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Workreport 1998-12

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Name:

Kivetyn, Olkiluodon ja Romuvaaran kalliomallit rakennemallien muutokset vuonna 1997

Writer:

Pauli Saksa; Henry Ahokas; Jorma Nummela; Juha Lindh

Language:

Finnish

Page count:

52

Summary:

Working report: Saksa, P., Ahokas, H., Nummela, J. & Lindh, J. 1998. Bedrock models of Kivetty,
Olkiluoto and Romuvaara sites, revisions of the structural models during 1997. Work
Report 98-12. Posiva Oy, Helsinki. 50 p. (in Finnish).


ABSTRACT

Posiva Oy studies the Finnish bedrock for the final disposal of the spent nuclear fuel.
Preliminary site investigations were carried out at five sites, Kuhmo, Hyrynsalmi,
Konginkangas, Sievi and Eurajoki during 1987-1992. Detailed site investigations
have continued at Romuvaara in Kuhmo, at Kivetty in Äänekoski and at Olkiluoto in
Eurajoki since 1993. In the beginning of 1997 the investigations started also at
Loviisa Hästholmen. The investigations at these four sites will continue until 2000
when the site for final disposal of the spent nuclear fuel will be selected.

The observations, interpretations and estimates resulting from site investigations are
developed into conceptual bedrock model. In this report the structural models are
updated according year 1997 results. The bedrock model is compiled to PosivaÕs
computer aided geological ROCK-CAD modelling system. New results are based on
data from boreholes KR10 - KR13, KR9 - KR10 and KR10 - KR11 at Kivetty,
Olkiluoto and Romuvaara sites, respectively.

Fracture structures R13 and R29 have been changed at Kivetty model. No new
structures have been inferred. Structures R17, R20, R24 and R26 have been modified
at Olkiluoto. New structure R30 has been described. Separate alternative
conceptualisation has been formed to unit comprised of zones R17 and R20 as a
whole. Romuvaara structural model covers now also new structures R29, R30 and
R31. Classification of transmissivity for the fracture zone structures has been revised
for all three sites.


Keywords: Kivetty, Olkiluoto, Romuvaara, bedrock model, structure, hydraulic
transmissivity


Saksa, P., Ahokas, H., Nummela, J. & Lindh, J. 1998. Bedrock models of Kivetty,
Olkiluoto and Romuvaara sites, revisions of the structural models during 1997. Work
Report 98-12. Posiva Oy, Helsinki. 50 p. (in Finnish).


ABSTRACT

Posiva Oy studies the Finnish bedrock for the final disposal of the spent nuclear fuel.
Preliminary site investigations were carried out at five sites, Kuhmo, Hyrynsalmi,
Konginkangas, Sievi and Eurajoki during 1987-1992. Detailed site investigations
have continued at Romuvaara in Kuhmo, at Kivetty in Äänekoski and at Olkiluoto in
Eurajoki since 1993. In the beginning of 1997 the investigations started also at
Loviisa Hästholmen. The investigations at these four sites will continue until 2000
when the site for final disposal of the spent nuclear fuel will be selected.

The observations, interpretations and estimates resulting from site investigations are
developed into conceptual bedrock model. In this report the structural models are
updated according year 1997 results. The bedrock model is compiled to PosivaÕs
computer aided geological ROCK-CAD modelling system. New results are based on
data from boreholes KR10 - KR13, KR9 - KR10 and KR10 - KR11 at Kivetty,
Olkiluoto and Romuvaara sites, respectively.

Fracture structures R13 and R29 have been changed at Kivetty model. No new
structures have been inferred. Structures R17, R20, R24 and R26 have been modified
at Olkiluoto. New structure R30 has been described. Separate alternative
conceptualisation has been formed to unit comprised of zones R17 and R20 as a
whole. Romuvaara structural model covers now also new structures R29, R30 and
R31. Classification of transmissivity for the fracture zone structures has been revised
for all three sites.


Keywords: Kivetty, Olkiluoto, Romuvaara, bedrock model, structure, hydraulic
transmissivity


Keywords:

Kivetty; Olkiluoto; Romuvaara; kalliomalli; rakenne; vedenjohtokyky

File(s):

Kivetyn, Olkiluodon ja Romuvaaran kalliomallit rakennemallien muutokset vuonna 1997 (pdf) (5.7 MB)


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