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Drilling method: Microtunneling
Material type: Sample
Drill length: 115 m
Drill diameters: 762 mm
Execution time: 2017
Principal: Hoogheemraadschap Hollands Noorderkwartier
   

Customer challenge

The pressure pipeline of Hoogheemraadschap Hollands Noorderkwartier, in Oostzaan, consists partly of asbestos cement (AC) piping and PVC piping. AC material is sensitive to brittle fractures and settlements. The overburden on the other pipe section has increased significantly. As a result, the pressure line is vulnerable to rupture. This was underlined by a leakage from the pipeline at the Kerkstraat in January 2014. A rupture in or near the embankment can lead to subsidence of the A8 motorway. In order to remove the risks, the Oostzaan pipeline in the area around the Kerkstraat and near the A8 motorway will be relocated by HHNK.

What was our solution

Kouwenberg Infra has carried out one Microtunneling for this purpose. A challenge with this drilling was that it had to be drilled through the embankment under a motorway. There was also a challenge in the length of the drilling, which was 115 metres in total. This involved drilling with steel DN 762 with tubes 6 metres long. The drilling was carried out successfully.

See also:

OFT boring Weesp

OFT boring Weesp

Afgelopen week hebben wij een OFT boring van 56 meter (polymeerbeton Ø400/Ø550) gerealiseerd op station Weesp, dit ten behoeve van aan te leggen droge blusleidingen. Inclusief aanvalskasten voor de brandweer aan beide zijden van het station en brandkranen op de perrons. Om de treinreizigers zo min mogelijk tot last te zijn hebben we met beperkte ruimte een veilige werkplek gerealiseerd, tevens hebben we het drukscherm van damwanden in eigen beheer geplaatst. 
 
OFT drilling north-east Groningen

OFT drilling north-east Groningen

At the moment we are working on a series of OFT drillings to construct the jacket pipes for the transport of industrial water and drinking water in order to bolster the water supply in the northeast of Groningen. By using more surface water as a source of industrial water, the drinking water sources will be preserved for drinking water in the future. The supply of the pipes (Ø914 and Ø1020 steel) is done in-house, which further guarantees the planning of this project.