Qatar Rail’s two tunnel boring machines (TBMs) have successfully completed their section of the tunnelling currently taking place on Doha Metro’s Green Line.
Starting in September last year the two TBMs, Al Rayyan and Al Gharrafa each underwent four breakthroughs before reaching the final destination at Msheireb and are now officially decommissioned.
Two of 21 TBMs used in the first phase of the Doha Metro project, the high-tech machines were part of Qatar’s entry into the Guinness World Records for having the largest number of tunnel boring machines operating simultaneously in a single project.
Qatar Rail project director Jassim Al Ansari commented on the achievement: “We are delighted that the Al Rayyan and Al Gharrafa TBMs have completed their section of tunnelling on the Green Line on time and to plan and can now be successfully decommissioned.
“This double milestone for the project’s overall progress shows how we are continuing to make good progress against our challenging objectives.
“To date 30km out of 33km has been tunnelled on the Green Line, a remarkable feat considering we began tunnelling less than eighteen months ago.”
The Doha Metro’s Green Line, which will take passengers from Al Riffa to Al Mansoura had six TBMs working on tunnels over 33km in length.
The two TBMs will now be dismantled and taken back to TBM supplier, Germany’s Herrenknecht local office in Doha where their parts will either be recycled or sold off.
The remaining four TBMs are expected to complete the work on the Green Line in early April this year.
Leatooriya will be the next TBM to complete its mission in the last week of February 2016 when is breaks through at the Education City Station, followed shortly by the remaining TBMs.
The first phase of the Doha Metro project is expected to be complete in the fourth quarter of 2019, while completion of the Lusail Tram is set for 2020.
All three networks – Doha Metro, Lusail Tram and the long-distance rail, which will link Qatar with the GCC Rail network – are expected to be completed by 2030 in line withte national vision.
With the completion of the first phase of the Doha Metro and Lusail Tram, Qatar Rail expects to offer 600,000 passenger trips per day by 2021, during which time all 37 metro stations are expected to be complete, with an average journey time of two minutes between adjacent stations.