EXPLORING THE EFFECT OF LANDSLIDE MITIGATION AND PROTECTION MEASURES UNDER SIMULATED HAZARD SCENARIOS

The implementation of effective disaster risk reduction measures is a challenging task, as not only the climate is changing, but natural processes are continuously influenced by humans. The Hofermühle sub-catchment area in Waidhofen a.d. Ybbs (Austria) is considered one of those exemplary case studies within the Flysch Zone, in which the physical processes and anthropogenic influence on the landslide dynamics become clear. In 2013, heavy rainfall triggered a rotational landslide that developed into a mudflow in the lower part of the catchment. In response to this event, the authorities constructed a diversion dam and a series of drainage systems to protect downstream infrastructure. This study aims to integrate the field-based monitoring data into time-series analyses and run-out simulations to understand the slope evolution after the interventions and to evaluate the effectiveness of the constructed dam under different potential hazard scenarios.