“The first tunnel between the future Vavilovskaya and Novatorskaya stations on the Troitskaya metro line has been completed”, said Andrey Bochkarev, Deputy Mayor of Moscow on Urban Planning and Construction.

Mosinzhproekt Group of Companies is a general designer and general contractor to build new lines and stations of the Moscow Metro.

“The 6-metre-diameter tunnel boring machine ‘Svetlana’ has covered the 1,050-metre-long right running tunnel between the Vavilovskaya and Novatorskaya stations of the Troitskaya Line”, said Andrey Bochkarev.

According to him, tunnelling of the neighbouring left running tunnel between Vavilovskaya and Novatorskaya continues in parallel, where the “Lyudmila” tunnel boring machine has already completed 90% of the planned route.

Yuri Kravtsov, General Director of Mosinzhproekt JSC, said that the tunnelling work was carried out in dense urban development with a large number of utilities: the route went under the Leninsky Prospekt alley and the underground pedestrian crossing.

“There is quite a variety of hydrogeology at the running line. The ‘Svetlana’ started in fine and dusty sands and finished in semi-solid loam with crushed rock inclusions, having entered the dismantling chamber as part of the Novatorskaya station complex”, specified Yuri Kravtsov.

The head of the engineering holding also reminded that all in all this TBM in Moscow has covered almost 16 km of tunnels on a number of sections of the Arbatsko-Pokrovskaya, Lyublinsko-Dmitrovskaya, Kalininskaya, Nekrasovskaya and Solntsevskaya Lines of the Moscow Metro.

The 40 km long Troitskaya Line will connect the platforms of the Moscow Central Circle (MCC) with the city district of Troitsk, going through the Southern, South-Western, Troitsky and Novomoskovsky districts of the capital. About 1 million people live near the new stations, and several hundred thousand more work or study nearby.