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List of products by author: E. Grøv
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FAST-Tunn, a research program to develop steel quality for hard rock TBM-cutters
Abstract: There is a need to compensate the development of the TBM-technology with new cutter steel to allow an excavation method that enables the machine capacities to be fully utilized at the rock-steel interface. Therefore, a major research project has been launched in Norway at the University in Trondheim (NTNU) together with the research foundation SINTEF. The project is named FAST-Tunn, Future...
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Pressure design in unlined tunnels and shafts
Abstract: Unlined tunnels and underground powerhouses have been constructed in Norway starting from the end of World War I in 1919. From the valuable experience gained through the design, construction and operation of tunnels in the past 100 years in Norway, unlined pressure tunnels have been developed reaching 1046 m hydrostatic head for Nye-Tyin hydropower project being a world record at present. In...
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Rock Mass influence on Hard Rock TBM Performance Prediction
Abstract: Prediction of construction time and cost is important to make a reliable choice of excavation method; to avoid schedule delays, budget overruns and to control the risk management for tunnelling projects. For hard rock Tunnel Boring Machine (TBM) projects, penetration rate is a key factor for estimating advance rates, cutter life and excavation costs. The penetration rate depends on intact rock...
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The NTNU Prediction Model: A Tool for Planning and Risk Management in Hard Rock TBM Tunnelling
Abstract: In the tunnelling industry, the prediction of TBM performance and costs is an important issue for planning and risk management at the design stages. The NTNU prediction model is an objective tool that has been used by several parties in the tunnelling industry. The model can be used for estimating the excavation rate and costs, as well as planning and risk assessment of hard rock TBMs projects....
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