A numerical modelling case study - correlation of ground support instrumentation data with a three dimensional inelastic model

Gordon Sweby, Phillip Dight, Yves Potvin

Research output: Chapter in Book/Conference paperConference paper

Abstract

As a sub-project of the industry-sponsored initiative GSSO (Ground Support Systems Optimisation Project) being delivered by the Australian Centre for Geomechanics (University of Western Australia), a numerical modelling exercise has been carried out using ground support instrumentation and rockmass data acquired at George Fisher Mine (part of Glencore’s Mount Isa Mines operation) in Mount Isa, Queensland, Australia. The aim of the modelling was to attempt to correlate field measurements with model results, using a commercially available numerical modelling package with realistic rockmass parameters. The over-arching aim of the project is to assess the limits of applicability of numerical modelling in ground support system design. The three dimensional inelastic code FLAC3d (Itasca) was selected due to its capability to model a realistic mine-wide geometry while providing sufficient detail in the instrumentation sites' areas of interest. Flac3d also has the constitutive models and support element formulations which make it possible to incorporate the field measurements acquired during the monitoring campaign. Results in terms of excavation closure, cable loads and fibrecrete load correlation are presented and discussed. Implications for ground support system design are raised.
Original languageEnglish
Title of host publication8th International Symposium on Ground Support in Mining and Underground Construction
EditorsE. Nordlund, T.H. Jones, A. Eitzenberger
PublisherGround Support 2016
Number of pages16
Publication statusPublished - 2016
Event8th International Symposium on Ground Support in Mining and Underground Construction - Lulea, Sweden
Duration: 12 Sep 201614 Sep 2016

Conference

Conference8th International Symposium on Ground Support in Mining and Underground Construction
Abbreviated titleGround Support 2016
CountrySweden
CityLulea
Period12/09/1614/09/16

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Sweby, G., Dight, P., & Potvin, Y. (2016). A numerical modelling case study - correlation of ground support instrumentation data with a three dimensional inelastic model. In E. Nordlund, T. H. Jones, & A. Eitzenberger (Eds.), 8th International Symposium on Ground Support in Mining and Underground Construction Ground Support 2016.