GROUND FREEZING: THE FIRST OPTION

A variety of projects are described in which the technique of ground freezing has been used. Used for over a hundred years, it is a reliable and well-proved means of excluding ground water and/or stabilising subsurface excavations. It is expensive however and often chosen only when a project runs into difficulties. Refrigeration is provided either by liquid nitrogen or by an ammonia/brine system. Freezing was used under the river medway in Kent when an unexpected water-charged fissure was encountered and in strathclyde when running sands and silts were found. The problem of decomposed granite in the du toitskloof tunnel in South Africa was overcome by freezing. Both ammonia and liquid nitrogen were used in tunnels near the Manchester ship canal at runcorn. A directional technique in a Yorkshire coalmine economised on the amount of freezing required. Brief details are given of the methods used and the usefulness of the technique in awkward situations stressed. (TRRL)

  • Availability:
  • Corporate Authors:

    Mining Journal Limited

    60 Worship Street
    London EC2A 2HD,   England 

    PHILIPP HOLZMANN AG

    60 WORSHIP STREET
    London,   United Kingdom 
  • Authors:
    • Harvey, S
  • Publication Date: 1988-12

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00499381
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 30 1990 12:00AM