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Tunnelling

Delivering safe, efficient and technically advanced underground infrastructure

Full-scope engineering for tunnel infrastructure

Tunnelling is essential to modern mobility systems, enabling cities and regions to overcome topographical challenges and expand underground space for transport, energy, water and utilities. At Sener, we provide full-scope engineering for tunnel infrastructure — from conceptual design and geotechnical studies to construction management and safety systems integration. Our experience includes tunnels for railways, metros, roads and utility networks, combining innovation, structural precision and a strong focus on operational safety.

We have delivered tunnel infrastructure in high-speed rail, metro systems and highway corridors, including projects in complex urban environments, seismic zones and environmentally sensitive areas. Our portfolio covers Europe, the Americas, Asia, Oceania and Africa.

Why choose us

Tunnels designed for resilience and safety

From shafts and galleries to safety protocols and systems, we reduce risks through simulation, structural optimization and proactive interface management, supported by ACROT, Sener’s tool for advanced risk control and operation assessment.

How we work

We begin with geotechnical and environmental assessments to define feasibility and the best tunnelling strategy. We then develop structural, electromechanical and safety systems in parallel, ensuring coordinated delivery from design to commissioning. During construction, we provide technical assistance, site supervision and operational readiness support.

Covering the full tunnelling lifecycle

Our approach includes fire evacuation studies, smoke control simulations, emergency ventilation, drainage and access logistics, fully integrated with control systems, signage and user safety. We close the cycle with ACROT Maintenance, Sener’s framework for risk control and long-term operation, ensuring continuous reliability.

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How we support tunnelling projects

We cover all aspects of tunnelling: geotechnical and seismic studies, excavation methodologies (TBM, NATM, cut-and-cover, microtunnelling), structural linings, ventilation, fire safety, drainage and access systems. Our teams apply advanced modelling (FEM, CFD), BIM, RAMS and digital twins to ensure robust designs and minimize risks.

BIM
Integrando metodología de Modelado de Información de Construcción para agilizar el diseño, la construcción y la gestión de activos.
Accesibilidad
Diseñando entornos inclusivos que garantizan el acceso y la usabilidad igualitaria para todas las personas.
Diseño de túneles
Diseñando túneles para transporte subterráneo seguro y eficiente.
Ingeniería estructural
Ideando sistemas estructurales para seguridad, rendimiento e integración arquitectónica.
Diseño sísmico
Ideando estructuras para resistir fuerzas sísmicas y garantizar la seguridad de los ocupantes.
Asesoría en políticas de planificación
Asesorando sobre políticas de planificación para apoyar el desarrollo sostenible y el cumplimiento.
Movimiento de personas
Diseñando sistemas de movilidad para garantizar transporte seguro, eficiente e inclusivo.
Gestión de la construcción
Gestionando proyectos de construcción para asegurar entrega puntual, calidad y control de costes.
Puesta en marcha
Asegurando que los sistemas sean probados y validados para un rendimiento óptimo antes del lanzamiento operativo.
Ingeniería civil
Entregando soluciones estructurales e infraestructurales para entornos resilientes y eficientes.
Inteligencia artificial
Aplicando tecnologías de IA para automatizar procesos y generar conocimientos predictivos.
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At Sener, we develop tunnelling solutions that connect, protect and endure — helping cities grow underground with confidence, safety and technical excellence.