Gündoğdu (Ri̇ze) landslide and its surrounding slope susceptibility

In this study, zone of Gündoğdu (rize) located in the Eastern Black Sea Region were examined in terms of landslide susceptibility and its stability analyzes were conducted. 1/25.000 scale geological map of Gündoğdu and its surrounding was provided, the unit sarelisted as Melyat Formation (MiddleEocene) and alluvium (Quaternary) from older to younger. 1/500 scale crosssections were generated for five different landslide happened at Gündoğdu in 2010. Stability analyzes were done with this data. Angle of internal friction (φ), cohesion (c), saturated unit weight, natural unit weight, dry unit weight and submerged unit weight (γd, γn, γk, γ ') , specific gravity (Gs), porosity (n), saturation degree (SR), voidratio (e) and grain size distribution were determined with laboratory tests of soil samples which were taken to determine the engineering properties of soils located in places which stability calculations would be held. Following the results of these experiments, stability analyzes were done with 4 different methods according to the possible sliding surfaces that were plotted from geological section of landslide. As a result of these datas, this region pose a great dangere specially after rainfall with the effect of weathering, For this purpose, needs to be done for the prevention of landslides have been introduced.