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A Study on the Uncertainty of the Classification of Rook Mass Rating  

Lee Sang-Eun ((주)삼보기술단)
Jun Sung-Kwon ((주)삼보기술단)
Kang Sang-Jin (현대산업개발(주))
Publication Information
Tunnel and Underground Space / v.15, no.6, 2005 , pp. 441-451 More about this Journal
Abstract
It is the unavoidable problem that the RMR rock classification method has the uncertainty resulted from uncertain definition of measured value in RMR grade table, hence in this paper, the estimation of probability density function$(p{\cdot}d{\cdot}f)$ graph with the evaluation of continuos RMR and the Monte Carlo Simulation and statistic reasoning were carried out to evaluate the uncertainty quantitatively. Also, the modified RMR rock classification table was presented in order to apply the uncertainty of RMR to the practice, and then the design process of standard support pattern and the tunnel support material was proposed.
Keywords
Uncertainty; Monte carlo simulation; Statistic reasoning; RMR classification table;
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