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Nowadays, rock engineering classification systems, which constitute the backbone of the empirical design approach, are widely employed in both civil engineering and mining engineering. Rock mass classifications have recently been quite popular and are being used mostly for the preliminary design and planning purposes of projects. According to Bieniawski (1989), a rock mass classification scheme is intended to classify the rock masses, provide a basis for estimating deformation and strength properties, supply quantitative data for support estimation, and present a platform for communication between the exploration, design, and construction groups.The requirements for building the type of system that can adequately solve rock engineering problems include the following: ® A supervised classification system must be adapted to fit the specific project at hand ® The reliability of the classes to handle the given rock engineering problem must be estimated

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