Assessment of rockfall hazard around Afyon Castle,Turkey |
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Authors: | Tamer Topal Muge Akin Utku Ahmet Ozden |
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Institution: | (1) Department of Geological Engineering, Middle East Technical University, 06531 Ankara, Turkey;(2) General Directorate of Mineral Research and Exploration, 06520 Ankara, Turkey |
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Abstract: | The Afyon Castle is a tourist destination and a historical site in the City of Afyon in Turkey. The Castle is located on a
steep hill, with a height of 226 m. In close proximity to the Castle there are settlements. The hill consists of trachitic
andesite. The rock contains columnar joints and flow layering. Owing to these discontinuities, blocks of varying sizes had
fallen down. The settlement areas near the Castle are now in danger because of the rockfall risk. In this study, rockfall
analysis was carried out along nine profiles of the hill. Fall-out distance, bounce height, kinetic energy and velocity of
the rocks along each profile were investigated. The results of the analyses were evaluated, and the areas delineated as susceptible
to rockfall risk are highlighted. Remedial measures including rock bolts and protective fences were suggested on the basis
of the field observations and the rockfall risk evaluation. |
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Keywords: | Afyon Castle Andesite Rockfall Risk Zonation map |
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