Tunnelbau

Tunnelling

Quality fosters greatness.

Implenia is a recognised expert in ambitious underground construction projects of all kinds. Over the course of our hundred-year history we have built up a unique set of skills and experience, especially in road and rail tunnels and power stations. Many of our projects have entered the annals of construction history, including the world's longest rail tunnel, the Gotthard Base Tunnel.

All of our efforts centre on the sustainable efficiency of our customer solutions – in terms of costs, deadlines, quality and functionality. Implenia is committed to the highest quality standards at all times. We combine proven skills and a spirit of innovation with state-of-the-art processes and technologies.

Our services

Transport tunnels

Transport tunnels

Successful tunnel construction for rail and road combines experience and competence with modern technology and respect for nature. Implenia has mastered all the modern construction methods of tunnel construction. And all the supplementary special procedures are part of our daily bread. Implenia's comprehensive range of services, which we offer in Switzerland and in selected foreign markets, also includes the demanding final construction of rail and road tunnels using railway and transport technology, as well as the renovation of underground structures.

We set international standards. Our latest coup: the world's longest railway tunnel through the Gotthard, at 57 kilometres, which will be opened in a few years' time. We are open to all forms of cooperation, whether as general contractor, total contractor or specialized subcontractor.

Implenia has mastered all excavation procedures and construction methods:

  • rock drilling and blasting
  • Driving with tunnel boring machines in the rock: full cut tunnel boring machine, tunnel boring extension machine
  • Schildmaschinenvortrieb im Lockergestein: mit/ohne mechanische Stützung, mit Druckluftstüt-zung (Druckluftschild), mit Erddruckstützung (Erddruckschild), mit Flüssigkeitsstützung (Hydroschild)
  • Machine-assisted tunnelling in rock and loose rock: roadheader, excavation with mining hammer/excavator bucket, ripper or cutting head
  • Special procedures and auxiliary building measures: pipe umbrella, spit umbrella, jetting umbrella, injection, freezing method, chest anchor
  • Preventer protected advance explorations
  • Segment production

We construct vertical and inclined shafts using the sinking method, the raise drilling method or as shaft excavation. We also provide numerous additional services such as materials management and logistics concepts, surveying, project and construction management as well as consulting and feasibility studies.

Servicetunnels

Servicetunnels

Supply and disposal pipelines are central lifelines of populated areas. The constant growth of urban centres and agglomerations calls for new construction methods so that people and traffic are not disturbed as much as possible. Implenia offers innovative, sophisticated complete solutions in trenchless construction.

Using microtunnelling, pipe jacking and horizontal drilling, Implenia is able to construct service tunnels and pipelines that only require a start and finish shaft above ground. We also offer the construction of these shafts. This saves interfaces and your job is completed faster and more flexibly. Implenia can draw on its own complete range of equipment for all procedures.

Our service package for trenchless construction is rounded off by consulting and feasibility studies.

Power plant construction

Power plant construction

Implenia offers a comprehensive range of services in power plant construction. Our engineers and specialists are entrusted with the construction of tunnels and inclined shafts in challenging lengths and inclinations, whether in mechanized tunnelling, where we have unique experience and a comprehensive inventory of our own, or in conventional blasting. We construct vertical and inclined shafts using the sinking method, the raise drilling method or as shaft drifts. Finally, we also build caverns of all dimensions.

Construction sites for power plants are often located in mountainous areas that are difficult to access, where our engineers and specialists are confronted with special topographical and climatic requirements. Thanks to their broad experience and flexibility, they are able to master even the most difficult challenges and hand over the finished project to the client on time and in the accustomed Implenia quality.

Implenia has mastered all excavation techniques:

  • rock drilling and blasting
  • Driving with tunnel boring machines: full cut tunnel boring machine, tunnel boring machine
  • Machine-assisted tunnelling: roadheader, excavation with hammer/excavator bucket, ripper or cutting head
  • Special procedures and auxiliary building measures: pipe umbrella, spit umbrella, jetting umbrella, injection, freezing method, chest anchor
  • Preventer protected advance explorations

Added to this are numerous additional services such as materials management and logistics concepts, surveying, project and construction management as well as consulting and feasibility studies.