WIT Press


Landslide In A Catchment Area Of A Torrent And The Consequences For The Technical Mitigation Concept

Price

Free (open access)

Paper DOI

10.2495/DEB100151

Volume

67

Pages

9

Page Range

175 - 183

Published

2010

Size

1,850 kb

Author(s)

F. J. Riedl

Abstract

The focus of the following lies on the identification of the practical solutions by taking into account the theoretical background. A translational landslide occurred on October 2008 within an area of about 2.5 ha on the topographical left side of the torrent \“Wattenbach” in Tyrol/Austria. In the summer of 1965 a large debris flow event of the torrent \“Wattenbach” happened and the underlying city of Wattens was completely destroyed. After this event several technical protection measurements were implemented to guarantee a certain factor of safety for the city of Wattens. After the landslide event of 2008, the most important question concerned the interaction of the torrent \“Wattenbach”, the landslide and which reaction could be expected by a flooding event in the future. To obtain certain quantitative and qualitative data, several analyses (modelling of the landslide by regarding different scenarios, laser scans, field works) were implemented and some of them are still going on. Keywords: landslide, debris flow, torrent, Austrian Federal Service for Torrent, Erosion and Avalanche Control, technical protection measurements, natural hazards. 1 Introduction 1.1 Austrian Federal Service for Torrent, Erosion and Avalanche Control, District Office \“Middle Inn Valley” The main tasks of the Austrian Federal Service for Torrent, Erosion and Avalanche Control are divided into hazard zone planning (risk prevention),

Keywords

landslide, debris flow, torrent, Austrian Federal Service for Torrent, Erosion and Avalanche Control, technical protection measurements, natural hazards