Newsletter - Q2, 2019

FIRST TERRATEC TBM BREAKS THROUGH ON MUMBAI METRO

The first of seven TERRATEC TBMs being used on Mumbai Metro’s highly anticipated 33.5km underground Line 3 corridor, in India, breaks through on its inaugural drive.

n mid-February, TERRATEC 4.94km-long twin-tube Project Manager on Package Ijoined workers from the J. contract UGC-05 and 4.45km-long 6. “The machine has travelled Kumar – Railway No. 3 twin-tube tunnel contract UGC-06 successfully through mixed Engineering Group (CRTG) JV (stretching from Dharavi Station to geology and considerable to celebrate the breakthrough the CSIA International Airport). water ingress and we credit of a 6.68m diameter TERRATEC TERRATEC’s TBM field service dual-mode hard rock Tunnel “We congratulate TERRATEC support experts for assisting Boring Machine (TBM) at work on on the performance of the our tunnelling operations with Mumbai Metro Rail Corporation Dual Mode TBM T62 and the close monitoring throughout Ltd’s (MMRCL) Line 3 project, in completion of its first 690m this period.” India. The machine is one of three drive of from the [CSIA] new TERRATEC dual-mode TBMs International Airport Station The versatile TERRATEC single being used by J. Kumar-CRTG to Sahar Road Station,” said shield TBMs are equipped to to excavate portions of the line’s Haluk Emre, J. Kumar-CRTG’s Newsletter - Q2, 2019 Newsletter - Q2, 2019

operate in either Open or Closed from the Chhatrapati Shivaji north-central with 26 underground mode in the predominantly Terminal (CST) TBM launch shaft and one at-grade station (see A FLEET OF TERRATEC EPBMS GEAR UP FOR fresh and slightly to moderately and are currently mining towards map). weathered Basalt and Breccia the Mumbai Central Station TBM ACTION ON ’S NEW HALKALI expected on these contracts. The receiving shaft, having now Construction of the line is divided robust hard rock cutterheads are completed 3.7km of tunnel with into seven tunnel-and-station mounted with heavy-duty 17” disc progress rates of up to 525m per packages that were awarded to AIRPORT METRO CONNECTION cutters, which are interchangeable month. five contracting joint ventures in ERRATEC is pleased to The new TBMs will be used southwards to Halkali (which will with ripper tools, and feature large In total, the seven TERRATEC 2016. These five contractors will Tannounce the delivery of a by the Halkali-Yeni Havalimani also be the final terminus of the bucket openings that provide a machines have mined 9,462m deploy a total of seventeen (17) further two new 6.56m diameter Metro JV (consisting of Cengiz new railway). 10% opening ratio. (42%) of their planned drives to TBMs with TERRATEC being the Earth Pressure Balance Tunnel İnşaat, Kalyon and Kolin) on The robust TERRATEC TBMs have date. lead TBM supplier on the project Boring Machines (EPBMs) for the the Halkali-Istanbul New Airport versatile mixed-face dome-style Other state-of-the-art features When complete, Mumbai Metro’s with a 41% market share. ongoing expansion of Istanbul’s metro line, which was awarded cutterheads that have proven include 2,000kW Electric Variable much-anticipated Line 3 will be Metro system, in , to a consortium comprising to work extremely effectively in Frequency Drives – that allow the the first underground metro following successful factory Özgün Yapı and Kolin by the Istanbul’s mixed geology – which cutterheads to cut efficiently in line in the city. The 33.5km-long acceptance testing earlier this Turkish Ministry of Transport includes sandstones, siltstones, harder rock zones at maximum line will connect Cuffe Parade week. The new EPBMs, along and Infrastructure (AYGM). The limestones and volcanic rock – speeds of 7rpm and deliver an business district in the far south to with two other sister machines 31km-long line, along with 6 as well as other state-of-the-art exceptional torque of 8,500kNm to the Santacruz Electronics Export that have already been delivered new stations and connections, features such as VFD electric cope with more fractured zones of Processing Zone (SEEPZ) in the to the project, will bring the will form the western-leg of cutterhead drives, tungsten ground along the alignment – as number of TERRATEC machines the new Line that runs carbide soft ground cutting tools well as active shield articulation working concurrently on the from the recently opened that are interchangeable with 17’’ and built-in two component city’s metro to a total of nine. third International Airport on roller disc cutters, high torque backfilling grout systems. the European side of the city screw conveyors and active

In addition to the three new hard rock TBMs, TERRATEC has also supplied two re-manufactured 6.61m diameter mixed/rock Earth Pressure Balance Machines (S63 and S64) to J. Kumar- CRTG in Mumbai, which have been put to work on a section of highly weathered ground on contract UGC-05. “The TBMs are performing very well,” says TERRATEC Site Operations Manager, Bill Brundan. “The five J. Kumar-CRTG machines have excavated a total of more than 5.7km of tunnel to date.”

