ABSTRACT
The Eiblschrofen rock slope is built up by two dolomite blocks which are steeply dipping into the slope and resting downslope on sandstones intercalated by marl layers, also steeply dipping into the slope. The dolomite blocks themselves are retaining schists atop of them. The complexity of the situation is increased by medieval ore mines and by a modern underground mine excavating the dolomite rock. The displacements ascertained by geodetic observations revealed a distinct behaviour of the complex system. Numerical investigations by FLAC3D, UDEC and 3DEC modelling the rock blocks, the faults between them and the main joint sets were used to interpret the system behaviour over time. Due to the large rock volume in danger of falling, the construction of embankments creating retaining basins were the only protective measures possible. Due to the limited retaining capacity of the basins the monitoring program and the interpretation of the monitoring results will have to play an important role in warning of larger events in the future.
