Long-term stability of the final slopes of the mining waste dumps from Oltenia

The waste dumps resulted from the lignite exploitation activities Oltenia are constructions that reach, in most cases, impressive dimensions and store large volumes of sterile rocks. Usually, arranged ecologically restored, but between moment their release technological tasks beginning arrangement works, periods time, measured even years, can pass. calculations regarding geometry performed design stage, taking into account mechanical strength characteristics mixture material forms them, so as to ensure a sufficient stability reserve during construction period when projected storage capacity is achieved. If ecological restoration works do not start immediately after depositing activity stopped, exposure loose disaggregated influence external factors (especially erosion rainfall infiltration) lead landslides with disastrous consequences on natural anthropogenic objectives located area. This paper analyzes elements under normal operating conditions, modification over time required final phase long-term stability.