Modeling of support system for preventing retrogressive slide of Ambarlı landslide in Avcılar district, Istanbul

Year 2020, Volume: 26 Issue: 8, 1401 - 1407, 10.12.2020

İbrahim Kuşku , Süleyman Dalgıç

https://izlik.org/JA45JG37DS

Abstract

Disaster-prone area is declared as already affected or may be affected by the disasters that have been occurred or are likely to occur in the disaster survey reports. In addition, these areas should be considered to be rehabilitated for technically or economically reasons by means of improvement studies. However, the future impact of the landslide on the settlements located at the boundary of the area determined according to this definition is sometimes not evaluated. Ambarlı Landslide Area located in Istanbul, Avcılar was declared a disaster-prone area in 2005. In the area, 56 buildings became out of use and all the buildings in the area were demolished due to the related regulation. However, during the ongoing process, monitoring studies were not conducted in the area. The landslide situation was left uncontrolled within this period, and risks to which the near structures might be affected were not evaluated. In this study, it is aimed to evaluate the potential of growth of The Landslide Area and the current security conditions in the nearby structures. Previous studies in the field were evaluated and new boreholes were drilled. Index and mechanical characteristics of the soil samples were tested within the scope of the study. Inclinometer measurements were made for 6 months, sliding planes were determined and velocities were calculated for the active landslide. For the current situation, despite the risks determined by static and dynamic stability analyzes, taking into account the structural loads in the impact area, the cantilever type shoring system was modeled, and the safety conditions for the north of the area were defined.

Keywords

Disaster , Landslide , Stability analyzes , Bored pile

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