RADIONUCLIDE MIGRATION IN FRACTURED ROCK - HYDROLOGICAL INVESTIGATIONS AT AN EXPERIMENTAL SITE IN THE CARNMENNELLIS GRANITE, CORNWALL
The objectives, methods and results of hydrological investigation of the granite at an experimental site in Cornwall are described and discussed. Constant head injection tests and radioactive tracer experiments have revealed a fracture permeability in which water movement is confined to discrete fractures seperated by rock of very low permeability. Data on flow path frequency, orientation and effective hydraulic aperture, required for network modelling, are presented for a 700 m borehole, with additional hydraulic data from three other boreholes. migration have been identified. A mean hydraulic conductivity for the granite investigated of 1.57 x 10**- 7 ms**-1 has been obtained, 2.11 x 10**-8ms**-1 if the major hydraulic features are excluded.
Bibliographic Reference: EUR 9668 EN (1985) FS, 73 P., BFR 300, EUROFFICE, LUXEMBOURG, POB 1003
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Record Number: 1989123045800 / Last updated on: 1987-01-01
Available languages: en