Cavern sealing solutions
Main objective
Development, evaluation, and certification of innovative materials and related construction solutions for the underground gas-storage facility.
Challenges
- High pressure
- Structural challenges related to the internal pressure
- Minimum 25 years lifetime with minimum 1 avern design
Segmented lining solution
Structural stability of the cavern
- Rock Support stabilization of the cavern:
- Rock bolts
- Steel ark and beam
- Pre grouting/mesh
- Backfilling: shotcrete
Structural stability for the membrane
- Grouting: sand or pressurized filling
- Concrete pre-casted segments: reinforced with pre-stressed steel and/or short fibres
- Joint filler: rubber seal (embedded in the segments) in combination with rubber cover
Sealing component
- Sealing membrane: spray able membrane