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An analytical method for determining shear stiffness of an inclined grouted bolt installed across an open discontinuity

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Summary

The shear stiffness of a grouted, rock bolt intersecting a discontinuity controls the amount of shear movement that can occur for a given shear force. In this paper an analytical model is developed for estimating the shear stiffness of a single bolt as a function of bolt inclination, hole and bolt diameter, bolt, grout and rock Young's moduli, and aperture (opening) across the discontinuity, and sensitivity studies conducted to determine the most significant of these variables as predicted by the model.

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References

  • Bjurstrom, S. (1974) Shear strength of hard rock joints reinforced by grouted untensioned bolts.Proceedings 3rd International Congress on Rock Mechanics, Denver, Vol. 11B, pp. 1194–9.

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  • Haas, C.J. (1981) Analysis of rock bolting to prevent shear movement in fractured ground.Mining Engineering, 698–704.

  • Krauland, N. (1983) Rock bolting and economy.Proceedings of the International Symposium on Rock Bolting, Abisko, Sweden, pp. 499–510

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Authors and Affiliations

  1. Department of Geological Engineering, University of Manitoba, R3T 2N2, Winnipeg, Manitoba, Canada

    B. Stimpson

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  1. B. Stimpson
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Stimpson, B. An analytical method for determining shear stiffness of an inclined grouted bolt installed across an open discontinuity. International Journal of Mining and Geological Engineering 5, 299–305 (1987). https://doi.org/10.1007/BF01560780

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  • DOI: https://doi.org/10.1007/BF01560780

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