Journal
COMPUTERS AND GEOTECHNICS
Volume 38, Issue 6, Pages 783-790Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compgeo.2011.04.005
Keywords
Rock engineering classification; Neuro-fuzzy method; Clustering algorithm; RMR
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The rock engineering classification system is based on six parameters defined by Bieniawski [5], who employed parallel sets of linguistic and numerical criteria that were acknowledged to influence the behaviour of rock masses and the stability of rock structures. Consequently, experts frequently relate rock joints and discontinuities as well as ground water conditions in linguistic terms, with rough calculations. Recently, intelligence system approaches such as artificial neural network (ANN) and neuro-fuzzy methods have been used successfully for time series modelling. Using neuro-fuzzy approaches, which enable the information that is stored in trained networks to be expressed in the form of a fuzzy rule base, would help to overcome this issue. This paper presents the results of a study of the application of neuro-fuzzy methods to predict rock mass rating. We note that the proposed weights technique was applied in this process. We show that neuro-fuzzy methods give better predictions than conventional modelling approaches. (C) 2011 Elsevier Ltd. All rights reserved.
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