Sağlık District Landslide (Ordu, Turkey)

Abstract

Landslides cause loss of life and property from time to time. In Turkey, the Black Sea Region is the region where landslides are seen most frequently. In this study, Sağlık District Landslide that occurred on May 15th, 2019 in the Central Black Sea Region was examined. This study aims to investigate the occurrence of landslide and its consequences. For this purpose, area was visited and measurements were performed, soil samples and photos were taken. The region which has a rough terrain, receives precipitation throughout the year. The site has volcanic bedrock and thick debris and ground cover on it. The liquefaction limit of the soil is between 45.7 and 47.8 and the plasticity limit is between 20.51 and 22. Snowmelt is the main factor that triggers landslides in the work area. Also, turning forests into agricultural areas, opening roads crossing the slopes, additional weights created by houses, water leaking from the sewer network to the ground among preparative conditions of landslides. Stress cracks that started to occur in the crown part of the landslide three years ago started to expand on the day of the incident. The authorities who realized this evacuated the houses being under threat. Despite this, 22 buildings were destroyed and 8 hectares of agricultural land were damaged. It has been proposed to establish new settlements far from the landslide zone and the people in the landslide zone be moved to safe areas.