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Author(s):	Herbst, Martin; Konietzky, Heinz
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Abstract:	Statements about stability, weathering behaviour and possible rockfalls affecting a real rock massif were made possible by creating a 3D surface/volume model, using as example the “Großer Wehturm” rock massif, using the high-resolution laser scanning process together with rock mechanical 3D model calculations. The emphasis of this paper is the mathematical modelling, particularly the generation of the 3D model from the surface point cloud and the simulation possibilities. The numerical calculations are based on the Discrete Element Method, considering the rock matrix and joint or bedding interfaces. The 3D modelling delivers, in addition to answers to questions about the extent and degree of deformations and movement mechanisms, knowledge relevant to the transfer of the procedure to other locations. Aussagen zu Standsicherheit, Verwitterungsverhalten und möglichen Felsstürzen an konkreten Felsmassiven wurden mittels der Erstellung und Auswertung eines 3D-Oberflächen-/Volumenmodells am Beispiel des Felsmassivs “Großer Wehturm” unter Nutzung des hochauflösenden Laserscansverfahrens mit kombinierter felsmechanischer 3D-Modellberechnungen durchgeführt. Der Schwerpunkt dieser Veröffentlichung liegt auf der Numerik, insbesondere der 3D-Modellgenerierung aus der Oberflächenpunktwolke und den Simulationsmöglichkeiten. Die numerischen Berechnungen basieren auf der dreidimensionalen Diskreten Elemente Methode unter Berücksichtigung der Gesteinsmatrix und Kluft- bzw. Schichtgrenzen. Die 3D-Modellierung liefert neben Antworten auf Fragen zu Umfang und Ausmaß von Deformationen und Bewegungsmechanismen auch Erfahrungen bzgl. der Übertragung auf andere Standorte.
Source:	Geomechanics and Tunnelling 5 (2012), No. 4
Page/s:	379-388
Language of Publication:	English/German

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