By Staff writer
Tunnel boring machine at Corniche station on Red Line is relaunched after being damaged in flooding incident
Qatar Railways Company has announced the successful relaunch of its tunnel boring machine (TBM) at the Corniche station on the Doha Metro's Red Line, three months after it was damaged in a flooding incident.
The repair process, split into cleaning, rewiring and re-installation phases, covered the replacement of damaged equipment and approximately 80 percent of the machinery was changed, the company, also known as Qatar Rail, said.
It said in a statement that the repair moved "at considerable speed", meaning that the initial timeline for the completion of both the Red Line and Doha Metro were unaffected.
The TBM relaunch followed a flooding incident that affected its works at the Corniche station during tunneling operations in mid-February in which no injuries were reported.
Qatar Rail said tunneling works, initially five months ahead of schedule at the Corniche station, are still respecting the assigned timetable after spending only three months on rehabilitation works.
Saad Ahmed Al Muhannadi, CEO of Qatar Rail, said: "We are very aware that such a complex tunneling project is prone to incidents of this sort and our planning processes identify what are the most likely risks and plan for them.
"Thanks to the prompt reaction, rehabilitation process took only 3 months while comparable events usually need from 6 months to one year and a half to reach recovery. Tunneling incidents are complex, however we were able to prove efficiency and swiftness in dealing with it."
Qatar Rail confirmed that it has now completed 30km of tunnels. When complete the Doha Metro will have 113km of tunnels.
Qatar Rail has already received the 21 TBMs assigned for the project, after being imported from Herrenknecht, the German world market leader in mechanized tunnelling technology. All Qatar Rail TBMs are currently operational, with the tunneling phase expected to be completed by the second quarter of 2017.For all the latest construction news from the UAE and Gulf countries, follow us on Twitter and Linkedin, like us on Facebook and subscribe to our YouTube page, which is updated daily.