Travel Tip
 Conf TL
 RF Club
 FM Alert
 FM Approval
Forum Super Search
Freq Contact:
Posting Date From:
Posting Date To:
Blog Category:
Train Type:
ONLY with Pic/Vid:
Sort by: Date:     Word Count:     Popularity:     
Public:    Pvt: Monitor:    RailFan Club:    

Full Site Search
  Full Site Search  
Sun Nov 18 18:21:23 IST
PostPost Trn TipPost Stn TipAdvanced Search

Blog Entry# 3478649
Posted: Jun 02 (01:32)

No Responses Yet
Rail News
Jun 02 (01:31)   India's first underwater metro tunnel to carry passengers across Hooghly in 60 seconds - Report

Jayashree ❖ Amita*^   41467 news posts
Entry# 3478649   News Entry# 339159         Tags   Past Edits
IBT reported that the Kolkata metro has almost completed the construction of what will be India's first and so far only under-river tunnel carrying a metro line. The tunnel will be a part of the city's East-West metro Corridor. The line will cross the Hooghly river and connect Howrah Maidan and a new stop – the proposed Mahakaran metro station near Writers Building.
Tunnelling work on the project was started in April last year from the Howrah side of the river, reports NDTV. The 520m-long tunnel will be buried under the river's basin at nearly 30m from the surface and 13m below the riverbed. Once complete, the ride aboard a metro train will only take 60 seconds to cross, that means the
train will be travelling just over 31 kmh.
To build the tunnels required for this project, the Kolkata Metro has reportedly brought in two Tunnel Boring Machines (TBM) from Germany and assembled in on site. They have been named 'Rachna' and 'Prerna', notes the report after the two daughters of a project officer who tragically died in a road accident.
The boring work has been completed, reported the Hindu earlier this year and Prerna was the first to break through the surface and come out, seeing light for the first time since it was lowered into the ground in April 2016.
As for the safety of the project, the report notes that the company contracted to build these tunnels have reportedly used special concrete with gaskets linking each section and lining the tunnel. These gaskets are designed to keep the tunnel sealed by expanding when they come in contact with water, according to the report.
Mr Satish Kumar, managing director of the Kolkata Metro Rail Corporation Limited, said that "It is a huge challenge. The soft soil was an issue. Cutting through rock is less complicated. There have been water leakages in projects abroad, which slowed them down. We don't want any leakages."
Source : IBT

ARP (Advanced Reservation Period) Calculator

Reservations Open Today @ 8am for:
Trains with ARP 10 Dep on: Wed Nov 28
Trains with ARP 15 Dep on: Mon Dec 3
Trains with ARP 30 Dep on: Tue Dec 18
Trains with ARP 120 Dep on: Mon Mar 18


Rail News

New Trains

Site Announcements

  • Entry# 4003283
    Nov 14 (11:24AM)

    This is an advance notice of a new feature that will be introduced within the next couple of days. The feature is called "Spottings". . 1. Any time you see a train ANYWHERE - while railfanning, while travelling in a train, while visiting a station, seeing someone off, receiving someone, while your train...
  • Entry# 3710716
    Aug 14 2018 (11:04AM)

    This is regarding the appointment of Monitors. For TLMs, we require a minimum of 1000 Confirmed TLs. For FMs, we require members to promise to abide by the guidelines and be free of controversies. For other Monitors, we require the member to be in good standing. . However, "eligibility" does NOT always mean...
  • Entry# 3645007
    Jul 20 2018 (03:28PM)

    This is an advance notice of an upcoming change: 1. We shall be removing the Login/Forum section from the RailCal app as it is cumbersome, buggy and lacking in features. . 2. We shall soon be introducing a dedicated app called "Rail Messenger" for both Android and iOS, for all blogging/messaging purposes. The app...
  • Entry# 3644431
    Jul 20 2018 (12:42PM)

    The following changes are being made: 1. To restore the fun back to PNR Predictions, PNR Predictions will NOT be hidden anymore. PNR Predictions by members can be seen by ALL, before and after Charting. New members often look towards our expert predictors for hints, and we are reinstanting that. . 2. To better...
  • Entry# 3601043
    Jul 04 2018 (12:36PM)

    @all: While we do nominally allow multiple IDs, these multiple IDs are NOT allowed to engage in misuse and "mischief". Voting multiple times in the same poll using multiple IDs, rating each other IDs' blogs using multiple IDs, etc. are classified as "gross misuse". . This is an advance notice that some of the...
  • Entry# 3555168
    Jun 20 2018 (10:33PM)

    @all: IRI is a PUBLIC information website, like Wikipedia. The voluntarily posted Blogs, Train/Station Tips, Train/Station Pics, Polls, Train TTs, PNRs, etc. comprise the permanent publicly viewable and searchable repository of IRI. A PUBLIC info website is unlike WhatsApp, FaceBook, Instagram, etc. where people post personal pics and other stuff, which CAN...
Scroll to Top
Scroll to Bottom
Go to Mobile site
Important Note: This website NEVER solicits for Money or Donations. Please beware of anyone requesting/demanding money on behalf of IRI. Thanks.
Disclaimer: This website has NO affiliation with the Government-run site of Indian Railways. This site does NOT claim 100% accuracy of fast-changing Rail Information. YOU are responsible for independently confirming the validity of information through other sources.
India Rail Info Privacy Policy