Description

Effects of osmosis on tunnel backfill characteristics (swelling pressure and hydraulic conductivity) .

SKB Number

SKB FEP Number

BfT14

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. Hydraulic conductivity in THM model chosen so as to handle the effect of salinity. Intact canister - Long-term after saturation and "thermal" period. Evaluation through comparison with empirical data.

References

Bibliographic references to obtain more information

SR-Site Buffer, backfill and closure process report, TR-10-47, Section(s) 2.3.4, 4.4.6; SR-Site Main report, TR-11-01, Section(s) 7.4.4