On the morning of July 12, 2021, the first tunnel of the large-diameter shield project of the East Section of the third transfer ring line of the China Railway Construction Moscow Metro was completed, marking the first tunnel completion of the first large-diameter shield project of a Chinese enterprise in Europe.

It is understood that the total length of the project is 2.677 kilometers. It is the first time that a Chinese company has used the 11-meter-class large-diameter shield machine "Shengli" independently developed in the construction of large-diameter subway shield projects in overseas markets. The "Victory" shield machine is currently the largest diameter shield machine exported to Europe from China. It is tailor-made for China Railway Construction for the extremely cold winter construction environment in Russia. Its muck removal system is equipped with a 22-layer super storage belt warehouse. Make sure to tunnel normally in a low temperature environment of minus 30 degrees.

According to Gao Yutian, the project manager of China Railway Construction’s Moscow Metro Shield, the tunnel construction has been integrated into the subway construction experience of China and Russia, and a special construction plan has been formulated to smoothly achieve zero settlement and pass through the Kolomenskoye Manor built in the 15th century. Foundation ancient building. He also said that by using rubber-tired locomotives instead of diesel locomotives to assist the tunnel construction, the risk of rolling accidents caused by the steep excavation gradient was avoided. China Railway Construction has improved the speed of the project by optimizing the organization model, with a maximum monthly excavation mileage of 433.8 meters.

It is reported that since China Railway Construction entered the Russian market, it has successively implemented a number of projects such as the Moscow Metro, the Moka Expressway and the Blagoveshchensk-Heihe cross-border ropeway. The completion of the tunnel lays a solid foundation for China and Russia to carry out more practical cooperation in the field of subway construction. Editor/Tian Zengpeng