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Keywords: poor quality rock mass
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Proceedings Papers
Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-100
.... A special characteristic of the rock masses, affected by the shaft pillar extraction, was that the shaft was located in poor quality rock masses. After the extraction of a portion of the shaft pillar, excessive deformations occurred at the shaft/reef intersection. Therefore, a decision was taken to extract...
