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http://dx.doi.org/10.7843/kgs.2008.24.5.65

A Study on Jointed Rock Mass Properties and Analysis Model of Numerical Simulation on Collapsed Slope  

Koo, Ho-Bon (Geotechnical Disaster and Environ. Research Div., KICT)
Kim, Seung-Hee (Geotechnical Disaster and Environ. Research Div., KICT)
Kim, Seung-Hyun (Geotechnical Disaster and Environ. Research Div., KICT)
Lee, Jung-Yeup (Geotechnical Disaster and Environ. Research Div., KICT)
Publication Information
Journal of the Korean Geotechnical Society / v.24, no.5, 2008 , pp. 65-78 More about this Journal
Abstract
In case of cut-slopes or shallow-depth tunnels, sliding along with discontinuities or rotation could play a critical role in judging stability. Although numerical analysis is widely used to check the stability of these cut-slopes and shallow-depth tunnels in early design process, common analysis programs are based on continuum model. Performing continuum model analysis regarding discontinuities is possible by reducing overall strength of jointed rock mass. It is also possible by applying ubiquitous joint model to Mohr-Coulomb failure criteria. In numerical analysis of cut-slope, main geotechnical properties such as cohesion, friction angle and elastic modulus can be evaluated by empirical equations. This study tried to compare two main systems, RMR and GSI system by applying them to in-situ hazardous cut-slopes. In addition, this study applied ubiquitous joint model to simulation model with inputs derived by RMR and GSI system to compare with displacements obtained by in-situ monitoring. To sum up, numerical analysis mixed with GSI inputs and ubiquitous joint model proved to provide most reliable results which were similar to actual displacements and their patterns.
Keywords
Cut-slope; FLAC; GSI; RMR; Ubiquitous joint model;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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