Minsk to buy second tunnel boring machine to speed up subway construction

Minsk to buy second tunnel boring machine to speed up subway construction

Photo: sb.by

Minskmetrostroi, which builds subway in Minsk, plans to hold a tender for the purchase of another tunnel boring machine. This will significantly accelerate the construction of tunnels of the third subway line in the Belarus capital.

The first mechanized tunnel boring machine for the construction of the Minsk metro, assembled in France, cost the city's budget nearly $12 million and was put into operation in February 2016.

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During this time, it dug one tunnel from the station Vokzalnaya to the station Yubileinaya (being significantly behind schedule) and now it is laying a parallel tunnel in the same direction. As of January 17, 720 concrete rings (each 1.4 meters wide) were mounted in this tunnel.

For laying other tunnels, subway builders use old boring methods. In terms of physical strength this is practically miner's work - the ground is chopped with shovels and jackhammers, and then raised delivered to the surface by electric haulage. This method allows moving forward 2-3 meters per day at most.

Under favorable conditions, a mechanized complex can overcome up to 15 meters per day.

In the spring of 2016, information appeared that the purchase of the second mechanized tunneling complex for the Minsk metro was no longer considered. Apparently, after some time this decision was revised.

"A drastic renewal of the fleet of equipment has been outlined in the future business development plan. Thus during 2018 Minsk intends to hold a tender to purchase a second mechanized tunnel boring complex," Minsk Novosti agency quotes Minskmetrostroi acting director general Arkady Arutyunyan as saying.