Bearing the name of a burrowing desert rodent, the state-of-the-art TBM conducts continuous, round-the-clock excavation.
Dubai has entered a key new stage in expanding its metro network, as the tunnel boring machine (TBM) Al Wugeisha begins excavating underground tracks for the Dubai Metro Blue Line.
Named after a small desert rodent in the UAE known for its burrowing skills, the machine represents efficiency and resilience as it cuts through diverse ground conditions. Built to handle hard rock, sand and mixed terrain, Al Wugeisha is set to play a crucial role in delivering the 30km Blue Line project.
Mohammed bin Rashid Al Maktoum gave the signal to begin operations, marking the official launch of tunnelling works.
Excavation will progress in three directions from International City 1 Station, with separate tunnel boring machines advancing towards Mirdif, the Auto Market, and Al Warsan.
Feast of engineering
The machine itself is a remarkable feat of engineering. Measuring 163 metres in length, with a diameter of 9.56 metres and weighing over 2,000 tonnes, it operates continuously, achieving an average excavation rate of 13 to 17 metres per day. Equipped with high-precision digital guidance systems and advanced monitoring technology, it ensures accuracy and efficiency throughout the tunnelling process.
Modern alternative
Tunnel boring machines like Al Wugeisha provide a modern alternative to traditional drilling and blasting, reducing ground disturbance while creating smooth tunnel walls. This helps lower construction costs and improves safety, especially in densely built urban areas.
During the launch, Mohammed bin Rashid Al Maktoum also reviewed the architectural designs of the interchange station at Dubai International City 1, which is set to become the largest underground interchange in the network. Spanning more than 44,000 square metres, the station is expected to handle up to 350,000 passengers daily.
Complex conditions
Engineered to handle challenging geological conditions, Al Wugeisha is equipped with a powerful cutterhead, hydraulic jacks that provide forward thrust, and integrated systems for spoil removal and slurry discharge. A protective metal shield and mechanical tail section help maintain stability during excavation, while onboard control cabins and logistics systems ensure smooth and efficient operations.
The TBM is also designed with sustainability in mind, operating with minimal environmental impact by preserving surrounding ground layers and creating uniform tunnel profiles that ease subsequent construction work.
Notably, Al Wugeisha has previously been used in tunnelling works for the Dubai Metro Red Line and Dubai Metro Green Line, highlighting its proven capability in delivering major infrastructure projects across the emirate.
