Undersea tunnel for Mumbai-Ahmedabad bullet train corridor
RAILWAYS & METRO RAIL

Undersea tunnel for Mumbai-Ahmedabad bullet train corridor

During the pre-bidding stage for the construction of the undersea tunnel for the ambitious Mumbai Ahmedabad High Speed Rail (MAHSR), at least seven Indian companies have expressed their interest for the works, said officials.

The National High Speed Rail Corporation Limited (NHSRCL) told media sources that seven Indian companies had participated in the pre-bid meeting for constructing the undersea tunnel of the corridor. NSHRCL also said that the tender for the construction of the tunnel has been floated and bids are invited till 19 February 2021.

The bullet train project will have a 21 km long underground corridor from Bandra Kurla Complex (BKC) to Kalyan Shilphata in Maharashtra.

NSHRCL said that about 7 km of this underground corridor is under the Thane creek. Out of this, a 1.8 km stretch will be developed under the sea bed, while the remaining part of the section is to be built under the mangroves marshland on either side of the creek.

The tender has been floated for tunnel development, which includes testing and commissioning for the double-line high-speed railway for the project using a tunnel boring machine (TBM) and a New Austrian Tunnelling Method (NATM).


4th Indian Cement Review Conference 2021

17-18 March 

Click for event info

A geotechnical investigation of the undersea tunnel area was carried out earlier by a team of engineers from Japan's Kawasaki Geological Engineering firm, NHSRCL, and Rail India Technical and Economic Service Ltd (RITES).

In order to study the sea bed structure, a static refraction technique (SRT) survey was carried out by the team, involving firing a high energy sound wave towards the seabed from beneath the water surface as well as mapping the refracted sound wave to determine the density of the rock under the sea bed.

Also read: Mumbai-Ahmedabad bullet train gets environmental clearance

Image Source

During the pre-bidding stage for the construction of the undersea tunnel for the ambitious Mumbai Ahmedabad High Speed Rail (MAHSR), at least seven Indian companies have expressed their interest for the works, said officials. The National High Speed Rail Corporation Limited (NHSRCL) told media sources that seven Indian companies had participated in the pre-bid meeting for constructing the undersea tunnel of the corridor. NSHRCL also said that the tender for the construction of the tunnel has been floated and bids are invited till 19 February 2021. The bullet train project will have a 21 km long underground corridor from Bandra Kurla Complex (BKC) to Kalyan Shilphata in Maharashtra. NSHRCL said that about 7 km of this underground corridor is under the Thane creek. Out of this, a 1.8 km stretch will be developed under the sea bed, while the remaining part of the section is to be built under the mangroves marshland on either side of the creek. The tender has been floated for tunnel development, which includes testing and commissioning for the double-line high-speed railway for the project using a tunnel boring machine (TBM) and a New Austrian Tunnelling Method (NATM).4th Indian Cement Review Conference 202117-18 March Click for event info A geotechnical investigation of the undersea tunnel area was carried out earlier by a team of engineers from Japan's Kawasaki Geological Engineering firm, NHSRCL, and Rail India Technical and Economic Service Ltd (RITES). In order to study the sea bed structure, a static refraction technique (SRT) survey was carried out by the team, involving firing a high energy sound wave towards the seabed from beneath the water surface as well as mapping the refracted sound wave to determine the density of the rock under the sea bed. Also read: Mumbai-Ahmedabad bullet train gets environmental clearanceImage Source

Next Story
Equipment

Handling concrete better

Efficiently handling the transportation and placement of concrete is essential to help maintain the quality of construction, meet project timelines by minimising downtimes, and reduce costs – by 5 to 15 per cent, according to Sandeep Jain, Director, Arkade Developers. CW explores what the efficient handling of concrete entails.Select wellFirst, a word on choosing the right equipment, such as a mixer with a capacity aligned to the volume required onsite, from Vaibhav Kulkarni, Concrete Expert. “An overly large mixer will increase the idle time (and cost), while one that ..

Next Story
Real Estate

Elevated floors!

Raised access flooring, also called false flooring, is a less common interiors feature than false ceilings, but it has as many uses – if not more.A raised floor is a modular panel installed above the structural floor. The space beneath the raised flooring is typically used to accommodate utilities such as electrical cables, plumbing and HVAC systems. And so, raised flooring is usually associated with buildings with heavy cabling and precise air distribution needs, such as data centres.That said, CW interacted with designers and architects and discovered that false flooring can come in handy ..

Next Story
Infrastructure Urban

The Variation Challenge

A variation or change in scope clause is defined in construction contracts to take care of situations arising from change in the defined scope of work. Such changes may arise due to factors such as additions or deletions in the scope of work, modifications in the type, grade or specifications of materials, alterations in specifications or drawings, and acts or omissions of other contractors. Further, ineffective planning, inadequate investigations or surveys and requests from the employer or those within the project’s area of influence can contribute to changes in the scope of work. Ext..

Advertisement

Advertisement

Subscribe to Our Newsletter

Get daily newsletters around different themes from Construction world.

STAY CONNECTED

Advertisement

Advertisement

Advertisement

Advertisement

Talk to us?