More
    HomeHomeDelhi Metro achieves major milestone: Tunnel completed on golden line. Know more

    Delhi Metro achieves major milestone: Tunnel completed on golden line. Know more

    Published on

    spot_img


    The Delhi Metro Rail Corporation (DMRC) has marked another landmark moment in its ongoing Phase 4 project. A major underground tunnelling achievement was celebrated today as the Tunnel Boring Machine (TBM) broke through at the Tughlakabad Railway Colony site. This forms a crucial part of the upcoming Aerocity–Tughlakabad corridor, which is expected to boost connectivity across South Delhi and beyond.

    The breakthrough occurred after the TBM completed boring a 0.792-kilometre-long tunnel between Tughlakabad and Tughlakabad Railway Colony. Senior officials, including Sh. Naveen Gulati, Member (Infrastructure) of the Railway Board, was present for the event. The civil contractor for this project, M/s Afcons Infrastructure Ltd., executed the tunnelling using a 91-metre-long TBM.

    The corridor is being developed with two parallel circular tunnels to accommodate both up and down metro movements. This design ensures smoother operations and efficiency in future metro services along the line.

    ADVANCED TECHNOLOGY AND SAFETY IN TUNNEL CONSTRUCTION

    The tunnel was constructed at an average depth of 18 meters using the Earth Pressure Balancing Method (EPBM), a cutting-edge technology that ensures stability and safety in variable soil conditions. Over 559 tunnel rings, each with an inner diameter of 5.8 meters, have been installed. These precast concrete rings were manufactured at a fully mechanised casting yard in Mundka and steam-cured to gain rapid strength.

    NO DISRUPTION TO SURFACE STRUCTURES

    To avoid damage to above-ground buildings, ground movements during tunnelling were closely monitored using high-precision instruments. This approach ensured zero settlement and structural safety across the densely built-up Tughlakabad area.

    PHASE 4 TO SEE OVER 40 KM OF UNDERGROUND CONSTRUCTION

    As part of the ongoing Phase 4 expansion, DMRC is constructing 40.109 kilometres of underground tracks. The Aerocity–Tughlakabad corridor alone includes 19.343 kilometres of these underground tunnels, which will significantly reduce travel times once operational.

    TBMS: THE HEART OF MODERN URBAN TUNNELLING

    Tunnel Boring Machines (TBMs) have transformed the tunnelling landscape worldwide. These giant machines can bore through various soil types and rock formations, making them ideal for underground projects in congested cities. Delhi Metro has relied on TBMs since Phase 1 and ramped up their usage in Phase 3, where about 30 TBMs were deployed to construct nearly 50 kilometres of tunnels.

    This successful tunnelling milestone not only underscores DMRC’s technical capabilities but also brings the city one step closer to enhanced mobility. With safety, precision, and sustainability at its core, the Delhi Metro continues to push boundaries and set benchmarks in urban infrastructure.

    – Ends

    Published By:

    Chaitanya Dhawan

    Published On:

    Jul 29, 2025



    Source link

    Latest articles

    राहुल-प्रियंका के सवाल… PM मोदी के जवाब, ऑपरेशन सिंदूर पर लोकसभा में 16 घंटे वार-पलटवार

    संसद के मानसून सत्र के छठे दिन दोनों सदनों में ऑपरेशन सिंदूर और...

    ‘Love Island USA’s JaNa Says Real Reason Behind Kenny Split Is ‘Disgusting’

    JaNa Craig is finally speaking out. The Love Island USA Season 6 star...

    Parliament Monsoon session: Priyanka, Akhilesh & Kanimozhi target government over Pahalgam attack | India News – Times of India

    NEW DELHI: Charges of lack of "govt accountability" for repeated terror...

    More like this

    राहुल-प्रियंका के सवाल… PM मोदी के जवाब, ऑपरेशन सिंदूर पर लोकसभा में 16 घंटे वार-पलटवार

    संसद के मानसून सत्र के छठे दिन दोनों सदनों में ऑपरेशन सिंदूर और...

    ‘Love Island USA’s JaNa Says Real Reason Behind Kenny Split Is ‘Disgusting’

    JaNa Craig is finally speaking out. The Love Island USA Season 6 star...