Oct 02, 2017
First of Two Mixed Ground Machines will begin boring this autumn
The on-time delivery of the first machine is just the beginning of partnership that will span years. “There are few companies in the international arena that are as professional as Robbins. Robbins has been very helpful to DSJV since the inception of the project and will be our partners until the end of the contract. Robbins’ presence in India including field service crews will be a great help for us in future,” said Mr. DV Raju, Senior Vice President for SOMA.
The two machines will excavate parallel 3.5 km (2.2 mi) long tunnels between Mumbai Central and Worli station sites, passing through three intermediate cut and cover stations on the way. Ground conditions consist of fresh to weathered basalt and breccia up to 100 MPa UCS with water pressures up to 3 bar.
The JV selected Slurry machines for their contract due to the challenging ground conditions expected. “I have worked with Slurry TBMs on similar geology globally. Slurry TBMs have real power and will suit the hard rock geology of our Mumbai Metro contract 3. The water table and variable geology, especially basalt of higher hardness, can be easily tackled by Slurry TBMs,” said Mr. Tamay Sayin, Project Manager for DSJV. The cutterheads of the machines are fitted with wear protection, wear detection bits, and Robbins 17-inch disc cutters for the conditions. Grizzly bars will limit the size of boulders that can enter the cutterhead to 250 mm (9.8 in). The slurry systems includes rock crushers as well as abrasion-resistant plating in high-wear areas.
The 33.5 km (20.8 mi) long Line 3 of Mumbai Metro being constructed by the Mumbai Metro Rail Corporation (MMRC) will consist of 26 underground stations and one at-grade station that will reduce heavy traffic and rail congestion between Bandra and Churchgate areas of the city. A total of 17 TBMs are being procured to bore various sections of the tunnels, which will be excavated at average depths of 15 to 25 m below the city. The entire line is expected to be operational by 2021.
Oct 18, 2017
This free poster serves as a handy visual reference for sewer rehab professionals.
Oct 16, 2017
The North American Society for Trenchless Technology (NASTT) - the leading association serving and promoting the North American trenchless industry - is bringing its annual No-Dig Show to the sun and beauty of southern California in 2018. The trenchless community ...
Oct 13, 2017
The Full Phase 1 of the Project is Estimated to be in Service by the End of the Year
Oct 12, 2017
This free poster illustrates how to protect yourself from wastewater biohazards.
Oct 11, 2017
Jeschke Umwelttechnik GmbH installs 50,000th Alphaliner
Oct 10, 2017
British Water’s Data & Analytics Focus Group is calling on professionals from the water and utilities sector to contribute case studies and unsolved challenges. A searchable, universally accessible digital library is being created by the group to share examples of ...
Oct 09, 2017
Department of Energy grant focuses on creating renewable fuels at wastewater treatment plants
Oct 06, 2017
Lightweight and compact, the MiniFlex plumbing camera is designed for navigating multiple bends in pipes from 1.25’’ and up. Features include a small camera head (0.76’’ in diameter) with 512 Hz sonde, a digital recorder and footage counter.
Oct 05, 2017
Compact plant offers considerable benefits over activated sludge treatment / Site design enhances landscape and visual aspect / Civil engineering minimised at challenging site
Oct 04, 2017
Organizers of the 5th China International Plastic Pipe Conference have announced a top international line-up of speakers for their event. Hosted jointly by CPPA (China Plastics Piping Association) and PPCA, the conference and exhibition will take place in Hangzhou on ...
Sep 29, 2017
A recent acquisition makes Thompson Pipe Group one of the largest and most diversified water, drainage and sanitary pipe resources in North America.
Sep 28, 2017
Industry Leaders Recognize Benefits of Innovative Technology as Part of KC’s Smart City Initiative