Rogfast Tunnel Project, Norway
SmartMeasures AmbergSeismics Tough projects call for smart measures. Norwegian Public Roads Administration Coastal highway route E39 Rogfast tunnel project, Norway Project The world’s deepest and longest road tunnel Coastal highway route E39 - Rogfast tunnel project in construction – subsea comes to that! Access and maintenance tunnel E- 13 Arsvågen side tunnel. As part of the planned new coastal highway route E39 between Stavan- 26.7 km total project length ger and Trondheim, the Rogfast subsea tunnel underpasses on its length The longest NATM undersea highway of 26.7 km the Boknafjord from Harestad in Randberg to Laupland on tunnel in the world Veste Bokn, passing the island Kvitsoy. The road tunnel with two tubes will be the deepest and longest undersea tunnel in the world. Contractor Preliminary geological and geophysical investigations have shown that the Rogfast Contractor: NCC AS tunnel runs through an area of complicated geology with several thrust nappes TSP Survey: Statens Vegvesen (project and faults as well as many different types of rock. Along the section E04 between owner) Kvitsøy and Bokn, distribution of the rock types is very uncertain. Duration TSP measurements have been done since the beginning of 2018 - 2019; resumption expected in the excavation of the side tun- 2020 nels E13-Arsvågen (L=1,980 m), predicting the geological condi- Task tions to obtain maximum struc- Detection of formation structures, shear tural information in addition to zones, weak rock zones, water bearing the “Measuring While Drilling” areas. (MWD) method. Reduction of the geological uncertainty to a minimum due to complex situa- During the excavation, mainly tions at some tunnel sections gneiss alternating with phyllite was present and a shear zone near the intersection of E13 with the main tunnel section E04 was expected.
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