Type of work

Tunnels

Atocha-Chamartín High speed line tunnel

Spain

  • Tunnel depth
  • Construction of the AVE tunnel at Chamartin
  • Construction of the AVE tunnel at Chamartin
  • Construction of the AVE tunnel at Chamartin
  • Tunnel construction
  • TBM assembly
  • TBM assembly
  • Tunnel depth
  • Construction of the AVE tunnel at Chamartin
  • Construction of the AVE tunnel at Chamartin
  • Construction of the AVE tunnel at Chamartin
  • Tunnel construction
  • TBM assembly
  • TBM assembly

Description

The works consist of the execution of the platform and a railway tunnel to connect the Atocha and Chamartín stations, both of which are in Madrid and for exclusive High-Speed AVE train transit.

The tunnel allows the coordination of the railway connection with destination or origin in the southern and eastern half of Spain with the lines in the north.

Bored to accommodate double international track and width, the tunnel length is 6.82 kilometers. 

Most of the tunnel was excavated with a tunnel boring machine (TBM), except one 110 meters section near Chamartín Station, which was executed on the surface. The tunnel was lined with 1.8 x 0.36 voussoirs that were assembled by the TBM and it also has eight emergency exits.

It also includes the remodelling of the marshalling yard at the south head of Chamartín Station in order to enable the arrival of the high-speed here through the tunnel that will connect with the future expansion of Puerta de Atocha Station.

This railway connection between Atocha and Chamartín stations forms an essential infrastructure for the development of a vertebral network of international width in Spain.

Highlight

  • The tunnel execution was an engineering challenge, given the urban environment in the which it was executed; requiring multiple crossings with existing heritage buildings, and transport infrastructure.
  • A tunnel that allows the coordination of the railway connection between the southern and eastern half of Spain and the north.
  • It increases safety, with the adoption of cutting-edge technologies in automatic train driving systems.

Type of work

Tunnels

Barcelona Metro Line 9

Spain

Section 4 Bon Pastor - Can Zam.

Section 4 Bon Pastor - Can Zam.

Description

The line connects the neighbourhood of Bon Pastor with Oliveres. Section 4 of line 9 of the Barcelona metro, was 4.29 kilometers, and was executed by tunnel boring machine. Construction was carried out with a TBM capable of working in open mode and closed (EPB).

Type of work

Tunnels

Barcelona Metro Line 9. Southern section

Spain

Description

The extension of the southern section of line 9 joins the University Zone station, in the district of Les Corts, with the T-1 and T-2 terminals of the Prat airport. FCC built 14.9 kilometers of tunnels to cover; 7 stations and 13 ventilation wells, with a total of 19.5 kilometers underground and 13 stations in the
entire section

 

In 2017, the section of Metro Line 9 was awarded Section University Zone-T1 Barcelona Airport.

Type of work

Tunnels

Bracons Tunnel

Spain

Description

The Bracons tunnel is located on the Torrello - La Vall section d’en Bas of the new Vic - Olot road (Barcelona). Has a total length of 4.57 kilometers. The construction method employed was the New Austrian Method (NATM), digging the tunnel to full section and using seven types of support. 

Highlights

The construction of this infrastructure was of paramount importance for the Vic - Olot road, reducing the time taken to travel between the two communities by half.

Type of work

Tunnels

Coatzacoalcos tunnel

Mexico

The first immersed tunnel in Latin-America

The first immersed tunnel in Latin-America

  • The Coatzacoalcos immersed tunnel
  • The Coatzacoalcos immersed tunnel
  • The Coatzacoalcos immersed tunnel
  • The Coatzacoalcos immersed tunnel
  • The Coatzacoalcos immersed tunnel
  • The Coatzacoalcos immersed tunnel
  • The Coatzacoalcos immersed tunnel
  • The Coatzacoalcos immersed tunnel
  • The Coatzacoalcos immersed tunnel
  • The Coatzacoalcos immersed tunnel

Description

The submerged tunnel of Coatzacoalcos is located southeast of the state of Veracruz (Mexico). This tunnel which was partially submerged and was made with reinforced concrete, post-tensioned longitudinally. It has a total length of 1.14 kilometers, of which 696 meters was submerged. The tunnel was constructed using the Cut and Cover method.

The Coatzacoalcos Tunnel represent technological innovation in construction, because the Immersed-tunnel Method allows the prefabrication of reinforced concrete tunnel sections in a dry dock, prepared to be floated, tugged and positioned on the marine bed without any need for special subsoil drilling equipment

The project also includes two buildings or portals on the east and west sides, located on both sides of the immersed tunnel, that house the electromechanical installations.

A control building is also installed on the toll plaza that fulfils the functions of administration and control.

Responsible

The project includes all the required installations for adequate works operation and control, together with the lighting system, ventilation system, carbon monoxide detection system, the SOS system, the fire detection system, the variable sign system, the CCTV system and the public address system.

The tunnel includes an integral safety system, with video-surveillance and control for real-time monitoring and control of tunnel status, thus guaranteeing its efficient management and ensuring user safety.

The project took into account that navigation along the River Coatzacoalcos during works execution was not to be affected.

Highlights

  • This piece of infrastructure was the first submerged tunnel of Latin America.
  • Currently more than 26,000 vehicles make use of the tunnel daily.
  • Constructed using the Immersed-tunnel Method that did not require the use of any special subsoil drilling equipment.