Investigating the use of polymer-modified cementitious thin spray-on liners as stope face support

dc.contributor.authorDu Plessis, M.
dc.contributor.authorMalan, D.F. (Daniel Francois)
dc.contributor.emailfrancois.malan@up.ac.zaen_ZA
dc.date.accessioned2021-07-05T13:06:08Z
dc.date.issued2021-06
dc.description.abstractThis paper investigates the use of a thin spray-on liner (TSL) as stope face support in narrow width tabular stopes. The application of areal support is difficult in these stopes because of the small stoping width and the large area of hanging wall that is exposed by the long face lengths and regular blasting. A simple analytical model of a collapsing block supported by a TSL is explored to determine the parameters to be considered for underground use of the liners. Most literature on TSL focusses mostly on specialised laboratory testing. Almost no large scale testing to determine TSL strengths, when it is applied to blocky rock masses, has been conducted. To simulate the discontinuous nature of the hanging wall in mining stopes, a large scale rig and test methodology was developed. Four different polymer-modified cementitious TSL products were tested and the results are described in the paper. For the particular experimental setup and a curing time of 24 h, the maximum load carrying capacity of the strongest TSL was 305 kg, while a 50 mm thick shotcrete had a capacity exceeding 1100 kg. The test results indicate that care should be exercised when attempting to use a TSL as a structural element in support systems.en_ZA
dc.description.departmentMining Engineeringen_ZA
dc.description.embargo2022-04-22
dc.description.librarianhj2021en_ZA
dc.description.urihttp://www.elsevier.com/locate/ijrmmsen_ZA
dc.identifier.citationDu Plessis, M. & Malan, D.F. 2021, 'Investigating the use of polymer-modified cementitious thin spray-on liners as stope face support', International Journal of Rock Mechanics and Mining Sciences, vol. 142, art. 104728, pp. 1-12.en_ZA
dc.identifier.issn1365-1609 (print)
dc.identifier.issn1873-4545 (online)
dc.identifier.other10.1016/j.ijrmms.2021.104728
dc.identifier.urihttp://hdl.handle.net/2263/80728
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2021 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in International Journal of Rock Mechanics and Mining Sciences. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in International Journal of Rock Mechanics and Mining Sciences, vol. 142, art. 104728, pp. 1-12, 2021. doi : 10.1016/j.ijrmms.2021.104728.en_ZA
dc.subjectThin spray-on liner (TSL)en_ZA
dc.subjectTabular stopesen_ZA
dc.subjectAreal supporten_ZA
dc.subject.otherEngineering, built environment and information technology articles SDG-04
dc.subject.otherSDG-04: Quality education
dc.subject.otherEngineering, built environment and information technology articles SDG-08
dc.subject.otherSDG-08: Decent work and economic growth
dc.subject.otherEngineering, built environment and information technology articles SDG-09
dc.subject.otherSDG-09: Industry, innovation and infrastructure
dc.subject.otherEngineering, built environment and information technology articles SDG-11
dc.subject.otherSDG-11: Sustainable cities and communities
dc.subject.otherEngineering, built environment and information technology articles SDG-12
dc.subject.otherSDG-12: Responsible consumption and production
dc.subject.otherEngineering, built environment and information technology articles SDG-13
dc.subject.otherSDG-13: Climate action
dc.titleInvestigating the use of polymer-modified cementitious thin spray-on liners as stope face supporten_ZA
dc.typePostprint Articleen_ZA

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