The article reviews the development of the Paris gare de Lyon project to construct a common interchange between metro and mainline rail services. The interchange or "under-station" common structure is being constructed beneath the existing SNCF installation. For this construction, excavation down to 23 M was carried out, the area being surrounded by a peripheral moulded wall in the upper strata (earth and alluvium) and by an impervious screen, made by surface injection, down to the level of the limestone. The walls were excavated using an experimental machine known as the hydromill which is able to operate without a rock-drill and so eliminate the transmission of shocks and vibrations to nearby buildings. To ensure stability of the structure on the supposition of ten-year floods, use was made of the decompression shaft system drilled at the excavation stage. All parts of the structure were sheathed with PVC sheeting up to the maximum level of the water table. Details are given of precautions taken to ensure the stability of the foundations of surrounding buildings by underpinning and grouting operations. The covering abstract for the proceedings is IRRD abstract no 252594.

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  • Supplemental Notes:
    • Eurotunnel '80, held Basle, Switzerland, 16-19 September, 1980.
  • Corporate Authors:

    Institution of Mining & Metallurgy

    44 Portland Place
    London W1N 4BR,   England 
  • Authors:
    • Lezsa, L
  • Publication Date: 1980

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Filing Info

  • Accession Number: 00331125
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-900488-50-6
  • Files: ITRD, TRIS
  • Created Date: Jun 12 1982 12:00AM