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Rockfall protection measures Karawanken Tunnel
Construction of new rockfall protection fences, debris flow barriers and rock cross-links with system nailing.
Location
A11 Karawanken freeway, Karawanken tunnel north portal
Realization
2021
Departments
Services
In words
To reduce the risk of rockfall above the north portal of the Karawanken Tunnel, it was necessary to remove existing (static) rockfall protection fences and to build new (dynamic) rockfall protection fences with an energy absorption capacity of 500 and 2,000 kJ, respectively. Furthermore, rock netting including system nailing was erected to reduce surface erosion. A debris barrier with a height of over 4 m was erected in an exposed railing channel.
GDP TASKS
Preparation of the invitation to tender as well as bid evaluation and support during the awarding process
Local construction supervision
In pictures
