Landslide stabilization in weathered tuffite, northern Turkey

Avşar, Özgür
A landslide occurred during the construction of the Giresun ا Espiye road between Km: 1+030 ا 1+170 in April 2003. Investigating the causes and mechanism of this slope failure along with suggesting a proper stabilization technique is aimed in this study. For that purpose, a detailed site investigation study, including engineering geological mapping, drilling work, in situ and laboratory tests, was performed. Weathered tuffite, tuffite, flysch and dacitic tuffite, from top to bottom, are the major units in the study area. A أtranslational slideؤ occurred in completely weathered tuffite owing to the disturbance of the stability of the slope by the excavations performed at the toe of the slope; particularly the foundation excavation for the restaurant building and for the road cut for the Giresun ا Espiye road. After establishing the model of the landslide in detail, shear strength parameters of the failure surface were determined by the back analysis method as "cohesion"=2.5 kN/m2 and "friction angle"=9°. Toe buttressing, ground water and surface water drainage options were considered for stabilizing the slope. For the back analysis calculations, the Morgenstern-Price and Spencer methods were used with the aid of the SLOPE/W computer program.


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Ataş, Pelin; Akgün, Haluk; Department of Geological Engineering (2017)
During the road extension works of the Tarsus - Çamlıyayla Provincial Road at KM: 11+640 -12+080, a landslide occurred due to the construction of a steeper slope at the road side for wall construction. The purpose of this thesis is to determine the critical failure location of the landslide and to determine the necessary slope stabilization methods in order to prevent the development of a larger potential landslide that may occur in the future. For this purpose, necessary engineering geological in-situ and ...
Analysis of a highway embankment failure associated with the 1999 Duzce, Turkey earthquake
Bakır, Bahadır Sadık (Elsevier BV, 2005-04-01)
An embankment slope on a major highway totally collapsed during 12 November 1999 Duzce earthquake (M-w = 7.1) due to the intense near field ground motion. The slope had performed satisfactorily, without even minor deformations or cracks, during the Izmit earthquake (M-w = 7.4), another major event that occurred 3 months before and was far field. Predominantly coarse-grained fill of the embankment exhibited typical non-brittle behavior during laboratory tests, implying that the prefailure shear strength woul...
Citation Formats
Ö. Avşar, “Landslide stabilization in weathered tuffite, northern Turkey,” M.S. - Master of Science, Middle East Technical University, 2004.