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Continental solutions aid mega tunnel project

Conveyor belts designed by Continental are being used to transport rubble from Förbifart Stockholm (Stockholm Bypass), one of Sweden’s biggest infrastructure projects.

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Continental solutions aid mega tunnel project

The bypass, which is situated to the west of the Swedish capital, has been under construction since 2015. Most of the bypass is being built underground, and it is intended as a north-south link to reduce the volumes of traffic passing through the city centre.

 

HeidelbergCement’s aggregate company Jehander is also using solutions from Continental at its Löten quarry near Stockholm to enable rubble from the mega-tunnel to be reused for road construction.

 

More than 18 km of the bypass are up to 80m below ground level and pass under Sweden’s third-largest lake (Lake Mälaren) in three places.

 

During construction, a series of conveyor belt systems are being used to transport the extracted rock to three temporary ports that have been set up for the project. The rubble is taken across the waterways by inland vessels from the construction site in Stockholm to Jehander’s quarry in Löten.

 

Transportation by sea has proven to be a much more efficient mode of transport than using truck fleets. Ships can carry between 1,500t and 3,000t of rock per load, whereas trucks can manage only 35t. As many as four fully loaded ships a day arrive in Jehander’s port.

 

The rock is washed, crushed, and treated at Jehander’s quarry site, before being reused as concrete, mostly for road construction, or to build houses and office buildings in Stockholm and the surrounding area.

 

Jehander operates six strategically placed quarries in the Stockholm area. “Here at Löten quarry, our textile conveyor belts are currently working at full speed as a result of the major bypass construction project,” explained Continental’s Daniel Grimes.

 

“They have proven to be an exceptionally reliable solution on numerous projects that building materials company HeidelbergCement and its subsidiaries have worked on in Sweden as well as on projects all over the world.”

 

Jehander’s Niclas Pettersson commented. “So far we have taken roughly 7% of the total 5.5 Mt of rock that needs to be processed out of the tunnel. For this undertaking, we can count not only on the quality and long service life of Continental’s conveyor belts, but also on the smooth operation of the systems. Service plays just as big a role as the high-quality products and systems in our longstanding partnership.”

 

Service partner Continental said that its tight-knit network means that it can offer its customers a local service with everything from a single source – from technical advice, extensive planning and engineer-driven development all the way through to manufacturing, installation, commissioning, maintenance and monitoring for complex conveyor systems and delivery of conveyor belts and components.

 

“Our range of round-the-clock services also includes assistance with conveyor belt replacement and arranging for the belts to be vulcanised or repaired with local partners, where required,” said Grimes.

 

“This is how we ensure that the systems keep going. It is this combination of quality products, professional expertise, customer focus and our understanding of the local culture that makes us successful on this market.”

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