Deep geological disposal in argillaceous formations: studies at the Tournemire test site

摘要

Deep argillaceous formations are potential host media for radioactive waste disposal. The French Institute of Protection and Nuclear Safety(IPSN)is developing in situ studies concerning The confining properties of this kind of geological barrier at the Tournemire tunnel site(Aveyron, France). The past research programme covered physical and physico-chemical properties of the Consoidated argillaceous medium, diffusive and covective transport; rock and water chemistry And long-term behaviour of the host rock. Investigations conclude that fluid circulations in the Unperturbed matrix are very slow.