Description

Freezing of the porewater in the tunnel backfill and consequences for backfill properties.

SKB Number

SKB FEP Number

BfT02

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. Neglected, since this requires permafrost conditions. Intact canister - Long-term after saturation and "thermal" period. Neglected if backfill temperature > -2°C. Otherwise discussed.

References

Bibliographic references to obtain more information

SR-Site Buffer, backfill and closure process report, TR-10-47, Section(s) 2.3.4, 4.1.2; SR-Site Main report, TR-11-01, Section(s) 7.4.4