Characterization and Assessment of Large Landslide Movement Along the Bursa-Inegol-Bozuyuk Highway in Turkey

Date

2014-09-19

Author

ORAL, Damla Gaye
Akgün, Haluk
Kockar, Mustafa Kerem

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

208
views

0
downloads

This study discusses the geotechnical characterization, modeling and stabilization of a large scale landslide that occurred in highly weathered rock during highway construction. The study area is located along the Bursa-Inegol-Bozuyuk highway in Turkey. The mass movement occurred 110 m behind the road cut with 400-600 mm wide tension cracks. Some remediation techniques were applied on site while mass movements were continuing and the size of the tension cracks that were located at the crown reached a width in the order of a meter. A detailed geomechanical and geotechnical site investigation including engineering geological boring, standard penetration test, pressuremeter tests, inclinometer measurements along with laboratory test data was performed at the project site. Detailed engineering geological mapping was performed to document the observed slope movements. In the light of the compiled data, critical profiles were determined and back analysis was performed through comparing the displacement obtained from the inclinometer results and the finite element model. Regarding the back analyses, the site was modeled using coupled slope stability analyses along the most representative profile by considering the landslide mechanism, the parameters evaluated from the geotechnical investigations, the size of the landslide and the location of the slip circle. Since the project site is located in the vicinity of the Eskisehir Fault Zone, pseudo-static and dynamic stability of the site were also evaluated. As a result, the most suitable slope remediation technique was determined to be a combination of surface and subsurface drainage, application of rock buttress at the toe of the landslide and unloading of the landslide material.

Subject Keywords

Coupled slope stability analyses, Finite element model, Back analysis, Highly weathered rock, Landslide, Giordan, D

URI

https://hdl.handle.net/11511/36843

DOI

https://doi.org/10.1007/978-3-319-09057-3_43

Conference Name

12th International IAEG Congress

Collections

Department of Geological Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Investigation of the failure mechanism and stabilization of a landslide in weathered tuffite, Giresun, northeastern Turkey Avsar, Ozgur; Akgün, Haluk; Kockar, Mustafa Kerem (2014-11-01) This study investigates the causes and failure mechanism of the Aksu landslide that occurred during the construction of the Giresun-Espiye road between KM: 1 + 030-1 + 170 in northern Turkey and recommends proper stabilization techniques. For the purpose of investigating the causes and mechanism of this slope failure, engineering geological mapping, geotechnical investigation and rock mass characterization were performed. From top to bottom, weathered tuffite, tuffite, flysch, and dacitic tuffite were the m...
Analysis and remediation of the structurally controlled rock failures during tunneling: A case study along the Black Sea coastal highway in northern Turkey Koçkar, M.k.; Muratlı, S.; Akgün, Haluk (2018-06-22) In this study, the stability assessment and the analysis of the structurally controlled rock failures in the Geçilmez tunnel, which was constructed in Giresun, along the Black Sea coastal highway was performed. The rock mass classification of the tunnel grounds was completed and the geomechanical parameters that were necessary for the stability analysis and for the design of the tunnel were determined. The structurally controlled instabilities, i.e., inactive probable faults and shear zones within the tunne...
Seismic performance assessment of reinforced concrete overpass bridges with nonlinear analyses Cantürk, Tolga; Baran, Eray; Department of Civil Engineering (2022-2) In this study, seismic performance assessment of reinforced concrete overpass bridges located along the currently under construction Kınalı-Tekirdağ-Çanakkale-Savaştepe Highway was conducted. Overpass bridges consisted of two-span precast concrete girders and reinforced concrete cast-in-place circular cross section columns. Because of proximity to active faults detailed seismic investigation of the region had already been conducted and site-specific seismic design spectrums had been developed. Structural de...
Modelling the variability in seismically induced slope displacements due to ground motion selection Özmen, Burak Oka; Gülerce, Zeynep; Department of Civil Engineering (2019) Assessing the earthquake performance of a slope and estimating the seismically-induced slope displacements is one of the most complicated tasks in geotechnical earthquake engineering. The source of the complication includes: i) defining the soil properties and their variability within the limits of the available geological/geotechnical information, and ii) executing a proper ground motion selection and scaling procedure for the dynamic numerical analysis, which are generally limited in number for most of th...
Geotechnical investigations and preliminary support design for the Gecilmez tunnel: A case study along the Black Sea coastal highway, Giresun, northern Turkey Akgün, Haluk; Kockar, Mustafa Kerem (2014-02-01) This study encompasses geotechnical investigations, stability assessments and design of the preliminary support systems for the Gecilmez tunnel which is constructed in Giresun for the improvement of the highway along the Black Sea coast. During the study, a detailed geological map of the study area was prepared and the geotechnical characteristics of the rock masses were determined. The rock mass classification of the tunnel grounds was performed by utilizing the RMR method, Q system, NATM and the Geologica...

Citation Formats

D. G. ORAL, H. Akgün, and M. K. Kockar, “Characterization and Assessment of Large Landslide Movement Along the Bursa-Inegol-Bozuyuk Highway in Turkey,” presented at the 12th International IAEG Congress, Torino, ITALY, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36843.