On this basis, the geological layers, hydrological conditions and slide surface position were determined.
Deformations of the slope and the building were monitored by using integrated survey techniques: precision leveling, electronic techeometry, traversing (angular-linear), static GNSS and laser scanning.
The work includes the analysis of initial geological and hydrological conditions, the analysis of the causes and the course of deformation processes in the substructure, the results of the measurements and the analysis of the deformation of buildings caused by a landslide.
