ABSTRACT:

Tailings dams are designed to handle large volumes of waste material from mining operations, thereby their stability has primary importance for sustainability of the mine environment. This paper investigates two-dimensional stability analysis of recently raised condition of Eti copper mine tailings dam; located in Kastamonu, Turkey. To evaluate stability of the tailings dam, the most critical cross section of the dam was analyzed with finite element method. Long-term stability analysis was performed with PHASE 2 v.8.01 finite element program and shear strength reduction method was utilized. Dam behavior was examined under static loading conditions by considering the different ponded water levels and slime-sand boundary positions. The main reason for this comparative parametric analysis is that it is hard to define ponded water level and exact location of boundary between slime-sand materials within the pond. it was found that increased ponded water level resulted in lower safety factor below the acceptable levels. The location of slime-sand boundary effected the results only when the ponded water level is high, otherwise the results were nearly the same.

1. INTRODUCTION
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