Karabük Organize Sanayi Bölgesi Heyelanının İncelenmesi

This study is about the investigation of a landslide which occurred at the Organized Industrial Zone located in Zopran village / Karabük. Because the boundary of the landslide was immediately adjacent to the Transformer Substation and Overhead Power Line, urgent solutions were required. The reasons for the landslide were discussed and the proposed solutions were also presented in this paper. The landslide was told to move twice in different times. The width of the landslide was almost 80 m and the length was 120 m. While the height of the main scarp was 9-11 m, rock outcrop was not observed at the main scarp. It was also observed that there were some other secondary scarps in the moving land. The soil consists of uncemented loose silty and sandy formations which contains low plasticity clay bands. There were some small puddles and the saturated soil near the foothills was seen to be very soft. The source of the water was investigated and it was found out that the wastewater of Organized Industrial Zone was transferred by using concrete pipes for a long time. It was understood that the main factor to trigger the landslide was the saturation of the soil because of the leakage from the pipes. Physical and mechanical laboratory test were conducted on the undisturbed and disturbed soils to understand the nature of the soils in the study area. After the limit equilibrium and numerical analysis, it was shown that piled wall and berm solution is enough to have a safe design.