Prediction of strength and deformability of an interlocked blocky rock mass using UDEC

Alshkane, Younis Mustafa Ali, Marshall, Alec M. and Stace, L.R. (2017) Prediction of strength and deformability of an interlocked blocky rock mass using UDEC. Journal of Rock Mechanics and Geotechnical Engineering, 9 (3). pp. 531-542. ISSN 1674-7755

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The accurate prediction of strength and deformability characteristics of a rock mass is very challenging. In practice, properties of a rock mass are often estimated from available empirical relationships based on the uniaxial compressive strength (UCS). However, UCS does not always give a good indication of in-situ rock mass strength and deformability. The aim of this paper is to present a methodology to predict the strength and deformability of a jointed rock mass using UDEC (universal distinct element code). In the study, the rock mass is modelled as an assemblage of deformable blocks that can yield as an intact material and/or slide along pre-defined joints within the rock mass. A range of numerical simulations of UCS and triaxial tests were conducted on rock mass samples in order to predict the equivalent mechanical properties for the rock mass under different loading directions. Results are compared against the deformability parameters obtained by analytical methods.

Item Type: Article
Keywords: Strength, Deformability, Rock mass, Universal distinct element code
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Civil Engineering
Identification Number:
Depositing User: Eprints, Support
Date Deposited: 07 Apr 2017 08:27
Last Modified: 04 May 2020 18:47

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