MONITORING PILOT PROJECTS USING BORED TUNNELLING: THE SECOND HEINENOORD TUNNEL AND THE BOTLEK RAIL TUNNEL

This paper describes the research related to two Dutch pilot projects for tunnelling in soft soil: the Second Heinenoord Tunnel and the Botlek Tunnel. The monitoring of the projects was commissioned by the Centre for Underground Construction (COB); it emphasises the importance of measurements, especially when they have been preceded by predictions. Both Heinenoord Tunnels carry the A29 motorway to and from the Rotterdam Europort area. The Second Heinenoord Tunnel has two 1350m long tubes, each with external diameter 8.5m, with a 950m long bored part for each tube. The tunnel was driven under the ground water table, through sand, peat, and clay layers. Boring works began in February 1997 and ended in June 1998, despite an instability of the bore-front, which delayed them for four weeks. One tunnel boring machine (TBM) was used. Geotechnical deformations and the structural behaviour of the tunnel lining, including damage to it, were monitored. The boring of the Botlek Rail Tunnel began in Spring 1999, and is using experience from the first project. Monitoring during its construction is focusing on TBM-related aspects, geotechnical aspects, structural behaviour of the tunnel lining, and dynamic tunnel behaviour. Each of the two monitoring schemes has prediction, measurement, and evaluation phases.

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    Elsevier

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  • Authors:
    • BAKKER, K J
    • DE BOER, F
    • ADMIRAAL, JBM
    • VAN JAARSVELD, E P
  • Publication Date: 1999

Language

  • English

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Filing Info

  • Accession Number: 00779408
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 7 1999 12:00AM