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Keywords: volcanic depositClose
Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-124
... SUMMARY: It is to-day more and more a necessity to transverse volcanic deposits with pressure tunnels of various size. Such constructions are requiring certain principle considerations for the design as well as for the performance of the excavation and the tunnel lining which are not new in...
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