基于原位试验和规范的岩体抗剪强度与Hoek-Brown准则估值比较

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (305 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Approach of determining shear strength of rock mass at present is briefly reviewed. Taking Maerdang hydropower station located in the upstream of the Yellow River for example，the relationship between shear strength and BQ rating is built up on the basis of rock mass classification，suggested shear strength by codes and in-situ large scale shearing test；and the relationship between BQ rating and GSI is also created according to field survey and measurement. Based on these，shear strength of rock mass at in-situ test point is estimated by Hoek-Brown criterion. The result shows that rock mass shear strength derived from this paper?s method is coincident with practical situation；while equivalent fraction coefficient from Hoek-Brown criterion is lower than test value and cohesion force is far greater than that from shearing test. It is shown by error analysis that the difference between experiment values and estimated ones is mostly induced by the span of minimum principal stress used in Hoek-Brown criterion. For this situation，some cautions and corresponding resolve methods while using Hoek-Brown criterion are reminded.

Key words： rock mechanics shear strength of rock mass rock mass classification large-scale shearing test Hoek-Brown criterion

Received: 20 December 2011

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

https://rockmech.whrsm.ac.cn/EN/Y2012/V31/I5/1000

[1]	CAI M，KAISER P K，UNO H，et al. Estimation of rock mass deformation modulus and strength of jointed hard rock masses using the GSI system[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(1)：3-19.
[2]	YANG X L，YIN J H. Slope equivalent Mohr-Coulomb strength parameters for rock masses satisfying the Hoek-Brown criterion[J]. Rock Mechanics and Rock Engineering，2010，43(4)：505-511.
[3]	JUSTO J L，JUSTO E，AZANON J M，et al. The use of rock mass classi?cation systems to estimate the modulus and strength of jointed rock[J]. Rock Mechanics and Rock Engineering，2010，43(3)：287-304.
[4]	胡盛明，胡修文. 基于量化的GSI系统和Hoek-Brown准则的岩体力学参数的估计[J]. 岩土力学，2011，32(3)：861-866.(HU Shengming，HU Xiuwen. Estimation of rock mass parameters based on quantitative GSI system and Hoek-Brown criterion[J]. Rock and Soil Mechanics，2011，32(3)：861-866.(in Chinese)) " target="_blank">
[5]	刘树新，刘长武，袁绍国，等. 基于V.RQD值与Hoek-Brown准则的破碎岩体强度研究[J]. 岩石力学与工程学报，2010，29(8)：1 670- 1 675.(LIU Shuxin，LIU Changwu，YUAN Shaoguo，et al. Study of broken rock mass strength based on V.RQD value and Hoek-Brown criterion[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(8)：1 670-1 675.(in Chinese)) " target="_blank">
[6]	任江，余伟健. 基于Hoek-Brown破坏准则的岩体参数预测方法与应用[J]. 煤炭技术，2010，29(1)：160-162.(REN Jiang，YU Weijian. Method and application of rock mass parameter prediction based on Hoek-Brown criterion[J]. Coal Technology，2010，29(1)：160-162.(in Chinese)) " target="_blank">
[7]	武雄，贾志欣，陈祖煜，等. 工程岩体抗剪强度确定综合方法——GMEM研究[J]. 岩石力学与工程学报，2005，24(2)：246-251.(WU Xiong，JIA Zhixin，CHEN Zuyu，et al. Research on a synthetical method GMEM on ascertaining shear strength for engineering rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(2)：246-251.(in Chinese))
[8]	陈祖安. 中国水力发电工程(工程地质卷)[M]. 北京：中国电力出版社，2000：141-145.(CHEN Zu?an. Hydropower engineering in china(engineering geology volume)[M]. Beijing：China Electric Power Press，2000：141-145.(in Chinese)) " target="_blank">
[9]	BARTON N. Some new Q-value correlations to assist in site characterization and tunnel design[J]. International Journal of Rock Mechanics and Mining Sciences，2002，39(2)：185-216.
[10]	HOEK E，WOOD D，SHAH S. A modified Hoek-Brown criterion for jointed rock masses[C]// Proceedings of Rock Characterization，Symposium of International Society of Rock Mechanics. [S.l.]：[s.n.]，1992：209-213. " target="_blank">
[11]	HOEK E，CARRANZA-TORRES C，CORKUM B. Hoek-Brown failure criterion[C]// Proceedings of NARMS-TAC Conference. Toronto：[s.n.]，2002：267-273. " target="_blank">
[12]	何满潮，薛廷河，彭延飞. 工程岩体力学参数确定方法的研究[J]. 岩石力学与工程学报，2001，20(2)：225-229.(HE Manchao，XUE Tinghe，PENG Yanfei. A new way of determining mechanical parameters of engineering rock masses[J]. Chinese Journal of Rock Mechanics and Engineering，2001，20(2)：225-229.(in Chinese))
[13]	杜景灿，陈祖煜. 岩桥破坏的简化模型及在节理岩体模拟网络中的应用[J]. 岩土工程学报，2002，24(4)：421-426.(DU Jingcan，CHEN Zuyu. A simplified discontinuity propagation model and its application to mechanics of rock mass[J]. Chinese Journal of Geotechnical Engineering，2002，24(4)：421-426.(in Chinese))
[14]	中华人民共和国国家标准编写组. GB50218—94 工程岩体分级标准[S]. 北京：中国计划出版社，1995：13.(The National Standards Compilation Group of People?s Republic of China. GB50218—94 Standard for engineering classification of rock masses[S]. Beijing：China Planning Press，1995：13.(in Chinese)) " target="_blank">
[15]	中华人民共和国国家标准编写组. GB50487—2008 水利水电工程地质勘察规范[S]. 北京：中国计划出版社，2009：107.(The National Standards Compilation Group of People?s Republic of China. GB50487—2008 Code for geological investigation of water resources and hydropower engineering[S]. Beijing：China Planning Press，2009：107.(in Chinese)) " target="_blank">
[16]	HASHEMI M，MOGHADDAS S，AJALLOEIAN R. Application of rock mass characterization for determining the mechanical properties of rock mass：a comparative study[J]. Rock Mechanics and Rock Engineering，2010，43(3)：305-320.