TERRATEC is pleased to announce the delivery of a further
two new 6.56m diameter Earth Pressure Balance Tunnel Boring Machines (EPBMs)
for the ongoing expansion of Istanbul’s Metro system, in Turkey, following
successful factory acceptance testing earlier this week. The new EPBMs, along
with two other sister machines that have already been delivered to the project,
will bring the number of TERRATEC machines working concurrently on the city’s
metro to a total of nine.
The new TBMs will be used by the Halkali-Yeni Havalimani
Metro JV (consisting of Cengiz İnşaat, Kalyon and Kolin) on the
Halkali-Istanbul New Airport metro line, which was awarded to a consortium
comprising Özgün Yapı and Kolin by the Turkish Ministry of Transport and
Infrastructure (AYGM). The 31km-long line, along with 6 new stations and
connections, will form the western-leg of the new M11 Line that runs from the
recently opened third International Airport on the European side of the city
southwards to Halkali (which will also be the final terminus of the new
Marmaray railway).
The robust TERRATEC TBMs have versatile mixed-face
dome-style cutterheads that have proven to work extremely effectively in
Istanbul’s mixed geology – which includes sandstones, siltstones, limestones
and volcanic rock – as well as other state-of-the-art features such as VFD
electric cutterhead drives, tungsten carbide soft ground cutting tools that are
interchangeable with 17’’ roller disc cutters, high torque screw conveyors and
active articulation systems. As the TBMs progress, they will install 1,500mm
wide by 300mm thick pre-cast concrete lining rings, which consist of five
segments plus a key. “Terratec is excited to be providing yet more machines to
metro projects in Istanbul,” says TERRATEC Sales & Marketing Director,
Bruce Matheson. “We are confident they will perform as well as previous
machines have in the city and we look forward to breaking more records for
on-time delivery, quick assembly and excellent production rates.”
The Halkali-New Airport metro line is one of a number new
metro lines currently being built in the city that will increase Istanbul’s
current 145km Metro network to more than 480km. Members of the JV were so
impressed with the performance of previous TERRATEC machines used on the Mecidiyeköy-Mahmutbey
Metro, the Dudullu-Bostancı Metro Line and the Ümraniye-Ataşehir-Göztepe Metro
contract – that they were keen to employ a further four TERRATEC machines on
this latest project.
In March 2018, one the Dudullu-Bostancı TERRATEC EPBMs
completed an outstanding advance of 19 rings in a single shift (equating to 28.5m
of excavation in just 12-hours), accomplishing a new production record for a
TBM of this size and class in Istanbul. More recently, on the other leg of the
new M11 International Airport metro line (the 37km-long Gayrettepe-New Airport
metro line that is being constructed by the KolinŞenbay consortium), the
refurbished TERRATEC S42 machine is going strong, achieving a best day of 33
rings (46m) earlier this month.
For more information visit: www.terratec.co Media inquiries
info@terratec.co / pr@terratec.co.
To
view the press release please click here . 05/19
