High Speed 2s Chiltern tunnels run through permeable chalk requiring extensive ground treatment.
https://www.geplus.co.uk/features/grouting-building-connections-between-the-hs2-chiltern-tunnels-12-12-2023/
HS2 Chiltern tunnels run through permeable chalk requiring extensive ground treatment. GE reports on grouting of the tunnel cross passages.
https://www.geplus.co.uk/features/grouting-building-connections-between-the-hs2-chiltern-tunnels-12-12-2023/
Grouting: Building connections between the HS2 Chiltern tunnels | Ground Engineering
www.geplus.co.ukHS2 Chiltern tunnels run through permeable chalk requiring extensive ground treatment. GE reports on grouting of the tunnel cross passages.