Mumbai-Ahmedabad High-Speed Rail (MAHSR) Corridor: In a significant development, the first Reinforced Concrete (RC) track bed for the Mumbai-Ahmedabad High-Speed Rail (MAHSR) corridor has been laid. This project represents the debut of the J-slab ballastless track system in India, drawing inspiration from the renowned Japanese Shinkansen.
“The advanced track system consists of precast track sections that support fastening devices and rails. The track system is painstakingly constructed in-situ for both the UP and DOWN track lines on viaduct tops, with a width of 2420mm, according to an official. The track system rests on a 300mm thick RC track bed.
Mumbai-Ahmedabad High-Speed Rail (MAHSR) Corridor: IRC tethers
Notable are the approximately 5m-apart RC anchors strategically placed to eliminate longitudinal and lateral restraints on the track surface. With a diameter of 520mm and a height of 260mm, these RC anchors are essential for maintaining precise alignment for train operations at speeds of up to 320 kilometres per hour.
“As a result of the awarding of contracts for trackwork throughout the Gujarat section, the project is advancing significantly. More than 14,000 metric tonnes (MT) of JIS rails and 50 moulds for casting track slabs have already been delivered from Japan, according to officials.
According to the National High Speed Rail Corporation, factories endowed with cutting-edge technology and infrastructure have been established to produce track slabs. These cutting-edge facilities, supported by specialised construction equipment such as rail feeder cars, slab laying cars, and CAM (Cement Asphalt Mortar) laying cars, demonstrate the dedication to precision in HSR track construction.
Highest quality and safety criteria
“To ensure seamless execution, comprehensive training and certification is being organised in collaboration with Japan Railway Technical Services (JARTS) for Indian contracting firm personnel. This initiative seeks to establish a comprehensive comprehension of the track laying methodology and maintain the highest quality and safety standards, according to an official.
“As the MAHSR corridor advances steadily, the commencement of track works paves the way for a revolutionary leap in India’s high-speed rail infrastructure, bringing the country closer to a future of efficient and advanced connectivity,” he said.