Bhavika Jain, Manthan Mehta: Below the glistening waters of Thane Creek, an incredible engineering marvel is quickly going to be constructed. Work on India’s first undersea tunnel has now entered a decisive part. It is a 7 km stretch of the Mumbai-Ahmedabad bullet practice hall. It’s anticipated that the biggest tunnel boring machine (TBM) for this undertaking can be began by the tip of the yr. The size of your entire underground tunnel is 21 km. There are distinctive challenges in engaged on this 7 km undersea tunnel stretch. These embody digging below advanced geological layers and ecologically delicate water. As of now, the Kolkata Metro has the nation’s first underwater practice tunnel passing below the Hooghly River, adopted by Mumbai Metro Rail Company’s Line 3, which works below the Mithi River connecting Bandra Kurla Advanced and Dharavi stations.
How the tunnel is being constructed
The upcoming undersea tunnel, nevertheless, can be completely different from the tunnels constructed below rivers. The 21-km-long tunnel can be a single tube for 2 above and under floor tracks. To construct it, TBMs with a cutter head of 13.6 metres diameter can be used. Often, a cutter head of 6-8 metres diameter is used for city tunnels utilized in MRTS [metro systems] as these tunnels accommodate just one monitor, says a senior official of the Nationwide Excessive Pace ​​Rail Company Ltd, which is engaged on the undertaking.
The tempo of labor on the Rs 1.08 lakh crore bullet practice undertaking is way quicker in Gujarat than in Maharashtra. Of the full 502-km distance, the 352-km route by Gujarat is anticipated to develop into operational in 2027 after the opening of the 50-km part between Surat and Bilimora in August 2026. The complete hall is anticipated to be prepared until Mumbai by the tip of 2028, six years forward of its unique deadline.
The tempo of labor on the Rs 1.08 lakh crore bullet practice undertaking is way quicker in Gujarat than in Maharashtra. Out of the full distance of 502 km, the 352 km route by Gujarat is anticipated to develop into operational in 2027 after the opening of the 50 km part between Surat and Bilimora in August 2026. The complete hall is anticipated to be prepared until Mumbai by the tip of 2028, six years forward of its unique deadline.