WLS Report 56-1: Monitoring Lattenbach: Basics for the prognosis of debris flows, installation of measuring systems and event documentation, on behalf of the Forest Technical Service¿s local authority Upper Inn-valley
Abstract
In the catchment area of Lattenbach the tectonic border between Silvrettakristallin and the northern limestone alps is located, whereby spacious mass movements arise. The Lattenbach erodes the toe of the slide slope. Therefore viscous debris flows are arising frequently. Numerous buildings of the village Pians are endangered by events of debris flows by a blockage of the bridge of the old federal highway bridge (B171) and/or during overburding the channel due to the too small transportation capacity in the channel. Debris flows accumulated frequently in the receiving stream (Sanna), whereby the buildings at the banks of the receiving stream were inundated. The defense works could prevent this partially and/or not always. A goal of the project is the establishment of a monitoring system, including precipitation and discharge quantities, which are supplemented with event documentations to determine rheological parameters. The triggering sum of precipitation and their intensities are to be determined and thus triggering values for the release of debris flows can be derived. The data can be used for a warning and an evacuation at the settlement. The monitoring is to be operated on a long-term basis, i.e. during the project period in order to receive comprehensive data of the relationship between precipitation and triggering of debris flows.
keywords Warning System of Debris Flows
Publikationen
Project staff
Johannes Hübl
Univ.Prof. Dipl.-Ing. Dr.nat.techn. Johannes Hübl
johannes.huebl@boku.ac.at
Tel: +43 1 47654-87111
Project Leader
17.08.2001 - 31.12.2003
Roland Kaitna
Assoc. Prof. Dr. Roland Kaitna
roland.kaitna@boku.ac.at
Tel: +43 1 47654-87113
Project Staff
17.08.2001 - 31.12.2003
BOKU partners
External partners
Fa. Sommer
none
coordinator
WLV Gebietsbauleitung Oberes Inntal
none
partner
Lawinenwarnddienst Tirol, 6020 Innbruck, Herrengasse 1-3
none
partner
Hydrograph. Dienst Innsbruck, 6020 Innstbruck, Herrengasse 1-3
none
partner
Technisches Büro Gschwendtner
none
partner