Kolkata underwater metro: The greatest problem within the underwater metro was water proofing. Actually this tunnel has been constructed 26 meters under the river. In such a scenario, to start with it was essential to ensure that not a drop of water goes into the tunnel. Special preparations have been made for this.
PM Modi on Tuesday Kochi Water Metro inaugurated. This is from Kerala Thiruvananthapuram Will join 10 islands collectively. It is the primary metropolis in India the place water metro has begun. Now the nation goes to go one step additional and turn out to be a type of international locations on the planet the place underwater metro runs.
This will likely be attainable in Kolkata, the capital of West Bengal, the place the metro will run 26 meters under the Hooghly river. Recently its trial has been accomplished. It is believed that this service will likely be began in December this yr. Let us know the way the nation’s first underwater tunnel was ready and what number of difficulties got here in it.
Success after 13 years
The underwater metro will run on the East-West hall of Kolkata. For this, contracts had been signed with completely different corporations in 2009. Work began in 2010. The greatest problem on this hall was to construct a 520-metre underwater tunnel within the Hooghly River close to the Howrah Bridge. Which took 13 years to finish. Now 8 stations have been constructed right here from Phase-1 to Salt Lake and Sealdah.
Also learn: Kerala will get the reward of Kochi Water Tunnel
Tunnel can stand up to earthquake, if water leaks then it will likely be identified instantly
The greatest problem within the underwater metro was water proofing. Actually this tunnel has been constructed 26 meters under the river. In such a scenario, to start with it was essential to ensure that not a drop of water goes into the tunnel. Tunnel maker Afcons did this work with the Russian firm Transtunneltroy. According to firm officers, it has been designed in such a method that if any water enters the tunnel, its gaskets will open. This tunnel also can bear earthquake.
Metro will cross the nation’s deepest tunnel in a minute
The East West Metro hall is a complete of 16.6 km lengthy, right here the metro will run at a pace of 80 km per hour, so it’ll take lower than a minute for the metro to cross this 520 meter lengthy tunnel. There will likely be a complete of 12 stations on this hall, half of those stations will likely be underground. This tunnel would be the deepest tunnel within the nation which is 30 meters under the bottom.
Train travels underwater!🇮🇳 👏
Trial run of prepare via one other engineering marvel; metro rail tunnel and station underneath Hooghly river. pic.twitter.com/T6ADx2iCao
— Ashwini Vaishnaw (@AshwiniVaishnaw) April 14, 2023
The digging went on repeatedly for 67 days
For this tunnel constructed underneath the Hooghly river of Kolkata, the work of simply digging went on repeatedly for 67 days. According to the engineers, the digging of the tunnel began in 2017 and continued for 67 days. This work needed to be accomplished repeatedly as a result of the concern of leakage and subsidence was fixed. In such a scenario, the work couldn’t be stopped even for a single day.
India included in chosen international locations of the world
With the working of metro on this 520 meter tunnel constructed 26 meters under the Hooghly river in Kolkata, India has joined the choose few international locations on the planet the place underwater metro is working. Till now Paris, London, New York, Shanghai and Cairo are the one cities the place metro runs underneath water. Now the title of Kolkata has additionally been added to the checklist of those cities.
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