Statistical Analysis on Strength of Rock Based on YAI Concept


Article Preview

In this paper, a new concept, YAI (yielding approach index), is firstly proposed to estimate the safety differences of rock and rockmass whose stress states are close to yielding. Secondly, in order to describe the intrinsic heterogeneity of strength of the same rock, the safety parameter ω, which is the phase complementary parameter of YAI, is supposed to be a stochastic variable in this paper and conform to the Weibull’s distribution. By analyzing the triaxial test data of five types of rocks, it can be found that ω as a stochastic variable evidently conforms to the Weibull’s distribution. Results in this paper give an important and useful reference to the safety analysis for geotechnical engineering.



Key Engineering Materials (Volumes 340-341)

Edited by:

N. Ohno and T. Uehara




C. Q. Zhang et al., "Statistical Analysis on Strength of Rock Based on YAI Concept", Key Engineering Materials, Vols. 340-341, pp. 1157-1162, 2007

Online since:

June 2007




[1] R.L. Wang, N.M. Chen, and B.C. Liu: Mining and Metallurgical Engineering, Vol. 14 (1994), pp.16-19.

[2] J.C. Wang, Z.Z. Luo: Journal of China University of Mining & Technology, Vol. 24 (1995), pp.31-35.

[3] W.H. Tan, J.C. Wang, R.D. Zhou: Chinese Journal of Rock Mechanics and Engineering, Vol. 18 (1999), pp.546-549.

[4] J. Xing, H.Q. Sun, W.T. Li: Geotechnical Engineering Technique, Vol. 18 (2004), pp.5-7.

[5] B. Sudret and A.D. Kiureghian: Probabilistic Engineering Mechanics, Vol. 17 (2002), pp.337-348.

[6] S. Chakraborty and B. Bhattacharyya: International Journal of Solids and Structures, Vol. 39 (2002), P. 2465-2475.

[7] C.I. Lee and J.J. Song: Tunnelling and Underground Space Technology, Vol. 18 (2003), pp.467-483.

[8] L.H. Du and L.Q. Huang: Chinese Journal of Hydraulic Engineering, Vol. 1 (2001), pp.85-89.

[9] V.R. Hajiabdolmajid: Ph. D. Thesis, Canada�Queen's University, (2001).

[10] Y.W. Zan, M.H. Yu and S.J. Wang: Chinese Journal of Rock Mechanics and Engineering, Vol. 21 (2002), pp.1435-1441.

Fetching data from Crossref.
This may take some time to load.