Review of support systems used in poor ground conditions in platinum room and pillar mining: A Zimbabwean case study.

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dc.citation.doiDOI: 10.17159/2411-9717/2016/v116n4a4en_ZA
dc.citation.epage332en_ZA
dc.citation.issue4en_ZA
dc.citation.spage323en_ZA
dc.contributor.authorChikande, T.
dc.contributor.authorZvarivadza, T.
dc.date.accessioned2017-02-14T06:18:49Z
dc.date.available2017-02-14T06:18:49Z
dc.date.issued2016-04
dc.descriptionPaper written on project work carried out in partial fulfillment of BSc. (Mining Engineering).en_ZA
dc.description.abstractFalls of ground pose costly hazards to personnel and equipment and thus measures should be taken to prevent them. This study endeavours to improve the support systems used in geotechnically poor ground at a Zimbabwean platinum mine by analysing the status quo and recommending an effective support system. Various techniques were used to determine the quality of ground conditions, predict the rock mass behaviour, and to identify the appropriate rockbolt type. An analysis of the current ground control methods and their limitations was also undertaken. The results showed that the current support system and mining practices in poor ground need to be modified to improve safety and productivity. Stoping overbreak is influenced by poor ground conditions and the explosives currently used. The use of emulsion is recommended to replace ANFO. Redesigning of pillars is also recommended in poor ground conditions. An evaluation of the current roofbolt system indicated an opportunity for improvement. With new insight on the performance of the shorter length roofbolts currently in use, a new support system was recommended taking into consideration cost-benefit analysis. Barring down using pinch bars in poor ground was seen as a risky and time-consuming exercise, hence the use of mechanical scalers is recommended to achieve zero harm and to meet production targets. Smoothwall blasting is recommended in poor ground to minimize excavation damage. Other recommendations include the use of hydrological surveys to determine groundwater levels and implement corrective measures. Both empirical and numerical modelling approaches need to be utilized in determining the optimum support.en_ZA
dc.description.librarianMvdH2017en_ZA
dc.description.urlhttp://www.saimm.co.za/publications/journal-papersen_ZA
dc.identifier.citationChikande, T. and Zvarivadza, T. 2016. Review of support systems used in poor ground conditions in platinum room and pillar mining: a Zimbabwean case study. Journal of the Southern African Institute of Mining and Metallurgy. 116(4), pp. 323-332. http://dx.doi.org/10.17159/2411-9717/2016/v116n4a4en_ZA
dc.identifier.issn2225-6253
dc.identifier.urihttp://hdl.handle.net/10539/22010
dc.journal.titleJournal of the Southern African Institute of Mining and Metallurgy.en_ZA
dc.journal.volume116en_ZA
dc.language.isoenen_ZA
dc.publisherThe Southern African Institute of Mining and Metallurgy.en_ZA
dc.rights© This Journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.en_ZA
dc.subjectBord and pillar miningen_ZA
dc.subjectExplosivesen_ZA
dc.subjectPillar designen_ZA
dc.subjectRoofboltsen_ZA
dc.subjectSupport systemsen_ZA
dc.subjectCost effectivenessen_ZA
dc.subjectRock mechanicsen_ZA
dc.subjectHydrological surveysen_ZA
dc.subjectZimbabween_ZA
dc.titleReview of support systems used in poor ground conditions in platinum room and pillar mining: A Zimbabwean case study.en_ZA
dc.typeArticleen_ZA
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