CHENNAI (Metro Rail News): ITD Cementation India Ltd. started pouring concrete on 5th December to cast their first tunnel ring segment to construct Chennai Metro Line-4,10 km underground portion between the Power House Ramp and Light House Station.
The yard in Muthukadu along ECR road will be used to cast almost 9000 tunnel ring segments. To construct the 5.15 km Package UG-01 (Bharathidasan Route Station to Light House) and 4.877 km Package UG-02 (Kodambakkam Flyover Station to Bharathidasan Road Station) of the 118.9 km Chennai Metro Phase 2 project.
In January 2022, Chennai Metro Rail Ltd (CMRL) awarded ITD both packages of civil contracts totalling Rs. 3743.24 crores with a 48-month timeline.
The inside diameter of the twin tunnels for the Chennai Metro will be 5.6 metres. On UG-1, the first section cast on 5th December will be used.
ITD intends to use four tunnel boring machines (TBMs). Three of those would be renovated as part of the UGC-04 Package for Mumbai Metro Line-3 (Herrenknecht S1073, S1074 and S1075). A new TBM will also be purchased from Herrenknecht, and all four of them will undergo factory acceptance testing at the company’s Tamil Nadu plant in the upcoming months.
