The aim of the RESEAL project is to contribute to the demonstration of repository sealing in argillaceous host rock by performing a series of in situ (HADES) experiments and laboratory tests on the selected sealing materials. The main objective of the project is to demonstrate that a bentonite seal avoids preferential migration of water, gas and radionuclides along the seal/host rock interface and through the excavation disturbed zone. An important aspect of the project are the modelling efforts to assist in the adequate interpretation of the tests and in identifying the main mechanistic uncertainties. In this way a satisfactory understanding of seal behaviour can be achieved. The modelling work has been undertaken by three different research groups: CEA, SCK-CEN and UPC. This document contains an integrated account of the contributions of the modelling teams, including a brief description of the theoretical formulations used in the coupled hydromechanical analyses, coupled hydromechanical modelling of the laboratory infiltration tests and in situ shaft sealing test, and finally, the advective-diffusive transport modelling of the tracer migration experiment performed in the borehole sealing test.
|Number of pages
|Published - May 2009
|Studiecentrum voor Kernenergie