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Geotechnical & Geological Engineering

, Volume 10, Issue 2, pp 135–140 | Cite as

Reinforcement of planar discontinuities in elastic rock

  • B. Indraratna
  • P. Nutalaya
Technical Note
  • 48 Downloads

Keywords

Civil Engineer Planar Discontinuity Elastic Rock 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

List of Symbols

Δσ

stress change after excavation

Er,Ej,Ejr

moduli of intact rock, single joint and jointed rock

Eb

elastic modulus of the bolt

kn

normal stiffness of joint

Ab

cross section area of the bolt

Ar

longitudinal spacing × transverse spacing (area of influence per bolt)

σb

axial bolt stress

εb

axial strain of the bolt

εr,εj,εjr

strains of intact rock, joint and jointed rock

Aj

area of the joint

τb

shearing resistance of the bolt (at the joint)

σn

normal stress at the joint plane

σ1,σ3

vertical and horizontal field stresses (assumed principal)

cj,φj

cohesion and friction angle of the joint

θ

angle between the bolt and the joint

a

inclination of the joint to the vertical axis

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References

  1. Indraratna, B. and Kaiser, P.K. (1990) Analytical model for the design of grouted rock bolts,International Journal for Numerical and Analytical Methods in Geomechanics,14, 227–51.Google Scholar
  2. Jaeger, J.C. and Cook, N.G.W. (1979).Fundamentals of Rock Mechanics, 3rd edition, Chapman and Hall, London.Google Scholar

Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • B. Indraratna
    • 1
  • P. Nutalaya
    • 2
  1. 1.Department of Civil & Mining EngineeringUniversity of WollongongAustralia
  2. 2.Division of Geotechnical EngineeringAsian Institute of TechnologyBangkokThailand

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