Abstract
The near field and far field behaviour of a crystalline rock mass around the nuclear waste repository is studied. This overview report is based on numerical modelling reports found in literature and on numerical modelling done in Finland. Teollisuuden Voima Oy`s (TVO) preliminary design for the repository was taken into consideration when assessing the results. The results show that the overall stability of the repository is good. Minor instability might occur in the vicinity of the emplacement tunnel and the emplacement hole when using conservative input parameters. However, the results are considered to be preliminary at this stage, all the parameters like those for weakness zones are not known well enough. From the safety analysis`s point of view the rock mechanical effects are very insignificant. The changes in the hydraulic permeability of rock mass are small except some single rock joints where the permeability changes in the vicinity of rooms might be multiple compared to the in-situ state. The rock mechanical stability might easily be increased by proper support design or by avoiding the critical fracture zones. The development of numerical codes for modelling the rock mass behaviour related to nuclear waste management has lately considerably proceeded, still, there are
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Citation Formats
Johansson, E, and Hakala, M.
Mechanical, thermomechanical and hydraulic analyses of rock mass around a repository for spent fuel disposal; Loppusijoitustiloja ympaeroeivaen kiteisen kallion mekaaninen, terminen ja hydraulinen kaeyttaeytyminen.
Finland: N. p.,
1992.
Web.
Johansson, E, & Hakala, M.
Mechanical, thermomechanical and hydraulic analyses of rock mass around a repository for spent fuel disposal; Loppusijoitustiloja ympaeroeivaen kiteisen kallion mekaaninen, terminen ja hydraulinen kaeyttaeytyminen.
Finland.
Johansson, E, and Hakala, M.
1992.
"Mechanical, thermomechanical and hydraulic analyses of rock mass around a repository for spent fuel disposal; Loppusijoitustiloja ympaeroeivaen kiteisen kallion mekaaninen, terminen ja hydraulinen kaeyttaeytyminen."
Finland.
@misc{etde_10135430,
title = {Mechanical, thermomechanical and hydraulic analyses of rock mass around a repository for spent fuel disposal; Loppusijoitustiloja ympaeroeivaen kiteisen kallion mekaaninen, terminen ja hydraulinen kaeyttaeytyminen}
author = {Johansson, E, and Hakala, M}
abstractNote = {The near field and far field behaviour of a crystalline rock mass around the nuclear waste repository is studied. This overview report is based on numerical modelling reports found in literature and on numerical modelling done in Finland. Teollisuuden Voima Oy`s (TVO) preliminary design for the repository was taken into consideration when assessing the results. The results show that the overall stability of the repository is good. Minor instability might occur in the vicinity of the emplacement tunnel and the emplacement hole when using conservative input parameters. However, the results are considered to be preliminary at this stage, all the parameters like those for weakness zones are not known well enough. From the safety analysis`s point of view the rock mechanical effects are very insignificant. The changes in the hydraulic permeability of rock mass are small except some single rock joints where the permeability changes in the vicinity of rooms might be multiple compared to the in-situ state. The rock mechanical stability might easily be increased by proper support design or by avoiding the critical fracture zones. The development of numerical codes for modelling the rock mass behaviour related to nuclear waste management has lately considerably proceeded, still, there are needs to further develop the codes to build up more detailed description of the near field and the far field behaviour of the repository. (orig.).}
place = {Finland}
year = {1992}
month = {Oct}
}
title = {Mechanical, thermomechanical and hydraulic analyses of rock mass around a repository for spent fuel disposal; Loppusijoitustiloja ympaeroeivaen kiteisen kallion mekaaninen, terminen ja hydraulinen kaeyttaeytyminen}
author = {Johansson, E, and Hakala, M}
abstractNote = {The near field and far field behaviour of a crystalline rock mass around the nuclear waste repository is studied. This overview report is based on numerical modelling reports found in literature and on numerical modelling done in Finland. Teollisuuden Voima Oy`s (TVO) preliminary design for the repository was taken into consideration when assessing the results. The results show that the overall stability of the repository is good. Minor instability might occur in the vicinity of the emplacement tunnel and the emplacement hole when using conservative input parameters. However, the results are considered to be preliminary at this stage, all the parameters like those for weakness zones are not known well enough. From the safety analysis`s point of view the rock mechanical effects are very insignificant. The changes in the hydraulic permeability of rock mass are small except some single rock joints where the permeability changes in the vicinity of rooms might be multiple compared to the in-situ state. The rock mechanical stability might easily be increased by proper support design or by avoiding the critical fracture zones. The development of numerical codes for modelling the rock mass behaviour related to nuclear waste management has lately considerably proceeded, still, there are needs to further develop the codes to build up more detailed description of the near field and the far field behaviour of the repository. (orig.).}
place = {Finland}
year = {1992}
month = {Oct}
}