El Hierro island, 0,2 million years old, is the youngest of the Canary Islands. Since it was recognized UNESCO Biosphere Reserve in 2000, the road infrastructure to be planned has to cause a minimum impact on the landscape of the island. This applies to El Verodal Tunnel to be built in the NW side of the island. Due not only to orography but also to administrative constraints, site studies are scarce. Moreover, the implementation of the existing rock mass classifications for volcanic rocks makes the design of the tunnel harder due to the great variability shown by these materials.
Geotechnical Characterization of El Verodal Tunnel in El Hierro, Spain
López-Felipe, M.C. , and J.T. Fernández-Soldevilla. "Geotechnical Characterization of El Verodal Tunnel in El Hierro, Spain." Paper presented at the ISRM International Workshop on Rock Mechanics and Geoengineering in Volcanic Environments, Puerto de la Cruz, Spain, May 2010.
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