Abstract
It is emphasized that the rock engineer must establish the engineering objective, consider the relevant rock mechanics mechanisms, obtain the necessary site investigation information, conduct appropriate modeling in order to develop a predictive capability, and then decide on the design. Furthermore, in mining, there is much greater scope for design variations, especially in large quarries and open-pit mining of large ore bodies, because the whole mine geometry can be arranged to optimize the extraction conditions. Also, mining slopes only have to be stable in so far as any instabilities do not inhibit the mining operations, which mean that some forms of minor instabilities are acceptable. Although mining operations provide good opportunities for obtaining information about the rock mechanics properties, they are often located in faulted or contorted geology—almost by definition in the case of orebodies because the desired metal has been concentrated by geological processes.
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