TERRATEC has delivered an Open TBM for the Municipal Corporation of Greater Mumbai’s (MCGM) Amar Mahal I Tunnel Project in Maharashtra, following the successful Factory Acceptance Test (FAT). The machine is now ready to be shipped to the site where contractor Soma Enterprise Limited will complete a water transfer tunnel in Mumbai, India. The first machine delivered last year is already working on the Amar Mahal II Tunnel Project and it is progressing smoothly. TERRATEC is committed to delivering TBMs on time even during tough times.
This machine is a 3.2m Diameter Open TBM designed to work efficiently in the geology expected along the project alignment. The project requires the TBM to have a modular design that allows it to be launched and potentially received via shafts (or alternately disassembled inside the tunnel). The robust cutter head is equipped with 18 heavy-duty back-loading disc cutters. The VFD controlled electric motors enabling the cutter head to rotate at over 10rpm with optimum torque.
To allow safe tunnelling through all the sections of the alignment, the machine has been designed with very efficient ground supporting equipment which includes a fixed probe drilling unit, two rock bolting drills, shotcrete pump and a steel arch erector.
The 3.2m diameter TERRATEC Open TBM will be deployed by contractor Soma Enterprise Limited, on the AMT-I tunnel which is one of many projects presently being carried out by the Municipal Corporation of Greater Mumbai (MCGM) to augment and improve its water distribution system to meet increased demand and ensure reliable supply.