TBMs Prepare for Deployment on Fortezza Railway Tunnel

Why It Matters

The machines enable faster, safer construction of a key trans‑regional rail link, boosting transport capacity and economic development in northern Italy.

Key Takeaways

• Two 9.68 m diameter TBMs ready for Italy tunnel.
• Each weighs 2,600 t, 175 m long, 12.75 km drives.
• Designed for hard rock, fault zones, long distances.
• Features permanent magnet motors and automated segment handling.
• Aims to boost Verona–Fortezza rail capacity.

Pulse Analysis

The Verona–Fortezza rail link is entering a critical phase as China Railway Construction Heavy Industry (CRCHI) rolls out two single‑shield tunnel boring machines (TBMs) for the 12.75‑kilometre twin‑tube tunnel. Built in Changsha and delivered on 26 March, each machine measures 175 metres in length, weighs roughly 2,600 tonnes and drills a 9.68‑metre diameter bore. Such dimensions place the machines among the largest currently operating in Europe, underscoring CRCHI’s growing footprint in high‑profile infrastructure projects beyond China.

The TBMs incorporate a suite of advanced features aimed at tackling the tunnel’s hard‑rock geology and multiple fault zones. Permanent‑magnet synchronous motors deliver higher torque with lower energy consumption, while a synchronous tunnelling and segment‑erection system automates lining installation. Adaptive power management and wear‑resistant cutterheads boost rock‑breaking efficiency, reducing cycle times and minimizing downtime. Integrated human‑machine interfaces improve operator ergonomics and safety, helping the project meet stringent EU environmental and occupational standards.

Upon completion, the Fortezza tunnel will add a strategic north‑Italian rail corridor, increasing capacity on the Verona–Fortezza axis and supporting regional economic growth. Faster freight and passenger services are expected to shift traffic from congested road networks, contributing to lower emissions and enhanced connectivity. The deployment also signals a broader trend of Chinese TBM manufacturers supplying sophisticated equipment for European megaprojects, potentially reshaping competitive dynamics in the global tunnelling market.