The Delhi Metro Rail Corporation in New Delhi, India, announced March 8 that it has deployed as many as 19 tunnel boring machines simultaneously for constructing micro tunnels across the length of the national capital.
The project is becoming one of the largest ever undertaken below any major urban center globally. Delhi Metro is constructing more than 33 miles of underground metro lines comprising of 74 different tunneling drives.
About 35 tunnel boring machines are being used for the project during the entire third phase. The third phase is expected to be completed by the end of 2015.
Bertha Could Start Digging Again in August
Bertha, the large tunneling machine that broke down in Seattle, could start tunneling again in August if repairs proceed as Seattle Tunnel Partners hope.
Seattle Tunnel Partners plan to raise the 2,000-ton cutter head to the surface in late March to replace the damaged seals in May.
The machine is digging a 1.7-mile highway tunnel under Seattle to replace the Alaskan Way Viaduct.
Seattle Tunnel Partners says if the machine is repaired and works as planned, tunneling activity would accelerate as the 57-foot diameter machine digs deeper underground. At its deepest, it will be 200-feet underground.
The machine stopped working in December 2013 after a bearing overheated. The problem was failure of the machine’s seal system to keep dirt out of the bearings.
Pegasus Utility's Wells Named Professional Woman of the Year
The National Association of Professional Women honored Melanie Wells as a 2015 Professional Woman of the Year.
Wells is director of business affairs and CFO at Pegasus Utility Locating Services in Phoenix, Arizona. The firm locates utilities for construction companies, hospitals and municipalities. She is responsible for overseeing all of the company’s financial transactions, including accounts receivable, accounts payable, loans and budget forecasting.
Wells is also involved in the company’s current expansion into international markets.
Editor’s note: Pegasus Utility Locating Services will be featured in the May/June issue of Dig Different.
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