Description
Piping and erosion of the backfill in tunnels due to local buildup of water pressure in intersecting fractures.
SKB Number
SKB FEP Number
BfT06
Main Category
Main category for FEP
Internal process
System Component
System component to which the FEP applies
Backfill in tunnels
Handling
Explanation of how the FEP is treated
Intact canister - Resaturation/ "thermal" period. Quantitative estimate with an empirical model.
Intact canister - Long-term after saturation and "thermal" period. Not relevant. See also BfT16.
References
Bibliographic references to obtain more information
SR-Site Buffer, backfill and closure process report, TR-10-47, Section(s) 2.3.4, 4.2.4; SR-Site Main report, TR-11-01, Section(s) 7.4.4