Left Tongue
Header-Background Right Tongue
EN

Construction of the railway Tunnel Čortanovci,
Republic of Serbia
2018 - 2021

The tunnel has the following characteristics:

The total length of the left tunnel pipe
1.087,90 m
The length of the left tunnel pipe executed from the exit (northern) portal:
“Cut and cover” tunnel structure type
56,0 m
Excavated tunnel structure type
417,06 m
The total length of the right tunnel pipe
1.156,00 m
The length of the right tunnel pipe executed from the exit (northern) portal:
“Cut and cover” tunnel structure type
81,36 m
Excavated tunnel structure type
331,65 m
Useful width of tunnel opening
8,07 m
Useful height of tunnel opening
7,45 m
Minimum thickness of reinforced concrete arch
30,00 cm

Main executed quantities:

Tunnel excavation
74.300,0 m3
Concrete
21.000,0 m3
Shotcrete
19.500,0 m3
Reinforcement
2.100,0 t
Steel arches
1.900,0 t
Ø114 Steel pipes (L = 12,00 m)
107.152,0 m
Fiberglass anchors (d = 32mm, L = 12,00 m)
33.000,0 m
Radial anchors (d = 32mm, L = 6,00 m)
13.300,0 pcs
Micropiles (d = 38mm, L = 5,00 m)
8.100,0 pcs

General Information

Reconstruction, modernization and construction of double-track railway
Beograd-Stara Pazova-Novi Sad - Subotica – state border,
Section: Stara Pazova - Novi Sad,
Subsection: Construction of the railway Tunnel Čortanovci,
Republic of Serbia

Construction of the railway Tunnel Čortanovci
 

Construction works were started in March 2018.

The tunnel “Cortanovci” is part of the high speed railway line according to the design of the reconstruction, modernization and construction of double track railway line Beograd – Stara Pazova - Novi Sad - Subotica – state border, section: Stara Pazova - Novi Sad. On this section of tunnel design speed is 200 km/h. Due to complex geotechnical conditions of the tunnel location, the tunnel Cortanovci is designed with two separate tunnel pipes, each for one track. Axial distance of the tunnel pipes is 22,00 m on the entry zone and decreases up to 18,00 m on the exit portals.

For the observed geotechnical conditions both tunnel pipes are designed according to following tunnel structure types:
1. “Cut and cover” tunnel structure type in the exit section of both tunnel pipes;
2. Excavated tunnel structure type secured by a primary protective system.

Construction works were completed in February, 2021.

Construction of the railway Tunnel Čortanovci
 

Applied technology

For purpose of execution of the tunneling works in present geological conditions the new Austrian tunneling method is applied. Planned average advance speed on primary lining is 0.75 m pipe per day.