Geological Model Analysis on the Depth of Toppling Deformation in the Anti-dip Rock Slopes
PANG Bo;ZHENG Da;HUANG Peng;State Key Laboratory of Geological Hazard Prevention and Geological Environment Protection,Chengdu University of Technology;
The study focuses on the depth of toppling deformation occurred in the anti-dip rock slopes with the consideration of the time-sensitive characteristics of the development process. The proposed rheological model is modified on the basis of the Kelvin model,which consider the rock layers as curved cantilevers that are subject to self-weight and inter-layer stresses. The mode estimates the depth of the bended rock layers by using the fixed column base as the zero deformation point,of which the results facilitate the determination of the possibility of toppling failure. The proposed model revealed that the depth of the toppling failure is governed primarily by the lithological condition and localized geological setting of the slope,whereas the possibility of toppling failure largely depends on the strata inclination,slope angle,and interlayer internal friction angle. The study aids to the understanding on the magnitude of toppling deformation and slope stability analysis.
【CateGory Index】： TU45