Investigation of Slope Stability of Avnik (Bingöl) Open Pit Iron Mine by Different Methods

Abstract

Avnik iron mine is the most important iron mine in our country, that is located in southeast of Bingöl province. In this study the slope stability of the Avnik iron mine that has a depth of 333 m was examined. In the field works, discontinuity survey was done and discontinuties properties were determined. As a result of the field studies, it was revealed that the metamorphic rocks in the study area have a highly fractured and fissured structure. On the other hand, instabilities with combined failure surfaces developed at two different the open pit mine previously. Corss - sections were taken along the open pit slopes which have critical stability condition and slope stability analyzes were performed on these cross - sections using limit equilibrium and finite element methods for static - dry and dynamic - dry conditions. According to the results of both methods, it wasdetermined that the factor of safety values for the slopes in the north of the open pit decreased in dynamic conditions and approached the critical limit equilibrium state. © 2023, Hacettepe Universitesi Yerbilmleri. All rights reserved.