Boring machine dismantled after completing Doha Metro tunnel section
With tunneling on the Doha Metro roughly 60 percent complete, some of the massive boring machines that have spent months underground are starting to surface.
Residents recently caught a glimpse one of the country’s 21 tunnel boring machines (TBM) at Qatar Rail’s Al Messila site, which is both a station location and logistics center located off Jassim bin Hamad Street near Al Rayyan Road.
The Al Rayyan TBM
Known as TBM S-846, or Al Rayyan TBM, the machine dug out more than four kilometers of the Doha Metro Green Line before achieving its final “breakthrough” at Msheireb central station, Qatar Rail said in a statement. The German-made machine is now being dismantled.
The Al Rayyan TBM is not the first to reach Msheireb. In June, Al Mayeda TBM broke through at Msheireb and was then transported by road to the Corniche station to start digging out the section of the Red Line towards the Doha Exhibition Center.
Earlier this year, Qatar Rail set a world record for the highest number of TBMs in operation at once.
While Al Rayyan TBM’s work may be done, more than a dozen others appear to be continuing to dig below Doha’s surface, according to an online map charting their progress.
A map showing the progress of TBMs.
In a recent speech to the American Chamber of Commerce in Qatar, Qatar Rail Managing Director Abdullah Al Subaie said contractors had completed 67km out of the 113km needed for the first phase of the Doha Metro, according to a report in The Peninsula.