Stability analysis for the landfill Jakusevec

The paper deals with the results of the slope stability analysis of the landfill "Jakusevec", the main waste dump of Zagreb, the capital of the Republic of Croatia. The dump has been used since 1960s for disposal of various kinds of waste. As the leachate from the dump may have a negative impact on the city drinkable water supply and distribution system, a reconstruction of the dump into a sanitary landfill started a few years ago. Two methods were used for calculation of the slope stability: the SLOPE/W computer program was applied for calculation using the Bishop's simplified method of limit equilibrium analysis ; also, numerical modelling was made by using the finite difference code FLAC. The results of the two types of analysis were compared from the point of view of the calculated safety.