Figure 1.
The diagram shows a conceptual design of a deep geological repository where waste is placed within engineered barriers inside host rock beneath overlying rocks, illustrating isolation and retardation functions, alongside a three dimensional layout of disposal galleries with spacing between waste packages and depth ranging from about 150 to 450 metres, and a detailed vertical cross section showing components such as envelope, backfill, gallery lining, floor, and host rock clay, while a supercontainer design highlights buffer, filler, overpack, canister, and concrete lid surrounding the waste.Left: Illustrative diagram of geological disposal and multi-barrier system (adapted from ONDRAF/NIRAS). Right: Artistic view of the Belgian current reference geological disposal system