May, 14 : J. Kumar Infraprojects Ltd. (JKIL) today announced the successful breakthrough of Tunnel Boring Machine at Mahipalpur, marking a critical progress milestone on Contract DC-08 awarded by Delhi Metro Rail Corporation (DMRC).
The breakthrough forms part of a technically complex underground package covering the design and construction of twin tunnels, a crossover box, and four underground stations along the Aerocity to Tughlakabad corridor of DMRC Phase-IV, one of the most significant urban metro expansions currently underway in India.
The TBM drive was executed under sustained adverse ground conditions: hard strata interspersed with unexpected boulders, micaceous zones, and continuous water ingress throughout the alignment. The most significant challenge was a stretch of nearly 300 metres beneath multiple interconnected ponds, creating persistent hydrostatic pressure and highly sensitive surface conditions that required continuous monitoring and real-time geotechnical intervention.
The breakthrough at the diaphragm wall at Mahipalpur was achieved without compromise to safety or structural integrity; a result of disciplined engineering execution and coordinated on-ground effort sustained across the full duration of the drive.
Dr. Nalin Gupta, Managing Director, J. Kumar Infraprojects Ltd. said:
“The TBM drive at Mahipalpur tested us in ways that few projects do. The geotechnical conditions were among the most demanding we have worked through, but the team never lost focus. What broke through that D-wall was not just a machine. It was months of precision, persistence, and collective resolve. This is what JKIL is built on.”
The Mahipalpur breakthrough adds to JKIL’s expanding record of complex underground works under DMRC. The company currently operates seven TBM machines across active project sites and has established itself as one of DMRC’s most prominent contractors by order book.