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Keywords: portal
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Proceedings Papers

Paper presented at the ISRM Rock Dynamics Summit, May 7–11, 2019
Paper Number: ISRM-RDS-2019-062
..., Afghanistan ABSTRACT: The existing Salang Tunnel is the first 2.6km long roadway tunnel in Afghanistan, which was constructed 55 years ago through conventional tunnel construction technique. It is located at an altitude of 3400 m so that the portals and mountains are subjected to severe environmental...

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