Are there papers or data available with comparison between tunnel predicted (design phase) RMR and actual (excavated) RMR?

08 August 2017 0 7K Report

I'm looking for data that compares the RMR (or other rock mass classifications) from design phase to that of actual, excavated tunnel. Comparisons between predicted and actual Excavation and Support Classes are also of interest.

I've already found articles like the one linked below.

http://www.sciencedirect.com/science/article/pii/S0886779806000794

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