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What is Advanced NATM Tunnel Gantry Techniques about?

Tunnel linings constructed using the New Austrian Tunnelling Method (NATM) rely heavily on gantry-mounted formwork systems to achieve accurate geometry, safe access, and efficient concrete placement in highly variable ground conditions. Unlike mechanized methods such as TBM, NATM involves sequential excavation, evolving ground profiles, and continuous adjustments to temporary support-factors that make gantry behaviour far more sensitive to alignment, stability, and operational errors.

Author

International Journal of Innovative Science and Research Technology

Language

EN