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Keywords: tunnel rockmass
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-536
... of systems directly. That is the character of Grey system[1]. The change of displacement convergence in tunnel rockmass is a Grey system in fact. This system composed of known factors (such as the geometrical figure, dimension, mechanical performance) and many unknown factors (such as mechanical state...

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