2.2 Kilometer of tunnelling under dense urban areas completed on Moscow's Big Ring Metro Line west section. It is 10 meters in diameter with two rail tracks.

TBM Lilia finished tunnelling just under 2 years. Ahead of schedule.

For passing under the Moskva River in water-saturated soils, the technology of constant soil loading in the face chamber has been used. During tunnelling, the TBM Lilia also had to bore under the existing Arbatsko-Pokrovskaya and Filevskaya lines.

https://vm.ru/transport/834806-liliya-proshla-pod-rekoj-shit-gigant-postroil-tonnel-za-dva-goda