基于三维形貌特征的岩石节理峰值剪切强度准则研究

孙辅庭; 佘成学; 万利台; 蒋庆仁

doi:10.11779/CJGE201403016

基于三维形貌特征的岩石节理峰值剪切强度准则研究 English Version

1. 武汉大学水资源与水电工程科学国家重点实验室,湖北武汉 430072; 2. 中国水电顾问集团贵阳勘测设计研究院,贵州贵阳 550000

基金项目: 国家自然科学基金项目（51079108）; 中央高校基本科研业务费专项资金项目（2012206020208）

详细信息

作者简介:
孙辅庭(1987- )，男，博士研究生，主要从事岩石结构工程和水工结构工程的研究。E-mail: 353936165@qq.com。

中图分类号: TU45
计量
- 文章访问数: 479
- HTML全文浏览量: 21
- PDF下载量: 599
出版历程
- 收稿日期: 2013-06-15
- 发布日期: 2014-03-19

Peak shear strength criterion for rock joints based on three-dimensional morphology characteristics

1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2. Hydro China Guiyang Engineering Corporation, Guiyang 550000, China

摘要

摘要: 引入3个在一定范围内独立于测量尺度的三维形貌参数表征岩石节理形貌,并基于形貌参数建立了新的岩石节理峰值剪切强度准则。同时采用新准则和Barton公式计算了23对岩石节理的峰值剪切强度并与室内直剪试验结果对比,新准则的计算值与试验结果较为接近而Barton公式在一定程度上低估了节理剪切强度,表明新准则能更好地描述节理峰值剪切强度。新准则的三维形貌参数反映了不同形貌特征对剪切强度的贡献,物理意义明确,并且形貌参数可在一定范围内采用任意尺度测量,因而有利于新准则的工程应用。进一步分析表明：在规则齿形节理情况下,新准则可退化到Patton公式的形式,因而新准则实质是Patton公式的三维推广。
- 岩石力学 /
- 节理 /
- 峰值剪切强度 /
- 节理形貌 /
- 直剪试验
Abstract: Three 3D morphology parameters independent of measurement scale within limits are introduced to characterize the morphology characteristics of rock joints, and a new peak shear strength criterion for the rock joints is developed based on the morphology parameters. Then, both the new criterion and Barton’s criterion are adopted to calculate the peak shear strength of 23 pairs of rock joints. By comparing the calculated and tested peak shear strengths, the new criterion is proved to be more reasonable, while the peak shear strength calculated by Barton’s formula is underestimated. The new criterion has a clear physical meaning because the contribution of different morphology characteristics to the peak shear strength is represented in detail by the three morphology parameters, and it is also convenient for the new criterion to be applied to engineering practice since the morphology parameters can be measured by any scale within some limits. Furthermore, the new criterion is essentially the generalized 3D form of Patton’s criterion as it can be simplified to Patton’s formula when applied to regular joints.
- rock mechanics /
- joint /
- peak shear strength /
- joint morphology /
- direct shear test

HTML全文

参考文献(18)

[1]	PATTON F D. Multiple modes of shear failure in rock[C]// Proc First Congress of International Society of Rock Mechanics. Lisbon, 1966: 509-513.
[2]	BARTON N. Review of a new shear strength criterion for rock joints[J]. Engineering Geology, 1973, 7(4): 287-332.
[3]	BARTON N, CHOUBEY V. The shear strength of rock joints in theory and practice[J]. Rock Mechanics, 1977, 10(1-2): 1-54.
[4]	LADANYI B, ARCHAMBAULT G. Simulation of shear behaviour of a jointed rock mass[C]// The 11th US Symposium on Rock Mechanics(USRMS). Berkeley, 1969: 105-125.
[5]	SCHNEIDER H J. The friction and deformation behaviour of rock joints[J]. Rock Mechanics, 1976, 8(3): 169-184.
[6]	MAKSIMOVIC M. The shear strength components of a rough rock joint[J]. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1996, 33(8): 769-783.
[7]	ZHAO J. Joint surface matching and shear strength part B: JRC-JMC shear strength criterion[J]. International Journal of Rock Mechanics and Mining Sciences, 1997, 34(2): 179-185.
[8]	KULATILAKE P, SHOU G, HUANG T H, et al. New peak shear strength criterion for anisotropic rock joints[J]. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abastracts, 1996, 32(7): 673-697.
[9]	GRAASSELLI G, WIRTH J, EGGER P. Quantitative three-dimensional description of a rough surface and parameter evolution with shearing[J]. International Journal of Rock Mechanics and Mining Sciences. 2002, 39(6): 789-800.
[10]	GRASSELLI G. Shear strength of rock joints based on quantified surface description[J]. Rock Mechanics and Rock Engineering, 2006, 39(4): 295-314.
[11]	COTTRELL B. Updates to the GG-shear strength criterion: M Eng[D]. Toronto: University of Toronto, 2009.
[12]	夏才初, 唐志成, 宋英龙. 基于三维形貌参数的耦合节理峰值抗剪强度公式[J]. 岩石力学与工程学报, 2013, 32(增刊1): 2834-2839. (XIA Cai-chu, TANG Zhi-cheng, SONG Ying-long. A new peak shear strength formular for matching irregular joints based on 3D morphology parameters[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(S1): 2834-2839. (in Chinese))
[13]	唐志成, 夏才初, 宋英龙. 粗糙节理的峰值抗剪强度准则[J]. 岩土工程学报, 2013, 35(3): 571-577. (TANG Zhi-cheng, XIA Cai-chu, SONG Ying-long. New peak shear strength criterion for roughness joints[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(3): 571-577. (in Chinese))
[14]	RE F, SCAVIA C. Determination of contact areas in rock joints by X-ray computer tomography[J]. International Journal of Rock Mechanics and Mining Sciences, 1999, 36: 883-890.
[15]	BELEM T, HOMAND-ETIENNE F, SOULEY M. Quantitative parameters for rock joint surface roughness[J]. Rock Mechanics and Rock Engineering, 2000, 33(4): 217-242.
[16]	MANDELBROT B B. The fractal geometry of nature[M]. New York: Freeman W H, 1982.
[17]	TSE R, CRUDEN D M. Estimating joint roughness coefficients[J]. Int J Rock Mech Min Sci & Geomech, 1979, 16: 303-307.
[18]	JING L. Numerical modeling of jointed rock masses by distinct element method for two, and three dimensional problems[D]. Lulea: Lulea University of Technology, 1990.