Tunnel refurbishment - a job with surprises / Tunnelsanierung - eine Arbeit mit Überraschungen
|Issue:||"Geomechanics and Tunnelling", 2010, n. 6 v. 3|
The term tunnel refurbishment is mostly understood to mean the upgrading or improvement of underground cavity structures like rail or road tunnels and also structures for hydropower stations and underground operations. Before starting refurbishment measures, it is absolutely necessary to survey the exact condition of the existing structure. This survey of the actual condition cannot be based on the assumption that the available design documents correspond to the facts on site. It is therefore sensible, or even essential, to call on engineers, whose experience goes back to the time the relevant construction methods were in use and who can visualise the ideas of the former state of technology. This basic knowledge is necessary in order to plan adequate and correct investigations so that certain results can be obtained for the design of the refurbishment works.
|Keywords:||Tanzenberg tunnel, Massenberg tunnel, delays, quantity changes, variations in the construction of the works, additional new works, investigation of an existing tunnel, documentation, Tanzenbergtunnel|
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