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dc.contributor.authorCain, Sarah
dc.contributor.otherQueen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))en
dc.description.abstractCanadian and International experts agree that deep underground repositories are the single best solution regarding safe, long-term nuclear waste disposal (IAEA 2009). Numerous European and Asian countries have already begun extensive research and preliminary design analyses associated with site assessment for high-level fuel storage facilities known collectively as deep geological repositories (DGRs) (ANDRA 2005, Armand et al. 2003, NAGRA 2002, Martino and Chandler 2004). In Canada, Kincardine, ON, is currently the proposed site that will host the low- to medium-level nuclear waste generated from the Bruce, Pickering and Darlington nuclear power plants. The project conceptualization, as well as the specific sites, have undergone extensive public critique and analyses. The project is in the final licensing stage of the process. To ensure long term stability and safety of the DGRs, the prediction and understanding of the excavation damage zone (EDZ) around the associated shafts, placement room tunnels, storage voids and access tunnels is paramount. The general EDZ consists of component zones of damaged, fractured and influenced rock moving radially away from the center of the excavation. The outer “influenced” zone consists of rock that has been elastically strained, while the “damaged” zone undergoes small scale, discontinuous crack damage, subsequently increasing the permeability of the surrounding rockmass. The “fractured” zone is located nearest to the excavation wall/face, where continuous (connected) fractures dominate. Numerous details within a preliminary design of the tunnels and intersections within a DGR will influence the development and ultimate impact of the EDZ on ultra-long-term repository safety. For the various DGR tunnelling projects that include the placement room tunnels, access tunnels and vertical shafts, details of shape will dictate the ultimate support demands and safety requirements. Using case examples, as well as 2-dimensional and 3-dimensional continuum numerical modelling simulations, this thesis will illustrate key impacts of macro-geometry choices, such as shape and dimensions of placement room and access tunnels, as well as details, which include corner geometry, aspect ratio, excavation sequence and methodology, on EDZ and highly damaged zone (HDZ) development in underground infrastructure.en_US
dc.relation.ispartofseriesCanadian thesesen
dc.rightsAttribution-NoDerivs 3.0 United States*
dc.rightsQueen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canadaen
dc.rightsProQuest PhD and Master's Theses International Dissemination Agreementen
dc.rightsIntellectual Property Guidelines at Queen's Universityen
dc.rightsCopying and Preserving Your Thesisen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectNumerical Modellingen_US
dc.subjectBrittle Rockmassen_US
dc.subjectExcavation Damage Zoneen_US
dc.subjectDeep Geological Repositoryen_US
dc.titleA Continuum Modelling Study of Macro-Geometry choices and Their Impact on Excavation Damage Zone Development in Brittle Rock at Depthen_US
dc.description.degreeMaster of Applied Scienceen_US
dc.contributor.supervisorDiederichs, Mark
dc.contributor.departmentGeological Sciences and Geological Engineeringen_US

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Except where otherwise noted, this item's license is described as Attribution-NoDerivs 3.0 United States