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List of products by author: F. S. G. Syversen
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Structural borne noise and number of neighbours affected during TBM excavation of the Follo Line Project
Abstract: The main part of the tunnel in the Follo Line Project is constructed by means of tunnel boring machines (TBMs). Available noise modelling and measurements from various TBM tunnelling projects show a large scatter of results depending on geological conditions, TBM design and actual TBM boring diameter. Not much reference data from TBM excavation with similar boundary conditions is available, and...
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Tailor-made TBM design for boring in extreme hard rock conditions and examples from the Follo Line tunnel project
Abstract: There are quite a few examples of TBM projects that have suffered low progress and high cost due to improper design of TBM and cutters. Dealing with massive, homogeneous, abrasive and extreme hard rock with UCS in the range of 100-300 MPa, will demand a specific design of TBM and cutters. In Norway, such hard rock conditions are common and the experiences gained from TBM boring of tunnels since...
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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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