Although no mathematical theory accounts for the wide range of in situ stress patterns encountered throughout the world, empirical relationships for sub-continental areas have been established. The authors have tabulated and plotted reported stress measurements where the data including both vertical stress and an average horizontal stress or two orthogonal horizontal stresses. Two graphs are plotted, one shows the variation of vertical stress with depth, the other shows the variation of the ratio of horizontal to vertical stress (k) with depth. Vertical stresses appeared to be directly proportional to the depth except perhaps at shallow depths where there was a wide range of values for the ratio k. Equations are derived using the available data. Methods are suggested of applying empirical equations and limits to unknown conditions to form a basis for a preliminary design study. /TRRL/

  • Availability:
  • Corporate Authors:

    Pergamon Press, Incorporated

    Headington Hill Hall
    Oxford OX30BW,    
  • Authors:
    • Brown, E T
    • Hoek, E
  • Publication Date: 1978

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00194450
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jul 11 1979 12:00AM