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Geotechnical aspects of investigations at Stripa on radioactive waste isolation

Conference ·
OSTI ID:6039496
Access to a granitic rock mass in an iron ore mine in Sweden has provided a unique opportunity for a series of investigations on problems involved in geologic storage of radioactive waste. Important results have been obtained that would not have emerged if these experiments had not been carried out underground at depths comparable with those envisaged for an actual repository. It was observed that as the rock mass was heated, the temperature variations over time and space could be reasonably well predicted using available theory and appropriate values of material properties. However, because the rock is fractured, predicting the thermochenical behavior is much more involved. The role of the discontinuities is a key factor and is not yet well understood. The fracture network is also the dominant factor in controlling rock mass permeability. A new method of measuring average permeability on a very large scale is reported.
Research Organization:
Lawrence Berkeley Lab., CA (USA)
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
6039496
Report Number(s):
LBL-13334; CONF-810983-1; ON: DE82000775
Country of Publication:
United States
Language:
English