Afcons wraps Mumbai-Ahmedabad Bullet Train's ADIT tunnel
RAILWAYS & METRO RAIL

Afcons wraps Mumbai-Ahmedabad Bullet Train's ADIT tunnel

Afcons Infrastructure announced the completion of tunnelling work for an Additionally Driven Intermediate Tunnel (ADIT) measuring 394 meters long as part of the Mumbai ? Ahmedabad High Speed Rail (MAHSR Bullet Train) project, which spans 508.17 kilometres.

The ADIT tunnel, featuring a 42-meter deep inclined shaft, had been constructed over a period of 6 months on the eastern side of the 20.377-kilometre underground Package C-2 (BKC ? Shilphata). Its primary purpose was to facilitate access for construction workers and vehicles to a point where excavation work for the main-line tunnel could commence using the New Austrian Tunneling Method (NATM). The portal of the ADIT tunnel is situated in Ghansoli, Navi Mumbai (as per Google Maps). From its farthest end, NATM tunneling will proceed in opposite directions ? westward to Sawli?s Shaft-3 for a distance of 1.6 kilometers and eastwards towards Shilphata?s tunnel portal, covering an approximate distance of 1.8 kilometres. The contract for Package C-2, valued at Rs 63.97 billion, was awarded to Afcons Infrastructure by India?s National High Speed Rail Corporation (NHSRCL) in June 2023, with a deadline of 1888 days (equivalent to 5.17 years).

Afcons is tasked with constructing three shafts at BKC Station, Vikhroli, and Sawli, at depths of approximately 36 meters, 56 meters, and 39 metres respectively. These shafts will be utilised to launch and retrieve three Mega Tunnel Boring Machines (TBMs) with a diameter of around 13.1 meters, to bore through approximately 16 kilometres of tunnel.

Afcons Infrastructure announced the completion of tunnelling work for an Additionally Driven Intermediate Tunnel (ADIT) measuring 394 meters long as part of the Mumbai ? Ahmedabad High Speed Rail (MAHSR Bullet Train) project, which spans 508.17 kilometres. The ADIT tunnel, featuring a 42-meter deep inclined shaft, had been constructed over a period of 6 months on the eastern side of the 20.377-kilometre underground Package C-2 (BKC ? Shilphata). Its primary purpose was to facilitate access for construction workers and vehicles to a point where excavation work for the main-line tunnel could commence using the New Austrian Tunneling Method (NATM). The portal of the ADIT tunnel is situated in Ghansoli, Navi Mumbai (as per Google Maps). From its farthest end, NATM tunneling will proceed in opposite directions ? westward to Sawli?s Shaft-3 for a distance of 1.6 kilometers and eastwards towards Shilphata?s tunnel portal, covering an approximate distance of 1.8 kilometres. The contract for Package C-2, valued at Rs 63.97 billion, was awarded to Afcons Infrastructure by India?s National High Speed Rail Corporation (NHSRCL) in June 2023, with a deadline of 1888 days (equivalent to 5.17 years). Afcons is tasked with constructing three shafts at BKC Station, Vikhroli, and Sawli, at depths of approximately 36 meters, 56 meters, and 39 metres respectively. These shafts will be utilised to launch and retrieve three Mega Tunnel Boring Machines (TBMs) with a diameter of around 13.1 meters, to bore through approximately 16 kilometres of tunnel.

Related Stories

Gold Stories

Next Story
Infrastructure Urban

Sabarmati Riverfront Two Plots Up for Auction at Rs2.24 bn Base Price

Two commercial plots on the western bank of the Sabarmati Riverfront will be auctioned with a base price of Rs 112 crore each, equivalent to Rs 1.12 bn apiece and Rs 2.24 billion in total. The parcels are located adjacent to the Metro Rail Bridge in Ahmedabad and form the first commercial offering after a prolonged pause. The Riverfront Development Corporation has framed the sale as part of a phased commercial release to revive development along the riverfront. The combined base valuation has been set by the corporation to reflect market rates along the riverfront. The corporation has fixed a ..

Next Story
Infrastructure Urban

Andhra Pradesh to Connect Over One Million Streetlights

Andhra Pradesh will undertake a statewide smart streetlighting programme across all 123 Urban Local Bodies (ULBs), bringing around 1.05 million (mn) streetlights under an AI enabled monitoring and management system. The programme will be implemented by Energy Efficiency Services Limited (EESL) with the Commissioner and Director of Municipal Administration under the state Municipal Administration and Urban Development Department. The project aims to convert conventional streetlighting into a digitally managed municipal service monitored and maintained remotely. The initial phase will cover abou..

Next Story
Infrastructure Urban

AMC To Procure Four Machines For Guard Rail Cleaning

Ahmedabad Municipal Corporation will introduce four specialised machines for cleaning guard railings along major roads and the central verges of BRTS and Metro corridors. The civic body plans to replace manual labour with mechanised cleaning to improve maintenance of road infrastructure and greenery. The purchase is estimated at Rs 82.8 million (mn), excluding GST. The proposal sets the base price of each machine at about Rs 20.7 million (mn) so four units total Rs 82.8 million (mn) before GST. 18 per cent GST will be applicable separately. During the warranty period each machine will operate ..

Advertisement

Subscribe to Our Newsletter

Get daily newsletters around different themes from Construction world.

STAY CONNECTED

Advertisement