.
“The under-river tunnel is 13 metres beneath the riverbed and 37 metres (more than 120ft) below the ground surface. There was a chance of running into things like lost anchors or ship wreckage. To avoid surprises, we did four boreholes in the river to study the soil. Fortunately, there were no surprises,” said S Paramasivan, MD of Afcons, the firm that has constructed the under-river section of the Metro line.
The Green Line operates a 9.2km service between Sector V in east Kolkata and Sealdah railway station.
Kolkata Metro Rail Corporation is implementing Rs 10,000-crore project.
“The under-river tunnel is 13 metres beneath the riverbed and 37 metres (more than 120ft) below the ground surface. There was a chance of running into things like lost anchors or ship wreckage. To avoid surprises, we did four boreholes in the river to study the soil. Fortunately, there were no surprises,” said S Paramasivan, MD of Afcons, the firm that has constructed the under-river section of the Metro line.
The Green Line operates a 9.2km service between Sector V in east Kolkata and Sealdah railway station.
Kolkata Metro Rail Corporation is implementing Rs 10,000-crore project.