A THEORETICAL STUDY OF THE POSSIBILITIES FOR IN SITU ROCK DENSITY DETERMINATION BY MEANS OF COSMIC RAY MUON INTENSITY MEASUREMENT

EN TEORETISK STUDIE AV MOEJLIGHETERNA ATT PESTAEMMA BERGGRUNDENS DENSITET IN SITU FRAAN MAETNINGAR AV DEN KOSMISKA STRAALNINGENS MYONKOMPONENT

The possibilities of in situ rock density determinations by means of subsurface cosmic ray muon intensity measurements have been studied. The calculations are based on two hypothetical scintillation counter telescopes, one intended for registration in a gallery and one intended for drillhole use. It is shown that density measurements are possible and that such a system has some unique properties. A certain spatial resolution can be achieved and the measurements are only influenced by the density distribution in the forward direction. Some prospecting situations have been studied. A massive mineralization between the telescope and the ground means a certain rise in mean density of the rock and consequently a decrease in the counting rate in that direction. The minimum registration time, needed for the indication of an ore body, is investigated. Within a depth of a few hundred meters this technique might be useful for in situ mean density determinations of overlying rock. In certain situations the accuracy needed for indication of a massive ore body can be achieved within an acceptable registration period. At shallow depths this technique provides fast density determinations, which might be useful in construction work. /TRRL/

  • Corporate Authors:

    Swedish Board for Technical Development

    P.O. Box 43200
    S-100 72 Stockholm,   Sweden 
  • Authors:
    • Malmqvist, L
    • Jacobsson, L
    • JOENSSON, G
    • Kristiansson, K
  • Publication Date: 1976-11

Language

  • Swedish

Media Info

  • Features: Figures; References;
  • Pagination: 25 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00182669
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: STU-Report 75-3308 Monograph
  • Files: ITRD, TRIS
  • Created Date: Dec 3 1978 12:00AM