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Keywords: failure zone
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Proceedings Papers

Paper presented at the ISRM 3rd Nordic Rock Mechanics Symposium - NRMS 2017, October 11–12, 2017
Paper Number: ISRM-NRMS-2017-001
... is formed in the rock mass in a certain distance behind the tunnel wall. The methodology of ground support in an underground opening is dependent on the size of the failure zone and the boundary depth of the natural pressure arch. In the case of a small failure zone, rockbolts should be long enough to reach...

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