By rosebell
With 3.85m-diameter a rock slurry TBM, which is operated by J Kumar-MEPL JV on the Brihanmumbai Municipal Corporation project, is working on the Mumbai Sewer Disposal Project (MSDP) Stage-II – PST-1 and has made its first breakthrough.
In order to improving wastewater collection, treatment, and disposal processes, upgrading Mumbai’s sewerage infrastructure involves constructing two priority sewer tunnels (PST-1 & PST-2).
The 3.85-diameter rock slurry TBM for the 5.8km PST-1 and a 3.14m-diameter rock EBP TBM for the 4.7km PST-2, are the machines that Terratec has supplied for the project.
As the smallest of its kind in India, the rock slurry TBM achieving a daily advance of up to 18 rings in fresh rock,has demonstrated impressive excavation rates.
It employs a 5+1 universal type segment design, featuring reinforced concrete segments 200mm thick and 1200mm wide. The TBM also features a Terratec slurry transportation system and slurry treatment plant.
The Malad Pumping Station’s launch shaft was the location that the 3.14m-diameter rock EBP TBM for PST-2 was lowered into on July 20, whereas it is one of the smallest diameter EPBMs to be deployed in India.
With aim of decreasing wastewater flow into existing collector sewers, and decommissioning pumping stations, the MSDP involves constructing shafts and upstream connections and it is going to link Don Bosco Junction in Borivali West to the Malad Waste Water Treatment Facility, and the Oshiwara Bus Depot to the Malad Pumping Station.
As the scheduled quantity of recycle by these treatment plants is 2,464 million litres of sewage per day, they will significantly reduce water pollution and improve the quality of Mumbai’s Mithi and Oshiwara rivers.
