This website uses cookies. For more information check our policy.

Agree

THE NETHERLANDS' NORTH-SOUTH-ROUTE

New records one after another

The Netherlands is reacting to the growing gas demand in northwestern Europe by constructing the North-South Route. A total of 485 kilometers of new pipelines must be installed to extend the existing network. Various obstacles such as roads, canals, railways, and rivers have to be crossed underground safely and accurately. The innovative Direct Pipe® method developed by Herrenknecht was used on seven sections. Trenchless and in one single step the borehole is being constructed and the pipeline installed. This method has proven its efficiency, for example, near Lochem, where a 1,400-meter-long pipeline was completely installed in just 11 working days. In the port of Rotterdam, the Hartelkanaal was crossed under space constraints and with steep entry and exit angles (10° / 12°), using this method. The newly developed Pipe Express® technology celebrated its successful debut with the installation of a 500-meter-long pipeline near Sevenum. Innovative pipeline installation technology from Herrenknecht has impressively demonstrated its advantages at key points along the North-South Route.

Project highlights

  • With 1,400m, the longest drive excavated using the Direct Pipe® method, managing overburden of only 4m.
  • Installation of 232m pipeline in 24h.
  • Pipe Express® method: Installation speeds of 1.2m / min were achieved.
  • Clear advantages compared to conventional methods: smaller route widths, fewer staff and less earthmoving, and no lowering of groundwater needed.

Technical background

Constructing the borehole and installing the pipe string in one single step – made possible with the Direct Pipe® method developed by Herrenknecht for the fast, precise, and safe installation of pipelines. Direct Pipe® combines proven microtunnelling technology with the power of the Herrenknecht Pipe Thruster. In addition, the innovative Herrenknecht Pipe Express® method is being employed on the North-South Route for the first time.

www.gasunie.nl

Project data
Column 0 Column 1
Pipeline length
362 – 1,400 m
Geology
sand, gravel, loam
Contractors
A. Hak Drillcon B.V., Visser & Smit Hanab B.V.
Machine data
7x Direct Pipe:
Diameter: 1,295 mm
Pipeline diameter: 48"
Max. thrust and pulling force Pipe Thruster: 500 t
Max. torque: 150 kNm

Still got questions?

We are ready!

Jack Brockway President and CEO Herrenknecht Tunnelling Systems USA Inc.
Gerhard Goisser COO Herrenknecht Tunnelling Systems USA, Inc.

Your contact person Contact us

Jack Brockway President and CEO Herrenknecht Tunnelling Systems USA Inc.
Gerhard Goisser COO Herrenknecht Tunnelling Systems USA, Inc.