We also liked that Robbins EPB machines are designed with active articulation to allow the machine to turn or steer with ease.”ĭuring active articulation, thrust cylinders react evenly against the entire circumference of the tunnel lining, even in a curve - a design that eliminates the problem of tunnel lining deformation. Explore Tata Projects Jobs, Reviews, and Salaries at. Dey, “We chose this machine for this project due to the underground geology in Chennai, which continuously changes from soil to mixed ground. Apply to Walkin: 26 Feb:: Mechanical/ Electrical/ Civil/ Instrumentation Engine Jobs in Tata Projects, Mumbai from 8 to 13 years of experience. afcons mumbaimetro mumbai metrorail metroconstruction viaduct kashelicreek Liked by Selva Peeps The four-laning and upgradation of National Highway-1 from Khanna to Jallandhar, Punjab, was the first highway project of Afcons. “At this stage, we had to closely monitor TBM’s face pressure and advance the machine at a uniform rate to ensure proper primary grouting.” The bore’s geology mainly consisted clayey sand and about 60 meters (197 ft) of mixed ground.Īdds Mr. Mumbai’s first Metro viaduct over Kasheli Creek completed. Our portfolio comprises of 5 elevated and 2 underground metro projects, totaling approximately 25 kms of metro corridor and 10 metro stations.
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“When the TBM came out of the launching shaft, a few rings were erected, and then the machine had to cross a live railway track, which meant there would be a possibility of ground settlement,” says Afcons Director, Mr. AFCONS’ first metro project began with tunneling work for Kolkata in the late eighties. According to contractor Afcons, the machine faced a major challenge right out of the gate. Find 4+ 3 BHK Flats for Rent, 3 BHK Houses for Rent. The EPB was launched on February 3, earlier this year. Afcons, the engineering and construction arm of the Shapoorji Pallonji Group, has won a USD 530-million contract to construct the largest-ever infrastructure project in the Maldives. Explore 4+ 3 BHK Properties for Rent in Ayyappa Nagar, Krishnarajapura, Bengaluru on. These changes optimized the machine for excavation in the highly variable mixed face conditions encountered in the first two tunnels. Afcons Infrastructure-led consortium has secured two major metro projects in Chennai, amounting to Rs2598 crore.
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During refurbishment, the inner seal greasing system was changed from auto to manual mode, and the foam nozzle system was modified. The Robbins EPB was originally supplied in 2012 for twin bores in weathered and highly fractured granitic rock, also part of the Chennai Metro project.Īfter completing its original twin tunnels, the EPB was refurbished in preparation to bore its latest 1.8 km (1.1 mi) section.
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