Slope stability assessment of rock masses in western sector of balıkesir Şamlı eastern open pit iron mine [Şamlı (Balıkesir) demir madeni doğu ocağı batı Şevlerini oluşturan kaya kütlelerinin duraylılık değerlendirmesi]

The slope stability of rock masses which the engineering constructions build on is controlled by the strength parameters of discontinuity surfaces rather than shear strength parameters of rock bodies. in addition,it is known that the aperture,persistence,roughness,and if it presents,thickness and type of infill materials are the major parameters which control the strength of discontinuities. in this study,the shear strength parameters of discontinuities in the hornfels lithology in the doğu ocak (eastern sector of balıkesir-şamlı-iron open pit mine) were determined by using the barton empirical failure criterion. the probable rock slope failure modes were established by means of kinematic analyses performed considering the orientations and shear strength parameters (cohesion and internal friction angle) of discontinuity surfaces. it is proposed that the orientation of the slopes are 218° in northern side and 15° in southern side whereas bench slopes are 65° and 60° in w3 and w3-w4 weathering zones respectively,in accordance with the stability analyses performed in the light of the information obtained from the models in the doğu ocak. © 2016,tmmob - jeoloji muhendisleri odasi. all rights reserved.