Tunnelling

Picture shows a view into the tunnel U5 Europaviertel, Frankfurt a.M. Picture is coloured bluish by the light of the photographer
© PORR

Tunnelling.

General Contact persons Projects Certificates/Approvals Full-Service
Tunnelling

Perfectly connected underground.

Tunnelling is one of the most demanding disciplines in civil engineering and at the same time one of PORR's core competencies. Expertise, innovative strength, flexibility and technical solution competence are required in underground construction. In addition to prioritising the protection of the environment and resources, PORR's top priorities are occupational safety, health protection and quality.

As a reliable partner, we successfully demonstrate our technical expertise in all common tunnelling methods (Gripper TBM, open shield, earth pressure and hydro shield) and also in large cross-sections of 6 to 13 m time and again.

Our range of services includes the construction of transport tunnels such as road, underground and railway tunnels, infrastructure structures for drinking water supply, district heating pipelines, sewers and cable routes, as well as other underground construction such as tunnels, shafts, caverns and hydroelectric power plant construction.

We utilise the following technologies:

  • Conventional tunnelling technology (cyclical tunnelling) using the New Austrian Tunnelling Method (NATM)
  • Mechanical (continuous) tunnelling with tunnelling machines with diameters from 2.5 to more than 13 m
    • Drill tunnelling with hard rock TBMs (gripper machines) with subsequent in-situ concrete inner lining
    • Bore tunnelling with shield TBM with simultaneous single-shell segmental lining or double-shell lining with segments and in-situ concrete lining
    • Hydro shield tunnelling: tunnelling with fluid-supported face, segmental lining
    • Earth pressure shield tunnelling (EPB) with face support via earth pressure, segmental lining
    • Multimode tunnelling with alternating operating mode (EPB/liquid-supported/open mode), segment support
  • Mechanical tunnelling with pipe jacking technology using the full or partial cut method, with fluid-supported face if required, pipe diameters from 1.5 to more than 4 m

Contact persons.

Building is a people business. This makes personal contact all the more important. Here you will find your contact persons for tunnelling.

Contact persons: Tunnelling

Selected projects
Tunnelling.

Certificates/Approvals.

Ensuring quality requirements are met is a top priority at PORR. This is also demonstrated by our certificates and approvals. To ensure we are always up to date, our certificates and approvals are regularly reviewed and renewed by external audits and independent certification bodies.

Certificates/Approvals
Full-Service.

Solutions from a single source.
Safe and economical.

PORR is a technology leader in the planning and construction of sophisticated, customised customer requirements – safe and economical.

We use our extensive expertise to implement tailor-made solutions. We have our own teams of experts in all key trades along the entire construction value chain and offer comprehensive specialist knowledge from a single source: in government services, building construction, industrial construction, structural engineering, mineral raw materials, special civil engineering, tunnelling, environmental engineering and transport route engineering. Our service portfolio ranges from general planning to final implementation.

Our expertise – your benefit:

Holistic planning and execution

Smooth, punctual, accident-free and high-quality completion of your projects is essential for us. We offer all planning and construction services from a single source, from the execution of individual trades to cross-trade solutions including planning, site manager, delivery and installation of all materials.

Construction management: safe and economical

Cost-effectiveness and safety are at the centre of our solid construction management. Consistent, harmonised construction processes, transparency and the stringent implementation of measures for deadline and quality assurance are a matter of course for us.

Certified safety

We set the highest standards in terms of safety and quality. Our solutions guarantee reliable realisation and are confirmed by all the necessary test certificates .

Perfect project management

With sophisticated and proven digital control processes for the planning and execution phase, we ensure cost-effectiveness and safety in construction. Lean management methods help us to monitor and optimise construction progress on a daily basis so that all trades work together smoothly.

Optimised logistics and execution

Thanks to our own employees and the PORR network, we ensure optimal construction site logistics, punctual material deliveries as well as the organisation and execution of all necessary trades. Our promise: Construction from a single source.

Active deadline controlling and quality assurance

It is crucial for clients to be informed about the status of their project at all times. Regular budget and quality checks as well as an overview of schedule adjustments are essential. With our construction status report, you are always up to date.

Short runtimes

Thanks to our synchronised construction process and our many years of experience, we coordinate all work processes efficiently. Our experienced engineers simulate the construction process right at the start of a project, identify potential weak points and optimise the workflow.

Services and competences.