Ph.D. Tezi Görüntüleme
Rock Slope Stability Analyses by Probability Method and Excavabilty inTasönü Limestone Quarry (Trabzon)
In this study, stability of the slopes formed after these landslides in TasönüLimestone quarry was investigated by probabilistic methods. The quarry was opened Late
Campanien-Paleocene aged limestone in various fasies of Kireçhane Formation.Production of raw materials was decreased and legal problems occurred because of plane
failures in 2005 and 2006 years. This quarry was providing the most of the demand for theraw material Askale Trabzon Cement Factory before landslides.
The friction angle and cohesion of the failure plane in clayey layer formed fromweathering of the red colored carbonated tuff are found to be 9-160 and 10-60 kPa
respectively as the result of back analyses.It tried to determine the acceptable probability of failure (%Pf) and reliability index
(b) by analyzing stable and unstable slope based on Monte Carlo Simulation Technique.According to the analysis, if Pf%10 b1.3 then the slope investigated is stable.
The stability analyses of the slopes after landslides were performed by Monte Carlomethod. Then It was concluded that these are unstable. Even if there is not the effect of
water, the failure can be formed in these slopesMonitoring system must be established in the tensile crack on the slopes after
landslides urgently. Also, 1/1000 scaled mapping was prepared for rocks formed fromvarious fasies. And each units considering engineering behavior was separated as
homogeneous area. Discontinuity properties of geotechnical units were measured. And itwas determined that the best evaluation of the excavability can be with excavability index.
In addition to, the slopes to north was done design. For the suggested design profiles,overall slope angle is range between 30-350 and heigth and width of bench are respectively
range between 6-9 meters, 8-10 metersKey Words: Tasönü Limestone Quarry, Planer Failure, Back Analyze, Monte Carlo
Method, Properties of Discontinuity, Excavability, Trabzon