Analysis of the Approaches to Determine Crack Initiation Stress of Rock Materials in Compression Tests

Abstract:

As a strength parameter less dependent on loading conditions, crack initiation stress is suggested to be used as a lower limit for spalling strength. So far, no suggested methods are given by the ISRM to determine crack initiation stress. In order to understand the physical meaning of the various methods and determine this characteristic stress threshold accurately, we compared the similarities and differences between these methods and then analyzed their applicable scope. It is suggested that a comprehensive consideration be taken to select an appropriate method to identify the crack initiation of rocks in compression.

• Periodical: Applied Mechanics and Materials (Volumes 556-562)
• Pages: 2857-2861
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.556-562.2857
• Online since: May 2014
• Authors: Peng Fei Li*, Qing Chi Cai
• Keywords: Compression Condition, Crack Initiation Stress, Rock Mechanics

References

[1] BRACE W F, PAULDING B W, SCHOLZ C H. Dilatancy in the fracture of crystalline rocks[J]. Journal of Geophysical Research, 1966, 71(16): 3939–3953.

DOI: 10.1029/jz071i016p03939

[2] Fairhurst C, Cook N G W. The phenomenon of rock splitting parallel to the direction of maximum compression in the neighborhood of a surface[C]/Proceedings of the first congress on the international society of rock mechanics. 1966, 1: 687-692.

[3] MARTIN C D, CHRISTIANSSON R. Estimating the potential for spalling around a deep nuclear waste repository in crystalline rock[J]. International Journal of Rock Mechanics and Mining Sciences, 2009, 46(2): 219–228.

DOI: 10.1016/j.ijrmms.2008.03.001

[4] BRACE W F, PAULDING B W, SCHOLZ C H. Dilatancy in the fracture of crystalline rocks[J]. Journal of Geophysical Research, 1966, 71(16): 3939–3953.

DOI: 10.1029/jz071i016p03939

[5] LAJTAI E Z. Brittle fracture in compression[J]. International Journal of Fracture Mechanics, 1974, 10(4): 525–536.

DOI: 10.1007/bf00155255

[6] MARTIN C D, CHANDLER N A. The progressive fracture of Lac du Bonnet granite[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts, 1994, 31(6): 643–659.

DOI: 10.1016/0148-9062(94)90005-1

[7] EBERHARDT E. Brittle rock fracture and progressive damage in uniaxial compression[D]. Saskatoon: University of Saskatchewan, (1998).

[8] ZHANG Chun-sheng, CHEN Xiang-rong, HOU Jing, et al. Study of mechanical behavior of deep-buried marble at Jinping II hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29 (10): 1999–(2009).

[9] ZHAO X G, CAI M. WANG J, et al. Damage stress and acoustic emission characteristics of the Beishan granite. International Journal of Rock Mechanics and Mining Sciences, 2013, 64: 258–269.

DOI: 10.1016/j.ijrmms.2013.09.003

[10] NICKSIAR M, MARTIN C D. Evaluation of methods for determining crack initiation in compression tests on low-porosity rocks[J]. Rock Mechanics and Rock Engineering, 2012, 45(4): 607–617.

DOI: 10.1007/s00603-012-0221-6