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Geomorphological and geotechnical causes of anthropogenically induced rock-mass falls in the Wachau-Danube Valley (Bohemian Massif, Lower Austria)

Concepts and implications of environmental change and human impact : studies from Austrian geomorphological research

Auteur(s) et Affiliation(s)

LAIMER, H.J.
Austrian Federal Railways (ÖBB), Infrastruktur AG, Salzburg, Autriche
MÜLLEGER, M.
iC consulenten Ziviltechniker GesmbH, Bergheim, Autriche
KEILER, M.
Inst. of Geography, Univ., Bern, Suisse
Dep. of Geography and Regional Science, Univ., Graz, Autriche
Inst. of Remote Sensing and Photogrammetry, Univ. of Technology, Graz, Autriche
OTTO, J.-C.
Dep. of Geography and Geology, Univ., Salzburg, Autriche


Description :
The Wachau-Danube Valley represents a transverse valley, intersecting the Variscian Bohemian Massif. The exceptional cultural position of the region generated an increasing demand for building materials. Over the centuries quarrying had a sizeable impact on slope morphology. Interdependences between quarrying and construction caused unstable rock slopes and 4 rock-mass falls have occurred at 2 quarries near Spitz (1961, 1984, 2002) and Dürnstein (2009). Rock mechanical analysis at these quarries has shown that the combination of existing geological discontinuities and artificially modified morphology is fatal in terms of slope stability. Remedial measures for both locations are essential to maintain transport infrastructure. Sufficiently stable conditions can only be achieved by extensive reshaping of the mining faces, which involves adapting slope geometries to naturally stable joint faces.


Type de document :
Article de monographie

Source :
Geografiska annaler. Series A. Physical geography, issn : 0435-3676, 2012, vol. 94, n°. 1, p. 157-174, nombre de pages : 18, Références bibliographiques : 33 ref.

Date :
2012

Editeur :
Pays édition : Suede, Stockholm, Svenska sällskapet för antropologi och geografi

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)