Case Study: Numerical Simulations of Debris Flow below Stože, Slovenia
Publication: Journal of Hydraulic Engineering
Volume 132, Issue 2
Abstract
In November 2000 a landslide–debris flow with a volume of slid down from Stože Mountain in NW Slovenia. It partly or totally destroyed 23 buildings in the village of Log pod Mangartom and killed 7 people. As landslides of the same or even greater initial mass could endanger the village in the future, numerical simulations of these possible events were carried out. A hazard map of the area, and the most effective protection measures were determined in detail. A one-dimensional model DEBRIF1D, developed from a dam-break flow model, was used for simulations along the canyon in the upper part of the reach. Downstream, in the region of the village, two two-dimensional models were used: a newly developed PCFLOW2D, and a commercial model FLO-2D. The three models were calibrated by field measurements. A special feature of the DEBRIF1D model enables direct computation of the initial hydrograph. Validity of the quadratic equation expressing the resistance was roughly confirmed by field measurements, and a comparison of the accuracy and applicability of the three models is given.
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Acknowledgments
This research work was funded by the Slovene Ministry of the Environment, Spatial Planning and Energy. The writers wish to thank Professor Takahashi, Professor Bojan Majes, Dr. Anica Petkovsek, and Dr. Janko Logar for the useful discussion during the preparation of manuscript.
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Information & Authors
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Published In
Journal of Hydraulic Engineering
Volume 132 • Issue 2 • February 2006
Pages: 121 - 130
Copyright
© 2006 ASCE.
History
Received: Jan 5, 2004
Accepted: Apr 27, 2005
Published online: Feb 1, 2006
Published in print: Feb 2006
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