硬质岩石卸荷破坏特性试验研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (294 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要对硬质灰岩进行加轴压、卸围压试验，研究卸荷应力路径对其力学性质的影响，结合试验数据分析5种强度准则描述岩石卸荷破坏的适用性。Mohr-Coulomb强度准则和Hoek-Brown强度准则回归效果较差，考虑中间主应力影响的Drucker-Prager强度准则和Mogi-Coulomb强度准则回归效果较好，并且Mogi-Coulomb强度准则回归效果优于Drucker-Prager强度准则，抛物线型强度准则对高围压下的试验结果回归较好。岩石卸荷破坏发生强烈的体积扩容，从描述体积应变变化的角度对岩石卸荷破坏本构模型进行修正，理论模型结果与试验结果吻合较好。

	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, 硬质岩石, 卸荷, 强度准则, 本构模型

Abstract：The triaxial unloading tests of hard limestone are carried out. The mechanical properties changing with unloading stress path are studied. Five strength criteria are studied based on experimental results. Mohr-Coulomb criterion and Hoek-Brown criterion don?t describe the strength property of rock unloading failure. Drucker-Prager criterion and Mogi-Coulomb criterion fit experimental results very well. Mogi-Coulomb criterion fits experimental results better than Drucker-Prager criterion by comparison. The parabolic criterion is the best choice if the failure confining pressure is high. A rock unloading failure constitutive model is modified for describing the characteristic of volumetric strain. The theoretical model agrees well with experimental results.

Key words： rock mechanics hard rock unloading strength criterion constitutive model

收稿日期: 2011-05-19

引用本文:

张黎明，王在泉，石磊. 硬质岩石卸荷破坏特性试验研究[J]. 岩石力学与工程学报, 2011, 30(10): 2012-2018.
ZHANG Liming，WANG Zaiquan，SHI Lei. EXPERIMENTAL STUDY OF HARD ROCK FAILURE CHARACTERISTIC UNDER UNLOADING CONDITION. , 2011, 30(10): 2012-2018.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2011/V30/I10/2012

[1]	哈秋舲. 岩石边坡工程与卸荷非线性岩石(体)力学[J]. 岩石力学与工程学报，1997，16(4)：386-391.(HA Qiuling. Rock slope engineering and unloading nonlinear rock mass mechanics[J]. Chinese Journal of Rock Mechanics and Engineering，1997，16(4)：386-391.(in Chinese))
[2]	WU F Q，LIU T，LIU J Y，et al. Excavation unloading destruction phenomena in rock dam foundations[J]. Bulletin of Engineering Geology and the Environment，2009，68(2)：257-262.
[3]	邱士利，冯夏庭，张传庆，等. 不同卸围压速率下深埋大理岩卸荷力学特性试验研究[J]. 岩石力学与工程学报，2010，29(9)：1 807- 1 817.(QIU Shili，FENG Xiating，ZHANG Chuanqing，et al. Experimental research on mechanical properties of deep-buried marble under different unloading rates of confining pressures[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(9)：1 807-1 817.(in Chinese))
[4]	陈卫忠，刘豆豆，杨建平，等. 大理岩卸围压幂函数型Mohr强度特性研究[J]. 岩石力学与工程学报，2008，27(11)：2 214-2 220. (CHEN Weizhong，LIU Doudou，YANG Jianping，et al. Power function based Mohr strength criterion for marble with unloading confining pressures[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(11)：2 214-2 220.(in Chinese))
[5]	吕颖慧，刘泉声，胡云华. 基于花岗岩卸荷试验的损伤变形特征及其强度准则[J]. 岩石力学与工程学报，2009，28(10)：2 096-2 103. (LU Yinghui，LIU Quansheng，HU Yunhua. Damage deformation characteristics and its strength criterion based on unloading experiments of granites[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(10)：2 096-2 103.(in Chinese))
[6]	吴刚，孙钧. 复杂应力状态下完整岩体卸荷破坏的损伤力学分析[J]. 河海大学学报，1997，25(3)：44-49.(WU Gang，SUN Jun. Damage mechanical analysis of unloading failure of intact rock mass under complex stress state[J]. Journal of Hohai University，1997，25(3)：44-49.(in Chinese))
[7]	赵明阶，许锡宾，徐蓉. 岩石在三轴加卸荷过程中的一种本构模型研究[J]. 岩石力学与工程学报，2002，21(10)：626-631.(ZHAO Mingjie，XU Xibin，XU Rong. Constitutive model of rock under triaxial loading and unloading[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(10)：626-631.(in Chinese)) " target="_blank">
[8]	周小平，哈秋舲，张永兴，等. 峰前围压卸荷条件下岩石的应力-应变全过程分析和变形局部化研究[J]. 岩石力学与工程学报，2005，24(18)：3 236-3 244.(ZHOU Xiaoping，HA Qiuling，ZHANG Yongxing，et al. Analysis of localization of deformation and complete stress-strain relation for mesoscopic heterogenous brittle rock materials when axial stress is held constant while lateral confinement is reduced[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(18)：3 236-3 244.(in Chinese)) " target="_blank">
[9]	黄润秋，黄达. 卸荷条件下岩石变形特征及本构模型研究[J]. 地球科学进展，2008，23(5)：441-447.(HUANG Runqiu，HUANG Da. Characteristics and constitutive model of rock on the condition of unloading[J]. Advances in Earth Science，2008，23(5)：441-447.(in Chinese))
[10]	CANTIENI L，ANAGNOSTOU G. The effect of the stress path on squeezing behavior in tunneling[J]. Rock Mechanics and Rock Engineering，2009，42(2)：289-318.
[11]	李宏哲，夏才初，肖维民. 锦屏水电站大理岩加卸荷本构模型研究[J]. 岩石力学与工程学报，2010，29(7)：1 489-1 495.(LI Hongzhe，XIA Caichu，XIAO Weimin. Research on constitutive model of marble of Jinping hydropower station under loading and unloading conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(7)：1 489-1 495.(in Chinese))
[12]	王在泉，张黎明，孙辉，等. 不同卸荷速度条件下灰岩力学特性的试验研究[J]. 岩土力学，2011，32(4)：1 045-1 050.(WANG Zaiquan，ZHANG Liming，SUN Hui，et al. Experimental study of mechanical properties of limestone under different unloading velocities[J]. Rock and Soil Mechanics，2011，32(4)：1 045-1 050.(in Chinese))
[13]	郑颖人，孔亮. 岩土塑性力学[M]. 北京：中国建筑工业出版社，2010：192-225.(ZHENG Yingren，KONG Liang. Geotechnical plastic mechanics[M]. Beijing：China Architecture and Building Press，2010：192-225.(in Chinese)) " target="_blank">
[14]	尤明庆. 岩石强度准则的数学形式和参数确定的研究[J]. 岩石力学与工程学报，2010，29(11)：2 172-2 184.(YOU Mingqing. Study of mathematical equation and parameter determine of strength criteria for rock[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(11)：2 172-2 184.(in Chinese))
[15]	PARISEAU W G. Fitting failure criteria to laboratory strength tests[J]. International Journal of Rock Mechanics and Mining Sciences，2007，44(4)：637-646.
[16]	YOU M Q. True triaxial strength criteria for rock[J]. International Journal of Rock Mechanics and Mining Sciences，2009，46(11)：115-127. " target="_blank">
[17]	WENG M C，JENG F S，HSIEH Y M，et al. A simple model for stress-induced anisotropic softening of weak sandstones[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(2)：155-166.