FEM and LEM stability analyses of the fatal landslides at Çöllolar open-cast lignite mine in Elbistan, Turkey

摘要: On February 2011, two landslides took place in Collolar the lignite mine within 1 week. The first landslide, which occurred at permanent slopes located southwest of pit, resulted one fatality and temporary cessation production activities. Four days later, a second larger than first, (northeast same pit). with volume about 50 Mm3 soil, ten fatalities including geological mining engineers. In present study, series numerical analyses were carried out using finite element method limit equilibrium to evaluate factors that caused landslides. Three different depths considered for level ground water table. safety found be around or less even if groundwater table was relatively low. It concluded landslide happened possibly due high continuously fed by Hurman River. other hand, despite higher factors, failure triggered probably instability introduced landslide.