Sealing of the tunnels will be done using concrete rings.
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Asa tunnel boring machine (TBM) drilling at Hallandsås. -
Opening of one of the two Hallandsås tunnels. -
Sealing of the tunnels will be done using concrete rings. -
TBM Asa is capable of drilling through fractured rocks. -
The two Hallandsås tunnels are parallel to each other.
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