Matti Hakala, Publications

Mattila, J., Suikkanen, J., Read, R., Valli, J., Hakala, M., Sjöberg, J., Figueiredo, B.,
Kiuru, R., Haapalehto, S. Posiva Report 2021-18. Rock Mechanics of Olkiluoto.
Posiva Oy, Olkiluoto.

Valli, J., Kuula, H. & Hakala, M. Working Report 2011-34. Modelling of the in
situ Stress State at Olkiluoto. Posiva Oy, Olkiluoto.

Mönkkönen, H., Hakala, M., Paananen, M. & Laine, E. Working Report 2012-
7. ONKALO Rock Mechanics Model (RMM) – Version 2.0. Posiva Oy,
Olkiluoto.

Kemppainen K., Hakala M., Johansson E., Kuula H., Hudson J.A., 2011. In
situ rock stress-strength comparison: Posiva’s Olkiluoto Spalling Experiment
(POSE). 12th ISRM International Congress on Rock Mechanics. Beijing,
China.

Uotinen L., Nuijten G., Siren T., Ström J., Hakala M., Rinne M., 2011
Eurocodes in Hard Rock Engineering in Finland. World Tunnel Congress
2011, Helsinki, Finalnd.

Lahti, M. (ed.) & Hakala, M. 2010. Working Report 2010-47. Results of
Monitoring at Olkiluoto in 2009, Rock Mechanics.. Posiva Oy, Olkiluoto.

Remes, H., Kuula, H., Somervuori, P. & Hakala, M. 2009. ONKALO Rock
Mechanics Model (RMM) Version 1.0. Posiva Working Report 2009-55.
Posiva Oy, Olkiluoto.

Kemppainen K., Hakala M., Johansson E., 2009. Rock mechanics activities
in the rock characterization facility ONKALO. Get Undergroung, Underground
Space Seminar, Rock Engineering Seminar, November 4-5th, 2009. Finnish
Tunneling Association FTA and The Finnish National Group of ISRM.

Hakala, M., Hudson, J. A., Harrison, J. P. & Johansson, E. 2008. Working
Report 2008-83, Assessment of the Potential for Rock Spalling at the
Olkiluoto Site. Posiva Oy, Olkiluoto.

Mattila, J. & Hakala, M. 2008. Working Report 2008-22, Results of Monitoring
at Olkiluoto in 2007 – Rock Mechanics. Posiva Oy, Olkiluoto.

Hakala et al. 2007. ISRMMS Vol 44, No 1 (Editor Zimmerman R. W.),
Estimating the transversely isotropic elastic intact rock properties for in situ
stress measuremnt data reduction: A case study of the Olkiluoto mica gneiss,
Finland.

Johansson et. al. 2007. Rock mechanics research for radioactive waste
disposal in Finland. 11th ISRM Congress, Lisbon, 9-13/7/2007.

Hakala & Sjöberg 2006. Posiva’s Working Report 2006-99, A Methodology for
Interpretation of Overcoring Stress Measurements in Anisotropic Rock. Posiva
Oy, Olkiluoto.

Hakala M. Posiva 2006-03, Quality Control for Overcoring Stress
Measurement Data. Posiva Oy, Olkiluoto.

Hakala et al. 2006. Proceedings of the international symposium on in-situ rock
stress, Trondheim, Norway, June 19-21,2006 ( Editors Lu m., Li C., Kjorholt
H., Dahle H.), Quality control and interpretation of in situ stress measurement
data

Hakala M., 2005 Strength and Strain Anisotropy of Olkiluoto Mica gneiss.
Posiva Working Report 2005-61. Posiva Oy, Olkiluoto.

Hakala M., 2004. Manual for Transient Strain Analysis for Overcoring, OCS
Version 2.2. Posiva R&D Report 2004-08. Posiva Oy, Olkiluoto.

Hakala M., Hudson J.A., Christianson R., 2003. Quality control of overcoring
stress measurement data. Int J Rock Mech Min Sci 40 ( 2003 ) 1141-1159.
Balkema.

Hakala M., 2003. Practical tool for quality control of overcoring stress
measurement data. ISRM 2003 – Technology roadmap for rock mechanics,
South African Institute of Mining and Metallurgy, 2003.

Hakala M., Tolppanen P., 2003. Analyses of Tunnel Stress Failures at
Pyhäsalmi Mine. ISRM 2003 – Technology roadmap for rock mechanics,
South African Institute of Mining and Metallurgy, 2003.

