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Giấy phép số 4978/GP-TTĐT do Sở Thông tin và Truyền thông Hà Nội cấp ngày 14 tháng 10 năm 2019 / Giấy phép SĐ, BS GP ICP số 2107/GP-TTĐT do Sở TTTT Hà Nội cấp ngày 13/7/2022.
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On the evening of 13 April, TBM-2 named “Táo Bạo” officially arrived at the S12 underground station, Hanoi Station, completing the full tunneling journey through four underground stations of Line 3, Nhổn – Hanoi Station, according to the Hanoi Urban Rail Management Board.
TBM “Táo Bạo” is the last tunnel boring machine to complete the 4-km underground tunnel, passing through underground stations S9 Kim Ma, S10 Cat Linh, S11 Văn Miếu, and S12 Hanoi Station. The completion of TBM-2 marks the connection of the entire underground tunnel segment of the project.
Previously, TBM-1 named “Thần tốc” completed tunneling the first tunnel boring on 1 December 2025. The completion of TBM-2 means the underground tunneling work for this segment has reached a key milestone.
The machine began its journey from Kim Ma Station S9 on 3 February 2025, then passed through Cat Linh Station S10 on 15 September 2025 and Van Mieu Station S11 on 13 January 2026, before completing at Hanoi Station on 13 April 2026.
During construction, the TBM operated steadily, installing thousands of tunnel lining rings. The work followed technical standards and focused on safety for surface works, particularly in densely populated areas and near heritage sites.
Representatives of the Hanoi Urban Rail Management Board said the project’s underground portion includes 4 km of tunnels, 4 underground stations, and 1 emergency shaft. They reported the project is currently at about 63% of the total workload, with Package CP03 at 76.69%.
Units are continuing remaining items, including in-tunnel structures, completion of the underground slope, underground stations, lane transfer roads, parking garages, and roads around Thu Le Lake.
The Nhổn – Hanoi Station Metro project is described as a key transport initiative for the capital, expected to help reduce traffic congestion, improve public transport capacity, enhance the environment, and support sustainable urban development.
Throughout construction, the project used modern geotechnical monitoring systems to continuously track ground movement, subsidence, and the stability of surface structures. The investor said completing all underground tunneling work is an important milestone, affirming the participating units’ capability to master urban tunnel construction technology in Vietnam.

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