Grouting and Ground Modification-Copenhagen Cityringen Project: Compensation and Jet Grouting as Mitigation Measures for TBM Operation Under Historical Building

摘要

The Cityringen project will form a new circular line in the city centre and will consist of 21 new stations (17 + 4 transfer station) and approx. 31 Km of EPB twin-bored tunnels.The new tunnels passed under the historical building of Magasin du Nord, McDonald's and two pubs in the heart of the city with a minimum cover of about 4 m.To minimize the movements, a complex system of compensation grouting and jet grouting soil treatment was performed. A detailed action plan between the parties involved allowed coping with the critical TBMs passage successfully.