DOWN UNDER IN OXFORDSHIRE

THE ARTICLE DESCRIBES THE TUNNELLING TRIAL AT CHINNOR, OXFORDSHIRE, THE FIRST EVER EXPERIMENTAL TUNNEL TO BE DRIVEN ANYWHERE IN THE WORLD. THE PROJECT HAS BEEN INITIATED BY THE TRANSPORT AND ROAD RESEARCH LABORATORY, CROWTHORNE AND THE DATA SPIN-OFF COULD BE USEFUL FOR WORK ON THE CHANNEL TUNNEL. CHALK HAS BEEN CHOSEN AS THE MEDIUM THROUGH WHICH THE EXPERIMENTAL TUNNEL WILL BE DRIVEN BECAUSE IT IS MORE TRACTABLE AND DOES NOT HAVE THE ABRASIVENESS OF SANDSTONE OR THE COMPLEX RHEOLOGICAL BEHAVIOUR OF CLAY. A 5 METRE DIAMETER SHIELD MACHINE WITH AN OPEN CUTTING WHEEL CAPABLE OF OPERATION WITH EITHER PICKS OR DISC CUTTERS WILL BE USED. ADVANCE AND RETRACTION OF THE MACHINE IS BY PERIPHERAL JACKS AROUND THE SHIELD LINKED TO A THRUST REACTOR RING. LIMITED TUNNEL LINING TRIALS HAVE BEEN INCLUDED IN THE CHINNOR TRIAL.

  • Availability:
  • Corporate Authors:

    Morgan-Grampian Limited

    30 Calderwood Street
    London SE18 6QH,   England 
  • Publication Date: 1974-1-2

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Filing Info

  • Accession Number: 00081717
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Feb 27 1975 12:00AM