HCC completes first tunnel for Mumbai Metro-III project
01 Sep 2019
2 Min Read
Editorial Team
Hindustan Construction Company (HCC) emerged as the sole contractor among all packages to finish the entire length of a tunnel after it completed the south bound tunnel between CST and Mumbai Central stations.聽
As communicated by the company, the construction team built the 3.82-km tunnel in tough geological and urban conditions. These included the proximity of the project to the sea; the fact that the land to be tunnelled through was heterogeneous reclaimed area; congested working areas; and the need to leave buildings (most over 100 years old) undisturbed while tunnelling directly below them.聽
MMRCL had awarded the contract to HCC in July 2016, for the design and construction of twin tunnels by tunnel-boring machine (TBM) method and the construction of four underground metro stations, including one at CST.
Two TBMs were procured from China with 117-m-long, single-shield, dual-mode hard rock with a 6.68 m diameter and weighing around 848 mt. They are equipped to operate in both open and closed mode, in the predominantly fresh and slightly to moderately weathered basalt and breccia anticipated in the Mumbai Metro project. After months of geotechnical investigations, planning and a lengthy procurement phase, the HCC team launched Vaitarna I (the first TBM) from the project site at CST on December 04, 2017. This TBM requires around 32 people to operate, which includes operators, engineers and labourers.
As the alignment of the tunnel passes through one of Mumbai鈥檚 most thickly populated residential areas, a thorough geological survey was conducted along the entire stretch of the project. Prior to tunnelling, a structural survey was carried out across a 30-m influence zone on either side of the alignment to assess the impact of tunnelling on the buildings.聽
The construction of station buildings is currently underway. While all the station buildings are unique in design, the CST station is a completely cut-and-cover station; the remaining three stations will be made by NATM method. Vaitarna II was launched in February 2018 and is expected to complete its tunnelling by December 2019.
Hindustan Construction Company (HCC) emerged as the sole contractor among all packages to finish the entire length of a tunnel after it completed the south bound tunnel between CST and Mumbai Central stations.聽As communicated by the company, the construction team built the 3.82-km tunnel in tough geological and urban conditions. These included the proximity of the project to the sea; the fact that the land to be tunnelled through was heterogeneous reclaimed area; congested working areas; and the need to leave buildings (most over 100 years old) undisturbed while tunnelling directly below them.聽MMRCL had awarded the contract to HCC in July 2016, for the design and construction of twin tunnels by tunnel-boring machine (TBM) method and the construction of four underground metro stations, including one at CST.Two TBMs were procured from China with 117-m-long, single-shield, dual-mode hard rock with a 6.68 m diameter and weighing around 848 mt. They are equipped to operate in both open and closed mode, in the predominantly fresh and slightly to moderately weathered basalt and breccia anticipated in the Mumbai Metro project. After months of geotechnical investigations, planning and a lengthy procurement phase, the HCC team launched Vaitarna I (the first TBM) from the project site at CST on December 04, 2017. This TBM requires around 32 people to operate, which includes operators, engineers and labourers.As the alignment of the tunnel passes through one of Mumbai鈥檚 most thickly populated residential areas, a thorough geological survey was conducted along the entire stretch of the project. Prior to tunnelling, a structural survey was carried out across a 30-m influence zone on either side of the alignment to assess the impact of tunnelling on the buildings.聽The construction of station buildings is currently underway. While all the station buildings are unique in design, the CST station is a completely cut-and-cover station; the remaining three stations will be made by NATM method. Vaitarna II was launched in February 2018 and is expected to complete its tunnelling by December 2019.
Next Story
Reliance, Diehl Advance Pact for Precision-Guided Munitions
Diehl Defence CEO Helmut Rauch and Reliance Group鈥檚 Founder Chairman Anil D. Ambani have held discussions to advance their ongoing strategic partnership focused on Guided and Terminally Guided Munitions (TGM), under a cooperation agreement originally signed in 2019.This collaboration underscores Diehl Defence鈥檚 long-term commitment to the Indian market and its support for the Indian Government鈥檚 Make in India initiative. The partnership鈥檚 current emphasis is on the urgent supply of the Vulcano 155mm Precision Guided Munition system to the Indian Armed Forces.Simultaneously, the 鈥淰ulc..
Next Story
Modis Navnirman to Migrate to Main Board, Merge Subsidiary
Modis Navnirman Limited has announced that its Board of Directors has approved a key strategic initiative involving migration from the BSE SME platform to the Main Board of both BSE and NSE, alongside a merger with its wholly owned subsidiary, Shree Modis Navnirman Private Limited.The move to the main boards marks a major milestone in the company鈥檚 growth trajectory, reflecting its consistent financial performance, robust corporate governance, and long-term commitment to value creation. This transition will grant the company access to a broader investor base, improve market participation, en..
Next Story
Global Capital Flows Remain Subdued, EMEA Leads in Q1 2025
The Bharat InvITs Association鈥檚 industry update for Q1 2025 shows subdued global capital flows, with investment volumes remaining at the lower end of the five-year range despite a late 2024 recovery. According to data from Colliers and MSCI Real Capital Analytics, activity in North America declined slightly, while EMEA maintained steady levels and emerged as the top region for investment in standing assets.The EMEA region now hosts seven of the top ten cross-border capital destinations for standing assets, pushing the United States鈥� share of global activity below 15 per cent. Meanwhile, in..
