Cityringen timeline
Cityringen won’t open until 2018 – but the work, including geotechnical surveys and archeological excavation, is already in full swing, as shown in the timeline above. The timeline will be updated with more details as the construction project develops.
Preliminary surveys
Geotechnical drilling along the Cityringen alignment. Data from the geotechnical drilling will be used to calculate how much earth pressure tunnels, stations and shafts can withstand. In addition, trial pumpings from the water-bearing layers in the subsoil will show where the water-bearing layers are located and how deep into the subsoil the effect of the construction work can be traced. This helps to prevent damage to buildings in the area.
Particularly vulnerable structures are measured and photographically registered in order to determine with precision whether the construction work will affect the structures around it.
The excavation of so-called injection wells, subterranean pockets which are filled with a stable material, helps ensure that the drilling of the tunnels affects the surrounding terrain as little as possible.
The final stage in the preliminary survey work is archaeological excavation. At a number of sites, particularly in the city core, archaeologists from the Museum of Copenhagen have been following the first phase of construction (see the section on changes to the utility grid below). At one site, the archeologists are carrying out a more comprehensive excavation to search for prehistoric finds and cultural artifacts that will teach us more about the history of Copenhagen.
Construction
Changes in the city’s utlity grid will be the first and most visible signs that Cityringen is becoming a reality. Supply lines for water, electricity, gas, district heating and telephone service will be affected. To make room for the actual construction of Cityringen, around one billion Danish kroner’s worth of utility grid supply line reroutings must be made.
The actual work of constructing tunnels and stations will begin once the grid has been modified to accommodate Cityringen.
The last phase will be the refurbishment of the areas around the new stations. Station areas, road surfacings and fittings such as signs and lighting will be reestablished.
