o:8710 Adaptation of tunnelling technical solutions to urban conditions: Case study Sava - Danube slope Tunnel en Tunnelling in urban conditions is often met with demanding criteria for surface settlement control, the limitation which is arising from the fact that most of the urban area is occupied by structures which are sensitive to deformations, such as buildings, roads, communal infrastructure etc. Another important necessity in any project is to deliver the project in shortest amount of time possible. Temporary occupation of public areas for construction sites and traffic congestions alleviate social pressure which further emphasizes these requirements. If planned correctly, TBM technology promises to deliver on these requirements more readily than conventional tunnelling techniques. In this paper a Case study of Belgrade’s double tube traffic tunnels is presented, in which project design went through significant conceptual transition, led by the designer’s idea to change the technology of excavation from conventional to TBM, as well as to adjust the project in multiple ways to accommodate for this major turn of tides. Most notable historic background of the project is presented. Geotechnical profile of tunnels and data are shown and calculations for both TBM and conventional variants are presented and discussed. shield TBM, urban tunnelling, numerical modelling, sensitivity analysis, ground settlement, structural response 1552099 10.5937/SETC25004D 1552100 978-86-82565-56-7 2025-12-12T13:04:54.984Z 44 no 46 Nikola Divac Jaroslav Černi Water Institute, Belgrade, Serbia Slobodan Radovanović Jaroslav Černi Water Institute, Belgrade, Serbia person 0000-0002-8437-9016 Jovan Šaponjić Jaroslav Černi Water Institute, Belgrade, Serbia person 0000-0002-2247-8916 Uroš Mirković Jaroslav Černi Water Institute, Belgrade, Serbia person 0000-0001-6781-5798 Nikola Mirković Jaroslav Černi Water Institute, Belgrade, Serbia person 0000-0002-5980-3049 Dejan Divac Jaroslav Černi Water Institute, Belgrade, Serbia person 0000-0002-1578-1431 application/pdf 2485736 https://unilib.phaidrabg.rs/o:8710 no yes 1 70 92000004 71A04 Proceedings of the Southeastern Europe Tunnelling Conference (SETC-2025), 1-3 October 2025, Belgrade, Serbia 31 42 Serbian Association for Tunnels and Underground Structures (ITA Serbia); Jaroslav Černi Water Institute, Belgrade 2025