New Delhi, India (Urban Transport News): Delhi Metro Rail Corporation (DMRC) on 21st September 2020 issued a tender notice for the construction of the last leg of the Dwarka-Najafgarh Underground Metro Corridor of Phase-III of the Delhi Metro Rail project.
The 289.65 km section is part of 1.218 km long stretch of Najafgarh-Dhansa Bus Stand which is also part of the 4.295 km Line-9 (Grey Line) of Delhi Metro. This portion was pending due to a sudden collapse that happened during tunneling work being carried out by the team of Shanghai Tunnel Engineering Co. Ltd. – SUCG Infrastructure India Pvt Ltd (STEC – SUCG IN JV). However, the contractor had successfully made two tunnel breakthrough on 18th January 2019 and 26th June 2019 by using a single Tunnel Boring Machine (TBM).
Scope of Work
Contract Package CC-126A: Construction of Cut and Cover tunnel box from Chainage 5050.35 (UP Line) to 5340.00 (UP line) for extension of Dwarka Najafgarh Metro Corridor of Delhi Metro Rail Project Phase-III.
The work includes the construction of cut and cover tunnel box, Installation of Micro piling, stabilization of soil by injecting cement grout in the space between the building line and soldier pile, excavation in confined space for tunnel construction, re-excavation of the backfilled area by previous agency, fabrication and erection of temporary structural supporting arrangement, monitoring of adjacent buildings, waterproofing of Tunnel box, backfilling, road restoration, diversion/protection of utilities etc. The construction of cut and cover tunnel box has to be done in close vicinity of shops and residential complexes, therefore special care to be taken during execution. The design of permanent and temporary works for civil construction shall be provided by DMRC.
Sr. General Manager (Contract), Delhi Metro Rail Corporation, 5th floor, A-Wing, Metro Bhawan, Fire Brigade Lane, Barakhamba Road, New Delhi -110001
The 4.295 km long Line-9 (Gray Line) of Delhi Metro Rail Network connects Dwarka to the Najafgarh area through 3 stations.
For more information about the project, please explore the Delhi Metro page of Urban Transport News.