A STUDY OF THE MECHANISM OF FLEXURAL TOPPLING FAILURE OF ROCK SLOPES

Citation
Dp. Adhikary et al., A STUDY OF THE MECHANISM OF FLEXURAL TOPPLING FAILURE OF ROCK SLOPES, Rock mechanics and rock engineering, 30(2), 1997, pp. 75-93
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Geosciences, Interdisciplinary","Engineering, Civil
ISSN journal
0723-2632
Volume
30
Issue
2
Year of publication
1997
Pages
75 - 93
Database
ISI
SICI code
0723-2632(1997)30:2<75:ASOTMO>2.0.ZU;2-8
Abstract
The mechanism of flexural toppling failure of jointed rock slopes has been investigated through a series of centrifuge experiments conducted on models manufactured from two types of materials (brittle: a sand-g ypsum mixture; and ductile: fibre-cement sheeting). The basal failure plane observed in the centrifuge models, has been found to emanate fro m the toe of the slope, and orient at an angle of 12 to 20 degrees upw ard from the normal to the discontinuities. A theoretical model based on a limiting equilibrium approach (Aydan and Kawamoto, 1992) has been adopted to analyse the centrifuge test data. After calibration, the m odel was found to accurately predict the failure load for all the test s reported in this study. Using this model, a set of charts has been p repared to assist with the analysis of slopes susceptible to flexural toppling.