The monitoring and interpretation of production drill performance data enables a determination of rock mass strength and structure. Correlation of drill performance parameters with changes in intact rock strength, lithology and frequency of fractures has been shown to provide a means of accurately profiling variation in these rock properties with depth. Case studies undertaken in surface operations, using both analog and digital drill monitoring instrumentation, illustrate the potential of this technique for rock mass characterization in surface mine environments.
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Scoble et al. (1987) studied this question.
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