The author traces the development of tunnel boring machines at the Mining Research and Development Establishment of the National Coal Board from 1958 to the present date. The first machines were designed for mechanising headings in stone. Machines have also been designed for dinting and low-height heading in coal and soft stone. More recently a family of tunnelling machines and heavy duty roadheaders has been designed using water jet assisted-cutting and considerable monitoring and automation. The 5.5 m diameter circular tunnelling machine has been designed to cope with both extremes of strata and has facilities for mechanically constructing a permanent lining of locked concrete panels behind the machine. Experiments with super heavy-duty roadheaders with slewing aprons are described. Preliminary research indicates that water pressures greater than 30 mpa are needed to reduce forces on the pick. Attempts are also being made to provide automatic control of cutting and the operator is provided with a digital readout of the angle of the boom with the axis of the shield. Computer-based targets are being tried with the laser beam so that correction of deviation from the desired axis can be easily made. Continuous operation of roadheading could be possible using a system under study which includes support setting facilities. (TRRL)

  • Availability:
  • Corporate Authors:

    Institution of Mining Engineering

    3 Grosvenor Crescent
    London SW1X 7EG,   England 
  • Authors:
    • Barkham, D K
  • Publication Date: 1984-5

Media Info

  • Features: Photos; Tables;
  • Pagination: p. 525-528
  • Serial:
    • Mining Engineer
    • Volume: 143
    • Issue Number: 272
    • Publisher: Institution of Mining Engineering
    • ISSN: 0026-5179

Subject/Index Terms

Filing Info

  • Accession Number: 00391538
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jan 30 1985 12:00AM