Extension of metro line A Dejvická - Nemocnice Motol

Urban Metro
Prague

The aim behind extending line A of the Prague metro was to improve the quality of transport services in the northwest sector of Prague.

Basic information

Project Investor:

Dopravní podnik hl. m. Prahy

Project Designer:

Metroprojekt Praha a.s.

Project Duration:

12/2009 – 06/2014

Characteristics

The aim behind extending line A of the Prague metro was to improve the quality of transport services in the northwest sector of Prague. High-capacity metro transport has reduced the number of bus lines in this area. Moving the terminal station closer to the outskirts of the metropolis has ensured the connection of the largest Prague hospital in Motol and has brought metro line A closer to the Ruzyně airport.

Project in numbers

  • 4 new stations Bořislavka, Veleslavín, Petřiny, Nemocnice Motol
  • 6,134 m Total length of the line
  • 825,5 m Double-track sections
  • 2x 4,051 m Single-track sections – TBM mining
  • 1,332 m Road sections

Exceptionality of the structure

Mining with TBM-EPB S-609 (Tonda) and S-610 (Adéla) full-face tunnelling machines

Parameters: machine type – earth shield, length including trailing gear – 102 m, weight 680 t, installed power 1200 kW, rotation speed of cutterhead 3 rpm, mining speed Ø 35 mm/min, Ø daily output 15 common metres, one ring (1.5 m) assembled in Ø 35 minutes, total number of rings 5,565 pcs.