Injection Works Old Kaiser-Wilhelm Tunnel
General data on the structural maintenance project - Injection works Alter Kaiser Wilhelm Tunnel
Client
Subterra a.s.
Contractor
BeMo Tunnelling GmbH, Niederlassung West
Project location
Old Kaiser Wilhelm Tunnel
56812 Cochem
Germany
Start of construction
2014
End of construction
2015
Project total value
6 million €
Geology
Historic stone and clay blockwork tunnel
Technical Data
Stabilisation grouting of historic structure:
• Main-Tunnel Length: 4,150 m
• High-performance grouting system by “Obermann”: 8 x DP63
• Grout pumped more than 3,000 m to injection location
• Carrying out stabilization grouting to allow safe removal of original inner blockwork lining (25-30 cm)
• Installed cement-grout (in total): 6,200 m³
Further project related information
• Permanent and temporary works design by BeMo Design Department
• Expected hydro-baric pressure > 3 bar at invert level
• Overburden between 8 to 30 m