caa a22 4500 46317478X CHVBK 20180406164822.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s00603-006-0085-8 doi (NATIONALLICENCE)springer-10.1007/s00603-006-0085-8 Modelling of Progressive and Instantaneous Failures of Foliated Rock Slopes [Elektronische Daten] [D. P. Adhikary, A. V. Dyskin] Summary: Mechanisms of flexural toppling failure of slopes in foliated rock masses are investigated both experimentally by testing small scaled models in a centrifuge and theoretically by using a limiting equilibrium model and a finite element model based on the Cosserat theory. Both theoretical models include bending moments of rock layers in their formulation. Two main failure mechanisms are observed: (1) instantaneous failure involving a large volume of failed material and (2) progressive failure where the fracture initially localises near the toe region and then progresses further into the rock mass with increasing load. These two mechanisms of slope failure are observed to be controlled by the magnitude of the joint friction angle. The joint friction angles of about 20° and above are most likely to cause instantaneous failure while the lesser friction angles result in a progressive failure. Joint cohesion is not found to have a similar effect on the failure mechanisms, provided that it is low enough to allow sliding between the rock layers - a prerequisite for flexural toppling. Springer-Verlag, 2006 Keywords: Rock slope, flexural toppling, Cosserat theory, centrifuge experiment nationallicence Adhikary D. P. CSIRO Exploration and Mining, Kenmore, Australia aut Dyskin A. V. Department of Civil and Resource Engineering, University of Western Australia, Sydney, Australia aut Rock Mechanics and Rock Engineering Springer-Verlag 40/4(2007-08-01), 349-362 0723-2632 40:4<349 2007 40 603 https://doi.org/10.1007/s00603-006-0085-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00603-006-0085-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Adhikary D. P. CSIRO Exploration and Mining, Kenmore, Australia aut NATIONALLICENCE 700 1- Dyskin A. V. Department of Civil and Resource Engineering, University of Western Australia, Sydney, Australia aut NATIONALLICENCE 773 0- Rock Mechanics and Rock Engineering Springer-Verlag 40/4(2007-08-01), 349-362 0723-2632 40:4<349 2007 40 603 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer