Estimating Equivalent Mohr-Coulomb Strength Parameters Based on the Sheorey Rock Mass Strength Criterion

ZHENG Xing; ZHANG Sheng

doi:10.3969/j.issn.1001-5485.2014.11.0082014,31(11):38-41,46

PDF(1029 KB)

Journal of Changjiang River Scientific Research Institute ›› 2014, Vol. 31 ›› Issue (11) : 38-41. DOI: 10.3969/j.issn.1001-5485.2014.11.0082014,31(11):38-41,46

CHARACTERISTICS AND TESTS OF ROCK MECHANICS

Estimating Equivalent Mohr-Coulomb Strength Parameters Based on the Sheorey Rock Mass Strength Criterion

ZHENG Xing,ZHANG Sheng

Author information +

History +

Abstract

According to the principle of fitting non-linear strength criterion with linear M-C criterion in σ₁-σ₃ plane, we derived the equivalent M-C strength parameters of the Sheorey strength criterion which is based on the RMR system by use of the least square method. We also present the general formulas of the equivalent M-C strength parameters to be used in the evaluation of strength and stability of rock mass. A calculation example is given to compare the M-C strength parameters between Sheorey criterion and Hoek-Brown criterion. Results reveal that the strength parameters of both criteria are well consistent.

Key words

rock mechanics / Sheorey strength criterion / Mohr-Coulomb criterion / least square method / equivalent strength parameters

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

ZHENG Xing,ZHANG Sheng. Estimating Equivalent Mohr-Coulomb Strength Parameters Based on the Sheorey Rock Mass Strength Criterion[J]. Journal of Changjiang River Scientific Research Institute. 2014, 31(11): 38-41 https://doi.org/10.3969/j.issn.1001-5485.2014.11.0082014,31(11):38-41,46

References

[1] EDELBRO C. Evaluation of Rock Mass Strength Criteria. Sweden:Department of Civil and Mining Engineering, Division of Rock Mechanics,Lulea University of Technology, 2004.
[2] 李建林,陈兴周. 岩体破坏准则及其参数研究. 地下空间与工程学报, 2007, 3(5): 982-986.(LI Jian-lin, CHEN Xing-zhou. Study on Failure Criterion and Its Parameters for Rock Mass. Chinese Journal of Underground Space and Engineering, 2007, 3(5): 982-986.(in Chinese))
[3] 潘别桐. 工程岩体强度的估算方法. 地球科学:中国地质大学学报, 1985, 10(11): 63-67.(PAN Bie-tong. Estimation Method for Strength of Engineering Rock Mass. Earth Science: Journal of China University of Geosciences,1985, 10(11): 63-67. (in Chinese))
[4] 周小平, 钱七虎, 杨海清. 深部岩体强度准则. 岩石力学与工程学报, 2008, 27(1): 117-123.(ZHOU Xiao-ping,QIAN Qi-hu,YANG Hai-qing. Strength Criteria of Deep Rock Mass. Chinese Journal of Rock Mechanics and Engineering,2008, 27(1): 117-123. (in Chinese))
[5] 杨永兵. 边坡岩石强度与岩体强度的工程变换. 金属矿山,2004, (9): 10-12.(YANG Yong-bing. Engineering Transformation of Strength Between Rock and Rock Mass of Open-bit Slope. Metal Mine,2004, (9): 10-12. (in Chinese))
[6] 朱志明, 章广成, 朱娇燕, 等. 基于广义 Hoek-Brown 准则的岩体等效强度. 煤田地质与勘探, 2012, 40(4): 52-55.(ZHU Zhi-ming,ZHANG Guang-cheng,ZHU Jiao-yan,et al. Research on Equivalent Strength Rock Mass Based on Generalized Hoek-Brown Failure Criterion. Coal Geology and Exploration,2012, 40(4): 52-55. (in Chinese))
[7] HOEK E, BROWN E T. Empirical Strength Criterion for Rock Masses. Journal of Geotechnical Engineering Division,ASCE,1980,106(GT9):1013-1035.
[8] HOEK E, CARRANZA-TORRES C, CORKUM B. Hoek-Brown Failure Criterion(2002 ed)// Proceedings of the 5th North American Rock Mechanics Symposium, Toronto, Ontario, Canada, July 7-10, 2002: 267-273.
[9] 吴黎辉. 岩体经验强度准则研究. 西安: 长安大学, 2004.(WU Li-hui. Study on Empirical Strength Criterion of Rock Mass. Xi’an: Chang’an University, 2004. (in Chinese))
[10] SOFIANOS A I, NOMIKOS P P. Equivalent Mohr-Coulomb and Generalized Hoek-Brown Strength Parameters for Supported Axisymmetric Tunnels in Plastic or Brittle Rock. International Journal of Rock Mechanics and Mining Sciences,2006,43(5): 683-704.
[11] FU W X, LIAO Y. Non-linear Shear Strength Reduction Technique in Slope Stability Calculation. Computer and Geotechnics,2011,37(3): 546-558.
[12] 杨强, 陈英儒, 刘耀儒, 等. 岩体等效强度参数确定的理论和方法. 岩石力学与工程学报, 2008, 27(10): 1993-1999.(YANG Qiang,CHEN Ying-ru,LIU Yao-ru,et al. Theory and Method of Determining Equivalent Strength Parameters of Rock Mass. Chinese Journal of Rock Mechanics and Engineering,2008, 27(10): 1993-1999.(in Chinese))
[13] SHEOREY P R. Empirical Rock Failure Criteria. Rotterdam: Balkema,1997:176.
[14] SHEOREY P R, BISWAS A K, CHOUBEY V D. An Empirical Failure Criterion for Rocks and Jointed Rock Mass. Engineering Geology,1989,26(2):141-159.