A quantitative correlation between the mining rock mass rating and in-situ rock mass rating classification systems

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dc.contributor.author Dyke, Gregory Paul
dc.date.accessioned 2008-05-20T11:20:08Z
dc.date.available 2008-05-20T11:20:08Z
dc.date.issued 2008-05-20T11:20:08Z
dc.identifier.uri http://hdl.handle.net/10539/4858
dc.description.abstract The three most common rock mass classification systems in use in the South African mining industry today are Bieniawski’s (1976) Geomechanics or RMR System, Barton et al.’s (1974) Q-System and Laubscher’s (1990) MRMR System respectively. Of these three systems, only the MRMR Classification System was developed specifically for mining applications, namely caving operations. In response to the increased use of the MRMR Classification System in the mining industry, and concerns that the MRMR System does not adequately address the role played by discontinuities, veins and cemented joints in a jointed rock mass, Laubscher and Jakubec introduced the In-Situ Rock Mass Rating System (IRMR) in the year 2000. A quantitative comparison of the MRMR and IRMR Classification Systems has been undertaken to determine a correlation between the two classification systems, the results of which indicate that there is not a major difference between the resultant rock mass rating values derived from the two Classification Systems. Therefore, although the IRMR System is more applicable to a jointed rock mass than the MRMR System, the MRMR System should not be regarded as redundant, as it still has a role to play as a mine design tool. en
dc.format.extent 945233 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.subject rock mass classification en
dc.subject In-Situ Rock Mass quality en
dc.subject Mining Rock Mass Rating System en
dc.subject In-Situ Rock Mass Rating System en
dc.title A quantitative correlation between the mining rock mass rating and in-situ rock mass rating classification systems en
dc.type Thesis en


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