Afcons Infrastructure Ltd. is preparing to start digging India’s first regional rapid transit system project after delivery of three new Terratec 7.51m diameter EPBMs that will complete the tunneling works for Lot 8 – the downward ramp from Brahampuri to the upward ramp section of Begumpul – of the Delhi-Meerut Regional Rapid Transit System Project.
Package 8 consists of a 7.12 km tunnel and three underground stations.
After successful factory acceptance tests at TERRATEC’s facilities, the tunnel boring machines will now be transported to India and reassembled on site.
In early 2022, the first two machines will be launched from Bhaisali station where they will pass under densely residential areas and commercial buildings. Then, the third tunnel boring machine will cross a far right radius in the direction of Begampul station. The geological conditions along the tunnel routes will be sand, silt and clay.
For the expected geological conditions, the contractor selected three 7.51 m diameter EPBMs equipped with dome-type cutting heads. For added versatility, the cutting head has been designed to allow the cutting tools to be exchangeable for 17 ” disc cutters, allowing the TBM to drill through D-walls and deal with the presence of everything. unexpected obstacle in its path, such as old wells or foundations.
As the tunnel boring machines progress, they will install prefabricated reinforced concrete liner rings 300mm thick x 1500mm long, universal style, including six segments + key. The evacuation of the spoil, the transport of the segments and the logistical supply will be done via rolling stock using five number 45t battery locomotives (also provided by TERRATEC).
The regional rapid transit system is different from the metro in that it caters to passengers looking to travel a longer distance with fewer stops and at higher speeds.
The Delhi-Meerut Regional Rapid Transit System (Delhi-Meerut RRTS) is an 82.15 km long semi-high speed rail corridor under construction connecting Delhi, Ghaziabad and Meerut. With a top speed of 180 km / h, the distance between Delhi and Meerut will be covered in less than 60 minutes. The operation of the Delhi-Ghaziabad-Meerut RRTS corridor is expected to increase the modal split in favor of public transport from 37% to 63% in the region, which will ultimately help reduce pollution. The entire RRTS Delhi-Ghaziabad-Meerut corridor, 82 km long, is expected to be operational by 2025.