Extension Line 2 Metro Tbilisi

Georgia

Datos del Proyecto

Cliente: Transport Tbilisi Company

Localización: Tbilisi | Georgia

Estado: Completed

Área de Negocio: Specialized Facilities and Maintenance (Railway Installations)

Descripción del Proyecto

A design contract for the supply, installation and commissioning of the extension of Line 2 of the Tblisi Metro and construction of the new University Station.
The contract involved the full range works:
Rehabilitation and waterproofing of 2.6km of tunnel including the University Station, auxiliary chambers, escalator shaft and station cavern.
Demolition of the existing passenger platform at the station due to its state of deterioration.
Excavation and construction of the street level accesses of the station.
Installation of 2.5km of ballastless track.
Installation of two sets of points. Installation of points motors.
Adaptation and construction of the underground chamber for the traction substation.
Development of the metro signaling system with electronic interlocking and compatibility with the existing Soviet inherited technology, circuit breakers, track circuits and automatic train protection (ATP) with audio frequency signals.
Construction of the new emergency exit from the platform to the exterior.
Outdoor landscaping in the vicinity of the station.

Installation and start-up of the following installations: traction substation, TETRA Radio communication, structured cabling, SDH telecommunications network, operation telecommunications compatible with existing Soviet technology, escalators reaching 60m in vertical drop in a single section, tunnel ventilation, drainage pumps, tunnels lighting, CCTV installation, installation of Building Management System, air conditioning, high voltage lines from the existing substations to the underground traction SET and supply to the station.
At some points, the depth of the tunnels reached 60 meters which caused great difficulties in access and logistics.
Being an extension project, the difference between existing and modern installed technologies also generated a great technological challenge requiring the development of compatible systems between new and old equipment.