Blar i Institutt for geovitenskap og petroleum på emneord "Rock mechanics"
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Design of unlined pressure tunnels in Norway – limitations of empirical overburden criteria and significance of in-situ rock stress measurements
(Chapter, 2020)A key requirement for unlined pressure tunnels is confinement, i.e. that the minimum principal stress must exceed the internal water pressure. Failure to meet this requirement can cause hydraulic jacking of the rock mass, ... -
Rock Stress Measurements for Unlined Pressure Tunnels: A True Triaxial Laboratory Experiment to Investigate the Ability of a Simplified Hydraulic Jacking Test to Assess Fracture Normal Stress
(Peer reviewed; Journal article, 2021)To avoid hydraulic failure of unlined pressure tunnels, knowledge of minimum principal stress is needed. Such knowledge is only obtainable from in situ measurements, which are often time-consuming and relatively costly, ...