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Keywords: loosening zone
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Proceedings Papers

Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-167
... ABSTRACT When tunnel is excavated in rock, rock around an opening trends to loosen. The rock behavior reaches to full stability by controlling a loosening zone and mobilizing ground arch effect. It is defined with the extent of inelastic zone(s) which consists of strain-softening and plastic...
Proceedings Papers

Paper presented at the 7th ISRM Congress, September 16–20, 1991
Paper Number: ISRM-7CONGRESS-1991-203
... river which proud of its foremost water volume in the country. renewable energy tbm pilot machine schist Schilt correlation deformation modulus green schist tunnel rock classification loosening zone plane excavation gripper Reservoir Characterization black schist schistsity plane...

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