Tunnel Design and Underground Engineering Solutions
Sunko Proje develops comprehensive tunnel engineering solutions for challenging geological conditions and complex transportation corridors. Our experience covers TBM and NATM tunnels, cut-and-cover structures, geotechnical engineering, structural design and tunnel electromechanical systems.
TBM Tunnel Design Projects
Tunnel Boring Machine technology enables controlled and efficient excavation under complex geological conditions. Sunko Proje provides engineering support for TBM tunnel alignment, machine selection, structural design and overall tunnel system integration.
NATM Tunnel Design Projects
The New Austrian Tunnelling Method provides flexible tunnel support solutions adapted to actual geological and geotechnical conditions. Sunko Proje designs excavation stages, primary support systems and structural measures according to ground behaviour.
Cut-and-Cover Tunnel Design
Cut-and-cover tunnels are frequently used for urban crossings and shallow underground structures. Sunko Proje develops solutions that coordinate excavation, temporary works, permanent structures and surrounding infrastructure.
Tunnel Electromechanical Systems
Tunnel operational safety depends on reliable electromechanical systems. Our design scope includes ventilation, lighting, fire safety, emergency systems and other critical tunnel installations.
Tunnel Structural Design
Structural analyses and tunnel lining design are developed to provide the required load-bearing capacity, durability and long-term structural performance under project-specific conditions.
Tunnel Geotechnical Engineering
Geological and geotechnical conditions along the tunnel alignment are evaluated in detail. Sunko Proje performs geotechnical analysis and develops ground support, stabilisation and improvement solutions.
Selected Tunnel References
Selected highway and railway tunnel projects demonstrating Sunko Proje's tunnel design and multidisciplinary engineering experience.
| Project Name | Project Type | Length | Intersections | Tunnels | Bridges | Service | Client | City |
|---|---|---|---|---|---|---|---|---|
| Şırnak – (Pervari – Narlı) Road | State Road | 45 km | 2 Level Crossings | 12 Tunnels (15 km) | — | Design and Consultancy | Limak Construction | Şırnak |
| Şırnak – (Pervari – Narlı) Road – 12 Tunnels | State Road | 45 km | 2 Level Crossings | 12 Tunnels (15 km) | — | Design and Consultancy | Limak Construction | Şırnak |
| Nallıhan – Dokurcun Road | Road, Bridge & Tunnel | — | — | 4 Tunnels (Double Tube) | 21 Bridges | Design and Consultancy | General Directorate of Highways | Nallıhan |
| Balıkesir North Ring Road | State Road | 18 km | 6 Grade-Separated Intersections | 2 Tunnels (2x2) | 4 Viaducts | Design and Consultancy | General Directorate of Highways | Balıkesir |
| Karabük Ring Road | State Road | 18 km | 4 Grade-Separated Intersections | 3 Tunnels (Total 24 km, 2x2) | 22 Bridges + 4 Viaducts (1,095 m) | Design and Consultancy | General Directorate of Highways | Karabük |
| Bahçe – Nurdağı High-Speed Train Line Tunnels | Railway | 11 km | — | 6.8 km Tunnel (Double Tube) | — | Design and Consultancy | General Directorate of Highways | — |
