TERRATEC Continuously Advancing Tunnel Conveyors are currently being deployed on Phase I Contract Package CP101 of the Metro Manila Subway Project in Manila, Philippines, as selected by the Shimizu-Fujita-Takenaka-EEI Joint Venture, the contracting team working on behalf of the country’s Department of Transportation.
The Metro Manila Subway Project is the first underground railway system in the Philippines. A total of six TBMs are being employed, with TERRATEC’s conveyors charged with efficient spoil removal throughout the excavation process.
A total of four of the company’s Continuously Advancing Conveyors are active in the construction of the 33.1km subway section, connecting Mindanao Avenue in the northern part of Metro Manila to Western Bicutan in the south. The four tunnel conveyors, delivered for CP101, are currently in place at the section between the Metro Manila Subway Depot and Quirino Highway.
TERRATEC C09 & C10 Continuously Advancing Conveyors, 1,500m in length, supported TBM1 and TBM2 in their successful breakthrough at Quirino Highway Station after just 11 months of operation. These conveyors are now being dismantled and stored. Meanwhile, Continuously Advancing Conveyors C11 & C12 are preparing to support TBM3 (assembly scheduled for January 2025). TBM4, having completed its test run, will resume excavation in December 2024.
Designed to meet the specific demands of the project, TERRATEC C11 & C12 Continuously Advancing Conveyors are 1850m long and can operate at a rate of 225m3/h. With a single pulley head drive power of 160kW, these conveyors are designed to be capable of efficiently handling the various materials extracted by the Tunnel Boring Machine along the entire length of the drive.
These conveyors are designed to handle mixed materials, including sandy gravel and boulders up to 400mm in diameter, with designed in adaptability for the challenging ground conditions. Key features include hydraulic tensioning for horizontal cassettes, wider-than-standard roller sets for enhanced tolerance, and two-roll vee-return idlers for improved tracking. TERRATEC’s patented advancing tail piece, employing an active hydraulic system, ensures smooth negotiation of curves, maintaining efficient spoil transport even in unsteady conditions.
The CP101 section alone is expected to yield approximately 1.2M cubic meters of excavated material. The entire alignment will generate around 7,419,940 cubic meters. Upon completion in 2028, the Metro Manila Subway is projected to serve up to 370,000 passengers daily.
Terratec
Incorporated 30 years ago, TERRATEC is one of the world’s leading designers and manufacturers of Tunnel Boring Machines, encompassing all...
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