Hakala M., Kuula H., Matinlassi M., Somervuori P., Syrjänen P., Tolppanen
P., 2002. Analyses of Tunnel Stress Failures at Pyhäsalmi Mine. Posiva
2002-28. Posiva Oy, Helsinki.

Satola I. S., Hakala M., 2001. Corrosion protected cable bolts in long-term
reinforcement. Research report TKK-KAL-A-28. Espoo, Helsinki University of
Technology.

Roinisto J., Salmelainen J., Aartolahti J-V, Griffin A., Hakala M., 2001.
Meilahti underground car park and civil defence shelter. Proceedings of the
ISRM regional symposium Eurock 2001, Espoo, Finland. Särkkä P., Eloranta
P. ( eds ). Balkema.

Salmelainen J., Roinisto J., Orivuori E., Aartolahti, Hakala M., 2001. Kluuvi
underground car park and civil defence shelter. Proceedings of the ISRM
regional symposium Eurock 2001, Espoo, Finland. Särkkä P., Eloranta P. (
eds ). Balkema.

Brusila J., Hakala M., 2001. Yielding pillar design at Pyhäsalmi new mine.
Proceedings of the ISRM regional symposium Eurock 2001, Espoo, Finland.
Särkkä P., Eloranta P. ( eds ). Balkema.

Satola I. S., Hakala M., 2001. Corrosion protected cable bolts in long-term
reinforcement. Proceedings of the ISRM regional symposium Eurock 2001,
Espoo, Finland. Särkkä P., Eloranta P. ( eds ). Balkema.

Brusila J., Hakala M., Särkkä P., 2001. Yielding pillar design vid Pyhäsalmi
nya gruva. Bergmekanik dagen 2001. Svebefo, Stockholm.

Autio J., Johansson E., Kirkkomäki T., Hakala, M., Heikkilä E., 2000. In situ
failure test in the Research tunnel at Olkiluoto. Posiva 2000-05. Helsinki,
Posiva Oy.

Hakala, M. 2000. Interpretation of the Hästholmen in situ state of stress based
on core damage observations, Posiva 2000-01. Helsinki, Posiva Oy.

Hakala, M. 1999. Numerical study of the core damage and interpretation of
the in situ state of stress, Posiva 99-25. Helsinki: Posiva Oy.

Hakala M. et al, 1999.Rock mechanical design of the Kluuvi underground car
park/civil defence shelter. Proceedings of 9th ISRM Symposium, Paris,
France. Vouille G., Berest P. ( eds ). Balkema.

Hakala M., 1999. Numerical study of the core disk fracturing and
interpretation of the in situ state of stress. Proceedings of 9th ISRM
Symposium, Paris, France. Vouille G., Berest P. ( eds ). Balkema.

Hakala M. and Heikkilä E., 1997. Summary Report – Development of
Laboratory Tests and Stress-Strain Behaviour of Olkiluoto Mica Gneiss.
Posiva Report 97 04. Posiva Oy, Helsinki.

Hakala M., Karjunen T., Dynamic Analysis of Steel-Concrete Structure of
TVO nuclear Power Plant Containment Building. STUK-YTO-TR 108. Helsinki
1996.

Tolppanen P., Johansson E., Hakala M., Rock Mechanical Analyses of In
Situ Stress / Strength Ratio at the TVO Investigation Sites Kivetty, Olkiluoto
and Romuvaara. Report YJT-95-11.

Hakala M., Johansson E., Simonen A., Lorig L., Application of the
Continuously-Yielding Joint Model for Studying Disposal of High-Level
Nuclear Waste in Crystalline Rock. Report YJT-93-06 .Helsinki 1993. Nuclear
Waste Commission of Finnish Power Companies.

Johansson E., Hakala M., Mechanical, thermomechanical and hydraulic
analyses of rock mass around a repository for spent fuel disposal. Report YJT-92-17. Helsinki 1992. Nuclear Waste Commission of Finnish Power
Companies.

Johansson E., Hakala M., Lorig L., Rock mechanical, thermomechanical and
hydraulic behaviour of the near field for spent nuclear fuel. Report YJT-91-21.
Helsinki 1991. Nuclear Waste Commission of Finnish Power Companies.

Johansson E., Hakala M., Peltonen E., Salo J.-P., Lorig L., Comparisons of
computed two- and three-dimensional thermomechanical response of jointed
rock. Proc. of 7th International Congress on Rock Mechanics. Rotterdam
1991, Balkema.