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Keywords: severe rock pressure
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Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-143
... volcanic activi- ties and severe tectonic movements have caused many foldings and faults in geolog- ical formation in Japan. All of these geological situations have made rock formations fractured and altered, which cause many difficulties related to severe rock pressure in mining, in turn. In coal mine...

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