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Comparison of Rock Mass Classification Methods  

Park Chul-Whan (한국지질자원연구원 지반안전연구부)
Park Chan (한국지질자원연구원 지반안전연구부)
Synn Joong-Ho (한국지질자원연구원 지반안전연구부)
Publication Information
Tunnel and Underground Space / v.16, no.3, 2006 , pp. 203-208 More about this Journal
Abstract
This report is to introduce an article to compare 3 kinds of methods as RMR, Q-system and RMi published in Tunnel and Tunnelling Technology 2003. As rock mass classification is applied to estimate the amount of the support as an empirical design method, an attempt has been made to evaluate the parameters for classifications and their variations by Professor Nilsen and his team in Norway. Representability and reproducibility in measuring the field parameters are discussed and sensitivity of rating values in the three methods is also analyzed in this research. Although some parameters have high variation in rating among the 5 observers, the rock mass class has been found to be quite similar.
Keywords
Rock mass classification; RMR; Q-system; RMi; Variation of parameter;
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  • Reference
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