List of products by author: B. Gammelsæter

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  Geological monitoring of Follo Line TBM project in Norway

  Abstract: The Follo Line project is the first TBM excavation using double shield machines in Norway. The compensation format is based upon the NTNU-model and variations in geology are related to the fracturing factor, K, CLI, and quartz content. Double shield TBMs give very limited access to the rock mass, but with compensation directly linked to rock mass fracturing, mapping in the tunnel is important....

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  Water ingress and groundwater control in double shield TBMs at the Follo Line Pro ject - Norway

  Abstract: Tunnel projects in Norway run the risk of high water ingress during construction phase, resulting in pore pressure reduction in both rock and soil above the tunnel. This is due to risk of settlement in sensitive clay sediments and draining wetlands. Thus it is crucial to identify areas sensitive to pore pressure reduction above the tunnel alignment during the design phase. As a result of the...

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