A further two new 6.68m diameter dual-mode hard rock TBMs are being used by the Hindustan Construction/Moscow Metrostroy JV to build the twin on the line’s 4.049km-long contract UGC- 02. Both machines were deployed Newsletter - Q2, 2019 Newsletter - Q2, 2019

TERRATEC TBMS DELIVERING RESULTS IN THAILAND aving delivered seven TBMs 2 tunnelling works for the Royal mining westwards from the Khlong Hto Thai underground works Irrigation Department’s Mae Tang- Ban Ma station box on January projects in the last three years Mae Ngad water diversion project. 12, 2019, and quickly got up to (representing every machine speed following its initial drive. By currently being operated in the In January, TERRATEC joined late-March, the TBM had already country), TERRATEC continues workers and officials in celebrating mined 400m – achieving progress to make great progress, with the launch of the 6.39m diameter rates of up to 18 rings per day a number of milestones being S70 EPB machine by contractor – and had undertaken its first celebrated over recent months. Italian-Thai Development intermediate breakthrough into a In Bangkok, solid results are PCL (ITD) on one of three ventilation shaft (IVS 17) where already being seen on the first underground civil works contracts it was undergroing a cutterhead phase of tunnelling for the Orange for the first 23km-long (East) inspection. Line metro project, as well as phase of the Mass on a number of tight radius Authority of Thailand’s (MRTA) The TERRATEC S70 TBM was Earth Pressure Balance Machine Orange Line Project. designed to tackle the variable soft (EPBM) drives for drainage and ground geology of the city – which cable tunnel projects accross Contract E3, which was awarded ranges from soft and medium to the capital. Meanwhile, in the to ITD in May 2017, totals over stiff and very stiff clays, with lenses northern province of Chiang Mai, 6km of TBM driven tunnel and of dense sand and the potential for two TERRATEC hard rock Double three underground stations, high pressure groundwater inflows Shields are achieving steady extending from Hua Mak to Khlong – as well as the need to mine articulation systems. 480km. Members of the JV were so constructed by the Kolin-Şenbay progress on the 25km-long Phase Ban Ma. The S70 machine began impressed with the performance of consortium), the refurbished through numerous diaphragm As the TBMs progress, they will previous TERRATEC machines used TERRATEC S42 machine is going With seven TBMs currently at work on major underground projects in Thailand, TERRATEC marks its latest milestone install 1,500mm wide by 300mm on the Mecidiyeköy-Mahmutbey strong, achieving a best day of 33 on Bangkok’s Orange Line metro project. thick pre-cast concrete lining rings, Metro, the Dudullu-Bostancı Metro rings (46m) earlier this month. which consist of five segments plus Line and the Ümraniye-Ataşehir- a key. Göztepe Metro contract – that they were keen to employ a further four “Terratec is excited to be providing TERRATEC machines on this latest yet more machines to metro projects project. in Istanbul,” says TERRATEC Sales & Marketing Director, Bruce Matheson. In March 2018, one the Dudullu- “We are confident they will perform Bostancı TERRATEC EPBMs as well as previous machines have completed an outstanding advance in the city and we look forward of 19 rings in a single shift (equating to breaking more records for on- to 28.5m of excavation in just time delivery, quick assembly and 12-hours), accomplishing a new excellent production rates.” production record for a TBM of this size and class in Istanbul. The Halkali-New Airport metro line is one of a number new metro More recently, on the other leg of the lines currently being built in the city new M11 International Airport metro that will increase Istanbul’s current line (the 37km-long Gayrettepe- 145km Metro network to more than New Airport metro line that is being Newsletter - Q2, 2019 Newsletter - Q2, 2019

wall shafts and, potentially, soft ground cutterhead features Universal style segments plus concrete piles. a spoke style and the addition of key, with an internal diameter of WATCH US ON back-loading knife bits to assist 5.7m. These are being produced A video featuring TERRATEC dual-mode TBM A video featuring TERRATEC TBM S76 at “We are in a very congested area break-in and break-out of the by ITD at the same factory These breaking through on UGC-06 in Mumbai Manufacturing Centre of the city, tunnelling underneath shafts. In addition, the machine are being produced by ITD at the a busy highway that has a flyover is fitted with an active bentonite same factory used for segment directly above it and buildings face support injection system manufacture during its MRT with deep foundations on both and double gated screw, to Blue Line underground works sides,” says Prakin Arunotong, ensure face stability and mitigate contract five years ago, which also Senior Vice President of ITD’s MRT settlement during excavation in employed a TERRATEC TBM. Business Unit. “So we need to areas of flowing sands and high carefully protect those structures groundwater pressure. In total, TBM tunnelling operations during tunnelling and station for ITD’s Orange Line (East) construction.” As the machine progresses along contract are expected to last the alignment, it is installing a approximately two years and In order to handle these precast concrete segmental lining are being assisted at all times by challenging conditions, the TBM’s consisting of five x 1200mm wide TERRATEC’s highly-experienced Field Service staff – who’s quality after sales support service has WHEREABOUTS created very loyal client-base in Thailand – to ensure optimum Meet TERRATEC at the following conferences and exhibitions! performance and successful project completion.

“We have worked closely with TERRATEC since 2012, when we won our MRT Blue Line extension contract,” says Arunotong. “TERRATEC has a very similar working style to our own and hhUnderground Works, Principle World Tunnel Congress 2019 because of this we consider and Application May 3-9 | Naples, ITALY our partnership with them as April 18-20, 2019 more of an ‘Alliance’ than that Bangkok, THAILAND of the traditional contractor-TBM manufacturer relationship.”

Bangkok’s new Orange Line will eventually total about 35.4km To subscribe to this with 26.2km aligned underground newsletter, please contact: with 23 underground stations and another 9km and seven stations [email protected] on elevated structures. When Tunnel construction In India, Rapid Excavation Tunneling complete, in 2023, the Orange Line Conference Conference will provide a vital transportation June 4-5 | Mumbai INDIA Jun 16-19 | Chicago, Illinois, link from Bangkok’s city centre to USA districts in the east, reducing traffic WWW.TERRATEC.CO congestion and paving the way for improved accessibility, economic growth and new residential and commercial opportunities along the alignment.