Source: Moscow Metro
The tunnel boring machine «Sofia» has successfully completed the excavation of the second, left running tunnel from the under-construction Zvenigorodskaya station to the underground dismantling chamber near Shelepikha, which previously operated as part of the BCL.
The shield overcame 348 meters in difficult geological conditions. It took less than three months to complete.
«Sofia» has already laid the right tunnel in this section. Part of the route was excavated by miners manually, using small mechanization tools.
With the completion of this work, the entire mechanized tunneling from Shelepikha to Bulvar Generala Karbysheva with a length of 4.8 km has been completed. Both new tunnels will be integrated with the existing tunnels.
Previously, the shields «Natali» and «Victoria» completed the first section as part of the construction of the Line 17 between the stations Zvenigorodskaya and Narodnoe Opolchenie, and then to Bulvar Generala Karbysheva.
The first section of the new line will begin to work next year.
Line 17 will connect the business district of the Moscow International Business Center «Moscow-City» and the smart district SberCity. This line will have 12 stations, and there are plans to extend it to Krasnogorsk in the future.