Interchanges are constructed using both cut-and-cover and tunnelling methods

“In the north-eastern part of the Big Circle Line (BCL) of the Moscow Metro, interlinkage work of the commissioned stations with the radial lines of the Moscow Metro continues”, said Andrey Bochkarev, Deputy Mayor of Moscow on Urban Planning and Construction. Mosinzhproekt Engineering Holding is a general designer and general contractor to construct new lines and stations of the Moscow metro.

“At present, the construction of interchanges from the Aviamotornaya and Elektrozavodskaya stations commissioned last year as part of the Nekrasovskaya line, to the Kalininsko-Solntsevskaya and Arbatsko-Pokrovskaya radial lines is continuing,” said Andrey Bochkarev.

According to him, both are being constructed using both cut-and-cover and tunnelling methods.

“The works at both stations are carried out in difficult hydro-geological conditions and in close proximity to the tunnels of the existing metro lines, in this regard, the state of the metro facilities is monitored around the clock,” explained Andrey Bochkarev.

In his turn, Yuri Kravtsov, General Director of Mosinzhproekt JSC, added that by the end of this year, as the excavation is being carried out at the Aviamotornaya station, the cut-and-cover construction of the main structures of the interchange hub and the installation of the excavation supports will begin. When the current tunnelling is complete, the underground construction will continue.

“The passway of the interchange hub with passages, which is being constructed by the tunnelling method, is 75% ready,” specified Yuri Kravtsov, underlining that upon completion of the work, passengers will have an opportunity to change to the Kalininsko-Solntsevskaya line without going up to the surface.

According to the holding head, in-situ concreting on the nearby Elektrozavodskaya station continues on the main structures of the interchange to the Arbatsko-Pokrovskaya line. The cut-and-cover works are 77% ready and the tunnelling is 36% ready.

“The escalators and the equipment have been installed at the interchange zone at Elektrozavodskaya,” explained the head of Mosinzhproekt.

As a reminder, the Big Circle Line is the key project of the Moscow Metro development and one of the largest in the world. There will be 31 stations 70 kilometres long, which will help relieve the load on the existing stations inside the Circle Line and on the Circle Line of the Moscow Metro.