The Delhi Metro Rail Corporation (DMRC) has successfully completed a challenging tunneling task as part of its Phase IV expansion.

The task involved constructing a tunnel beneath the operational Red Line at Pulbangash without halting train services. The tunnel, part of the Janakpuri West-RK Ashram Marg extension of the Magenta Line, connects the Pulbangash and Sadar Bazar stretches. Despite the delicate nature of the task, with the Red Line running above the site on open foundations, DMRC ensured safety through rigorous measures, including the TAM grouting technique and real-time monitoring of ground movement.

Engineers also implemented a detailed ground-strengthening plan, stabilising the area around the viaduct pier to prevent settlement during tunnelling.

The successful operation, which impacted approx. seven lakh passengers daily, demonstrates DMRC's ability to execute complex infrastructure projects with minimal disruption.