Stability assessment of the landslide in a segment of the Bartın Kirazlı Bridge dam Diversion, Western Black Sea Region, Türkiye

Date

2025-11-01

Author

Görbil, Barış
Akgün, Haluk
KOÇKAR, MUSTAFA KEREM
Arslan Kelam, Arzu

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The Bartın Kirazlı Bridge Dam construction has started on Gökırmak stream, western Black Sea Region, for the purposes of irrigation and power generation, and is continuing at present. By the end of construction, it is anticipated that the existing Bartın-Safranbolu Highway will be submerged underwater due to the increase in the Gökırmak stream level. With the start of construction of the new highway alignment for the relocation of the submerged road named as the “Bartın Kirazlı Bridge Dam Diversion”, the paleo-landslide regions alongside the new alignment have been triggered and led to mass movement along a segment of the new highway. This study aims to define the characteristics of this landslide, determine the sliding surface geometry and location, reveal the mobilized mass amount, and specify the appropriate remediation measures for long-term stability. For this purpose, geotechnical investigations and laboratory tests were conducted. With the data obtained from the engineering geological and geotechnical investigations, the landslide geometry and the shear strength parameters of the landslide mass were determined by back analysis. In addition, slope stability analysis was performed by limit equilibrium analyses for both static and dynamic conditions. As a result of these studies, groundwater level reduction by pumping in short-term, rock buttress application after temporary toe excavation and de-watering of the area by surface and subsurface drainage remediation phases were determined to be suitable for the long-term stability of the landslide.

Subject Keywords

Back analysis, Bartın-Safranbolu highway, Inclinometer, Kirazlı bridge dam, Landslide, Limit equilibrium analyses, Remediation, Slope stability

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105021395756&origin=inward
https://hdl.handle.net/11511/116793

Collections

Department of Geological Engineering, Article