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  • 1.
    Bjarnason, Bjarni
    Luleå University of Technology.
    Hydrofracturing rock stress measurements in the Baltic shield1986Licentiate thesis, monograph (Other academic)
  • 2. Bjarnason, Bjarni
    et al.
    Leijon, Bengt
    Luleå University of Technology.
    Stephansson, Ove
    Luleå University of Technology.
    The Bolmen project1986Report (Other academic)
  • 3.
    Bjarnason, Bjarni
    et al.
    Luleå University of Technology.
    Stephansson, Ove
    Luleå University of Technology.
    Torikka, Arne
    Luleå University of Technology.
    Bergström, K.
    Luleå University of Technology.
    Four years of hydrofracturing rock stress measurements in Sweden1986In: Rock stress and rock stress measurements: proceedings of the International Symposium on Rock Stress and Rock Stress Measurements, Stockholm 1-3 September 1986 / [ed] Ove Stephansson, Luleå: CENTEK , 1986, p. 421-247Conference paper (Refereed)
  • 4.
    Mathis, James I.
    et al.
    Luleå University of Technology.
    Stephansson, Ove
    Luleå University of Technology.
    Bjarnason, Bjarni
    Luleå University of Technology.
    Hakami, Houssein
    Luleå University of Technology.
    Herdocia, Alvaro
    Luleå University of Technology.
    Mattila, Ulf
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering.
    Singh, Upendra
    Luleå University of Technology.
    Heat induced fracturing of rock in an existing uniaxial stress field1986In: Scientific basis for nuclear waste management IX: symposium held September 9 - 11, 1985, Stockholm, Sweden / [ed] Lars O. Werme, Pittsburgh, Pa: Materials Research Society, 1986, p. 799-807Conference paper (Refereed)
    Abstract [en]

    The Stripa project was designed to test the agreement between theoretical and actual rock fracture times of a rock block loaded with a physical as well as a thermal load. Laboratory testing consisted of physically loading center-drilled cubes of rock, 0. 3 m on a side, uniaxially from 0 to 25 MPa. These were then thermally loaded with a nominal 3. 7 kW (factory rating) cylindrical heater until failure occurred. This time to failure was recorded for comparison with a direct mathematical and a finite element solution. For both cases, calculations were performed at specific time-steps and an estimated failure time calculated from the compiled results.

  • 5.
    Mathis, James
    et al.
    Luleå University of Technology.
    Stephansson, Ove
    Luleå University of Technology.
    Bjarnason, Bjarni
    Luleå University of Technology.
    Hakami, Houssein
    Luleå University of Technology.
    Hedrocia, Alvaro
    Luleå University of Technology.
    Mattila, Ulf
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering.
    Singh, Upendra
    Luleå University of Technology.
    Eriksson, Leif
    Geological Survey of Sweden.
    Heat induced fracturing of rock in an existing uniaxial stress field1986Report (Other academic)
  • 6.
    Stephansson, Ove
    et al.
    Luleå University of Technology.
    Bjarnason, Bjarni
    Luleå University of Technology.
    Hydraulisk spräckning for bergspänningsmätning i kristallin berggrund1986In: Abstracts: 17e Nordiska geologmötet, Helsingfors universitet, 12-15.5. 1986, 1986Conference paper (Other academic)
  • 7.
    Stephansson, Ove
    et al.
    Luleå University of Technology.
    Savilahti, Tomas
    Luleå University of Technology.
    Bjarnason, Bjarni
    Luleå University of Technology.
    Rock mechanics of the deep borehole at Gravberg, Sweden1989In: Rock at great depth: rock mechanics and rock physics at great depth / [ed] D. Fourmaintraux; V. Maury, Rotterdam: Balkema Publishers, A.A. / Taylor & Francis The Netherlands , 1989, Vol. 2, p. 863-870Conference paper (Refereed)
1 - 7 of 7
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