基于三维形貌参数的偶合节理峰值抗剪强度公式

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (837 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要节理表面形貌是影响节理峰值抗剪强度的重要因素，采用人工模拟材料节理分别在0.5，1.0，1.5，2.0，3.0 MPa的法向应力下进行直剪试验，研究三维形貌参数与峰值抗剪强度之间的关系。选用节理面有效三维平均倾角、粗糙度系数、最大可能接触面积比作为表征节理面粗糙度的参数。直剪试验前、后采用TJXW–3D型便携式岩石表面形貌测量仪对节理表面进行形貌数据测试；根据直剪试验结果建立节理峰值剪胀角与三维形貌参数，，之间的关系；建议采用新的强度准则计算节理的峰值抗剪强度。新公式的计算结果与试验值具有较好的一致性，并将其与Barton公式的计算结果进行比较，可知Barton公式的计算结果低于试验实测值。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：岩石力学, 节理, 峰值抗剪强度, 三维形貌参数

Abstract：Joint surface morphology is one of the most important factors for peak shear strength of jointed rock. Artificial joints are used for direct shear tests under five levels of normal stresses，i. e. 0.5，1.0，1.5，2.0，3.0 MPa，to study the relationship between 3D morphology parameters and peak shear strength. Effective joint surface 3D mean angle ，surface roughness coefficient and the maximum possible contact area ratio are selected to describe the joint roughness. Scanning joint surface after each direct shear tests by TJXW–3D topography scanner and the above selective morphology parameters are calculated. A new peak shear dilation angle model is proposed with relationship to 3D morphology parameters of ，， . Then，a new strength criterion with three morphology parameters is suggested for modeling the peak shear strength of rock joints. A comparison between the proposed models and the experimental results show a relatively good agreement. At last，the calculated results by the new criterion is compared to the well-known Barton?s criterion. It is shown that Barton?s criterion underestimates the observed peak strength.

Key words： rock mechanics joints peak shear strength 3D morphology parameters

收稿日期: 2011-10-08

引用本文:

夏才初1，2，3，唐志成2，3，宋英龙2，3. 基于三维形貌参数的偶合节理峰值抗剪强度公式[J]. 岩石力学与工程学报, 2013, 32(s1): 2833-2839.
XIA Caichu1，2，3，TANG Zhicheng2，3，SONG Yinglong2，3. A NEW PEAK SHEAR STRENGTH FORMULA FOR MATCHING IRREGULAR JOINTS BASED ON 3D MORPHOLOGY PARAMETERS. , 2013, 32(s1): 2833-2839.

链接本文:

