Study on Propagation Rules of a Close Crack in Rockmass

Abstract:

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In this paper, supposing the rockmass is an idealistic elastic object, the methods to calculate I type and II type strength factors of the crack tip are obtained by analyzing the stress state of the inner surface of a close crack in rockmass under compressive and shear stress and applying complex variable function stress method and superposition principle. Furthermore, supposing the friction coefficient, f , of the crack surface is a constant and the normal pressure, P(x) , on the crack surface obeys to normal distribution, the propagation rules of a close crack under compressive and shear stress are also deduced.

Info:

Periodical:

Key Engineering Materials (Volumes 348-349)

Edited by:

J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel

Pages:

337-340

Citation:

G. Zhang et al., "Study on Propagation Rules of a Close Crack in Rockmass", Key Engineering Materials, Vols. 348-349, pp. 337-340, 2007

Online since:

September 2007

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Price:

$38.00

[1] Jianhua Wang: Photoelastic study of closed crack under compression and shear. Seismological Journal. No. 7(1990), p.204~211.

[2] Qunli Zhou: Compress shear fracture criterion of rock and it's application. Geotechnical Engineering. No. 5(1987), p.33~37.

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