WATCH: TERRATEC TBM breaks through in Lucknow
A TERRATEC tunnel boring machine (TBM) has broken through to complete the first tunnel of the US$1 billion Phase 1 Lucknow Metro North-South Line Project in Uttar Pradesh, India.
The TBM, named Gomti, was the first to break through at an official ceremony attended by workers and officials from TERRATEC, Gulermak–TATA Projects joint venture (JV), and the Lucknow Metro Rail Corporation (LMRC).
The capital of Uttar Pradesh, Lucknow, is the most populated state in India, and requires updated transport infrastructure to cope with the rapid population growth.
Phase 1 of the two-line Lucknow Metro System is being built at a cost of US$1 billion, and comprises a number of underground tunnels as part of the 22.88 km North-South line.
The 6.52 m diameter TERRATEC earth pressurised balance (EPB) TBM completed the first 3.44 km down-line tunnel in four months, followed by its sister machine on the up-line tunnel a day later.
The machines were selected for their capacity to tunnel through a mixed geology of stiff to hard clay-type silt and medium to dense sand, while also minimising impact on historic buildings, public utilities and traffic.
“This unique achievement was only possible due to the hard work and commitment of the Lucknow Metro project team,” said LMRC Managing Director Kumar Keshav
“The tunnelling in this stretch posed an enormous technical challenge as the route passes beneath highly congested areas at a depth of 12-15 m below ground.
“With this breakthrough, LMRC has achieved one of the biggest milestones in form of completion of first TBM drive in the construction of underground metro in the state of Uttar Pradesh.”
TATA Projects Managing Director Vinayak Deshpande said the team was proud to complete the challenging bore in a timely, quality manner.
“Due to many heritage structures, the stretch was highly challenging,” said Mr Deshpande.
“With excellent guidance from the LMRC team, state-of-the-art TBMs, and a dedicated, passionate, project team, the daunting task was completed in a world class manner with outstanding quality and before-time completion.
“We all at TATA projects feel very proud of this accomplishment.”
Phase 2 of the system is planned to commence in 2018.
For more information visit the TERRATEC website.
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Images supplied by TERRATEC