Description
Water transport in the tunnel backfill under unsaturated conditions because of a negative capillary pressure in the pores of the backfill that leads to water uptake from the surrounding rock.
SKB Number
SKB FEP Number
BfT03
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. Buffer and backfill THM model.
Intact canister - Long-term after saturation and "thermal" period. Not relevant by definition.
References
Bibliographic references to obtain more information
SR-Site Buffer, backfill and closure process report, TR-10-47, Section(s) 2.3.4, 4.2.1; SR-Site Main report, TR-11-01, Section(s) 7.4.4