Injection Works Old Kaiser-Wilhelm Tunnel

General data on the structural maintenance project - Injection works Alter Kaiser Wilhelm Tunnel


Subterra a.s.


BeMo Tunnelling GmbH, Niederlassung West

Project location

Old Kaiser Wilhelm Tunnel
56812 Cochem

Start of construction


End of construction


Project total value

6 million €


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