Fragmentation Studies with Small Flaws

  • William L. Fourney
Part of the International Centre for Mechanical Sciences book series (CISM, volume 275)


There presently exists disagreement with regard to the mechanism that is reponsible for the fragmentation that occurs in quarry blasting operations. The particular contribution of gas pressurization as opposed to stress wave initiation has not been clearly established. The various schools of thought range from the notion that gas pressurization plays the dominant role [1–5], to the idea that combinations of the stress waves and gas pressurization are responsible for the major amount of damage [6–8] to the thought that stress waves alone [9–11] are responsible for the resulting fragmentation.


Stress Intensity Factor Stress Wave Small Flaw Maximum Tensile Stress Radial Crack 
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  1. [1]
    Langefors, U. and Kihlstrom, B., The Modern Technique of Rock Blasting, Wiley, New York, 1963.Google Scholar
  2. [2]
    Persson, P.A., Lunborg, N. and Johansson, C.H., “The Basic Mechanism in Rock Blasting”, Proc. 2nd International Society for Rock Mechanics, Belgrade, 1970.Google Scholar
  3. [3]
    Porter, D.D. and Fairhurst, C., “A Study of Crack Propagation Produced by the Sustained Borehole Pressure in Blasting”, Proc. 12th Symp. Rock Mechanics, University of Missouri-Rolla, November 1970.Google Scholar
  4. [4]
    Ash, R.L., The Influence of Geological Discontinuities on Rock Blasting, Ph.D. Dissertation, University of Minnesota, 1973.Google Scholar
  5. [5]
    Hagen, T.N. and Just, G.D., “Rock Breakage by Explosives - Theory, Practice, and Optimization”, Proc. 3rd Congress International Society Rock Mechanics, Denver, Colorado, September 1974.Google Scholar
  6. [6]
    Kutter, H.K. and Fairhurst, C., “On the Fracture Process in Blasting”, Int. J. Rock Mech, Min. Sci. and Geomech. Abstr., Vol. 8, 1971.Google Scholar
  7. [7]
    Johansson, C.H. and Persson, P.A., “Fragmentation Systems”, Proc. 3rd Congress International Society for Rock Mechanics, Denver, Colorado, Sept. 1974.Google Scholar
  8. [8]
    Coursen, D.L., “Cavities and Gas Penetrations from Blasts in Stressed Rock with Flooded Joints”, Acta Astronautica, Vol. 6, 1979.Google Scholar
  9. [9]
    Duvall, W.I. and Atchison, T.C., “Rock Breakage by Explosives”, U. S. Bureau of Mines, R.E. 5356, 1957.Google Scholar
  10. [10]
    Starfield, A.M., “Strain Wave Theory in Rock Blasting”, Proc. 8th Symposium on Rock Mechanics, University of Minnesota, Sept. 1966.Google Scholar
  11. [11]
    Bhandari, S., “On the Role of Quasi-static Gas Pressurized Stress Waves in Rock Fragmentation by Explosives”, Proc. 6th International Colloquium on Gasdynamics of Explosives and Reactive Systems, Stockholm, Sweden, August 1977.Google Scholar
  12. [12]
    Barker, D.B., Fourney, W.L. and Dally, J.W., “Photoelastic Investigatior of Fragmentation Mechanisms, Part I - Borehole Crack Network”, NSF Report from University of Maryland, March 1978.Google Scholar
  13. Barker, D.B., Fourney, W.L. and Dally, J.W., “Photoelastic Investigation of Fragmentation Mechanisms, Part II - Flaw Initiated Network”, NSF Report from University of Maryland, August 1978.Google Scholar
  14. [13]
    Dally, J.W., “Applications of Photoelasticity to Elastodynamics”, Proc. Symposium on Dynamic Response of Solids and Structures, Stanford University, 1971.Google Scholar
  15. [14]
    Timoshenko, S. and Goodier, J.N., Theory of Elasticity, McGraw-Hill, New York, 1951.MATHGoogle Scholar
  16. [15]
    Bligh, T.P., Gaseous Detonations of Very High Pressures and Their Applications to a Rock Breaking Device, Ph.D. Dissertation, University of Whitwatersrand, Johannesburg, South Africa, 1972.Google Scholar
  17. [16]
    Ouchterlony, F., “Fracture Mechanics Applied to Rock Blasting”, Proc. 3rd Congress International Society for Rock Mechanics, Denver, Colorado, Sept. 1974.Google Scholar

Copyright information

© Springer-Verlag Wien 1983

Authors and Affiliations

  • William L. Fourney
    • 1
  1. 1.Mechanical Engineering College of EngineeringUniversity of MarylandCollege ParkUSA

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