Tunel Joberg – ražba tunelu v ledovcové moréně

Abstract

The thesis deals with the tunnel excavation Joberg partly ongoing in the glacial moraine. NATM method was used at this tunnel for the first time in Norway. The aim of the thesis is to assess the progress of the tunnel excavation in the selected cross section with variable overburden height. Further evaluation includes construction impact on global stability of the morainal slope. In the beginning of the thesis is secified moraine, its origins, types and material composition. Also it includes some made tunnel projects in the Nordic countries. It presents general information about the tunnel Joberg and directional and gradient tunnel conditions. Describes the geology of the area and also includes technical information about the tunnel excavation. The practical part includes alternative excavation design, evaluation of results, design optimalization and risk assessment.