http://www.rockmech.org/CN/Y2013/V32/Is1/2833

[5]	KULATILAKE P H S W，SHOU G，HUANG T H，et al. New peak shear strength criteria for anisotropic rock joints[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1995，32(7)：673-697. " target="_blank">
[9]	SON B K，LEE Y K，LEE C I. Elasto-plastic simulation of a direct shear test on rough rock joints[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(3)：425.
[14]	GRASSELLI G. Shear strength of rock joints based on quantified surface description[Ph. D. Thesis][D]. Switzerland：Swiss Federal Institute of Technology，2001. " target="_blank">
[18]	LEE S W，HONG E S，BAE S I，et al. Modeling of rock joint shear strength using surface roughness parameter，Rs[J]. Tunnelling and Underground Space Technology，2006，21(2)：239. " target="_blank">
[23]	BARTON N，BANDIS S C. Review of predictive capabilities of JRC-JCS model in engineering practice[C]// Proceedings of International Conference on Rock Joints. Rotterdam：A. A. Balkema，1990：603-610. " target="_blank">
[1]	PATTON F D. Multiple modes of shear failure in rock[C]// Proceedings of the First Congress of International Society of Rock Mechanics. Lisbon，Portugal：[s. n.]，1966：509-513. " target="_blank">
[3]	BARTON N，CHOUBEY V. The shear strength of rock joints in theory and practice[J]. Rock Mechanics and Rock Engineering，1977，10(1/2)：1-54. " target="_blank">
[4]	JING L. Numerical modeling of jointed rock masses by distinct element method for two，and three dimensional problems[Ph. D. Thesis][D]. Sweden，Lulea：Lulea University of Technology，1990. " target="_blank">
[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. " target="_blank">
[11]	VA?SA?RHELYI B. Influence of normal load on joint dilatation rate[J]. Rock Mechanics and Rock Engineering，1998，31(2)：117-123. " target="_blank">
[13]	李庆松，杜守继. 经历剪切变形历史的岩石节理表面粗糙特性分析[J]. 岩土力学，2004，25(6)：850-855.(LI Qingsong，DU Shouji. Surface roughness analysis of rock joint under different shear deformation histories[J]. Rock and Soil Mechanics，2004，25(6)：850-855.(in Chinese)) " target="_blank">
[17]	夏才初，孙宗颀. 工程岩体节理力学[M]. 上海：同济大学出版社，2002：18-26.(XIA Caichu，SUN Zongqi. Engineering rock mass joint mechanics[M]. Shanghai：Tongji University Press，2002：18-26.(in Chinese)) " target="_blank">
[21]	BELEM T，HOMAND F，SOULEY M. Quantitative parameters for rock joint surface roughness[J]. Rock Mechanics and Rock Engineering，2000，33(4)：217-242.
[22]	YANG Z Y，LO S C，DI C C. Reassessing the joint roughness coefficient(JRC) estimation using Z2[J]. Rock Mechanics and Rock Engineering，2001，24(3)：243-251. " target="_blank">
[16]	王伟. 不同接触状态下节理应力-渗流耦合特性的研究[博士学位论文][D]. 上海：同济大学，2009.(WANG Wei. Study on coupled characteristic for stress and seepage of rock joints under different contact conditions[Ph. D. thesis][D]. Shanghai：Tongji University，2009.(in Chinese)) " target="_blank">
[10]	LADANYI B，ARCHAMBAULT G. Simulation of the shear behavior of a jointed rock mass[C]// Proceedings of the 11th US Symposium on Rock Mechanics. Berkeley，USA：[s. n.]，1970：105-125. " target="_blank">
[15]	唐志成，夏才初，宋英龙，等. 人工模拟节理峰值剪胀模型及峰值抗剪强度分析[J]. 岩石力学与工程学报，2012，31(增1)：3 038-3 044. (TANG Zhicheng，XIA Caichu，SONG Yinglong，et al. Model of peak dilation angle and peak shear strength of artificial joint[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(Supp.1)：3 038-3 044.(in Chinese)) " target="_blank">
[19]	TSE R，CRUDEN D M. Estimating joint roughness coefficients[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1979，16(5)：303-307 " target="_blank">
[2]	SCHNEIDER H J. The friction and deformation behavior of rock joints[J]. Rock Mechanics and Rock Engineering，1976，8(3)：169-185. " target="_blank">
[6]	ZHAO J. Joint surface matching and shear strength part a：joint matching coefficient(JMC)[J]. International Journal of Rock Mechanics and Mining Sciences，1997，34(2)：173-178. " target="_blank">
[8]	赵坚. 岩石节理剪切强度的JRC-JMC新模型[J]. 岩石力学与工程学报，1998，17(4)：349-357.(ZHAO Jian. A new shear strength criterion for rock joint[J]. Chinese Journal of Rock Mechanics and Engineering，1998，17(4)：349-357.(in Chinese))
[12]	BEER A J，STEAD D，COGGAN J S. Estimation of the joint roughness coefficient(JRC) by visual comparison[J]. Rock Mechanics and Rock Engineering，2002，35(1)：65-74.
[20]	HONG E S，LEE J S，LEE I M. Underestimation of roughness in rough rock joints[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2008，32(11)：1 385-1 403. " target="_blank">