Description
For an overburden larger than 200 m, discontinuities in the Opalinus Clay are hydraulically not distinguishable from the undisturbed rock matrix. This is explained by the fact that self-sealing processes (swelling of clay minerals, creep) are very effective within the Opalinus Clay. Based on the present knowledge, it can be expected that naturally and artificially created fractures within the host rock will be effectively self-sealed.
OPA Category
Category as used in the OPA assessment
Geological processes and events
OPA Number
Number as used in the OPA assessment
2.07
NEA V1 IFEP Reference(s)
Related IFEPs from the NEA V1 IFEP list from 1999
2.2.02, 2.2.06