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Keywords: steel lining
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Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-087
... results, the thickness was found to be 0.3 m at most, which was relatively small in comparison with that caused by the conventional blasting method. Consequently, for the sake of the reduction of the loosening zone by the Use of TBM, a design of the steel lining in the penstock has become economical. The...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-072
... SUMMARY The article describes geologic conditions, investigations performed and design criteria for unlined high pressure tunnels and air cushion chambers. The economic advantages of unlined pressure tunnels for the upper portion of the head instead of steel lined shafts all the way to the top...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-070
... coaction of steel sheet lining, concrete and rock mass, for cases of steel lining application: methodology of the rock mass investigations, general theoretical aspects of the rock mass - lining coaction, statical analyses of the "steel sheet - concrete - rock mass" system, trial testing of adopted...

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