By rosebell
In order to supporting another TBM on Phase 1 of the Metro Manila Subway Project, Terratec continuously advancing tunnel conveyors are being prepared.
The scheduled date for assembling the TBM3 is January and it is due to be supported by Terratec continuously advancing conveyors C11 and C12.
With an operation rate of 225m3/hour, the conveyors are 1,850m long and have a single pulley head drive power of 160kW, and they can handle the various materials extracted by the TBM along the length of the drive.
While being designed to handle mixed materials, including sandy gravel and boulders up to 400mm in diameter, the conveyors can be adapted to 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.
Construction of the CP101 section was up to Shimizu-Fujita-Takenaka-EEI Joint Venture, and is expected to yield almost 1.2 million m3 of excavated material. The entire alignment is going to generate around 7,419,940m3.
Linking Mindanao Avenue in the northern part of Metro Manila to Western Bicutan in the south, the CP101 33.1km subway section is advancing by a total of four Terratec conveyors, which are all currently in place at the section between the Metro Manila Subway Depot and Quirino Highway.
At the moment, the 1,500m-long Terratec C09 and C10 conveyors, which supported TBM1 and TBM2 in their successful breakthrough at Quirino Highway Station, are being dismantled and stored.
Following completed its test run, TBM4 is slated to resume excavation this month.
As the first underground railway system in the Philippines, the Metro Manila Subway Project is totally using six TBMs and the determined date for inaugurating the subway is 2028 and will carry 370,000 passengers a day.
