engleski

Implementation of in-situ and geophysical investigation methods (ERT & MASW) with the purpose to determine 2D profile of landslide

Influence of region lithostratigraphic composition has a dominant effect on a development and the shape of the landslide slide surface. Paper contemplate 2D profile model of retrogressive landslide along with the implementation of "in situ" and geophysical investigation methods for the landslide instability with the complex slide surface. Purpose of the investigation works is to obtain insight in the ground composition and geotechnical characteristics of the soil on the area of manifested landslide, identification of the slide surface as well as creation of geotechnical soil profiles. To determine position and size of the surface of rupture, investigation works have been undertaken involving: core drilling, dynamic probing by light dynamic probe (DPL), flat dilatometer probing (DMT) and static probing by CPTu probing. Used geophysical methods comprised geoelectrical tomography (ERT) and seismic multichannel analysis of surface waves (MASW). ERT tomography method can be considered appropriate for geometrical landslide outlining, as well as recognizing potential unstable slope areas. From the other side, electrical profiling results needs to be calibrated with data obtained from other in- situ investigations. This was accomplished by use of In-situ probes, CPTu and DMT. Obtained 2D profile of the landslide model was additionally arithmetically confirmed by the use of limit equilibrium methods. Investigation results accomplished by the combination of proposed investigation methods have been proved as a good base for the exploration of the complex landslide instabilities.

landslide, slide surface, CPTu, Marchetti dilatometer (DMT), in situ horizontal stress index (KD), electrical resistivity tomography (ERT), multichannel analysis of surface waves (MASW), limit equilibrium methods

Glavni autori rada: Strelec, S., Grabar, K.