大理岩三轴压缩破坏的能量特征分析

刘天为; 何江达; 徐文杰

大理岩三轴压缩破坏的能量特征分析 English Version

1. 清华大学水沙科学与水利水电工程国家重点实验室，北京 100084; 2. 四川大学水利水电学院，四川成都 610065

详细信息

作者简介:
刘天为(1990– )，男，北京人，硕士，从事岩石力学与工程方面的研究。E-mail: liutianwei900325@163.com

中图分类号: TU45
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出版历程
- 收稿日期: 2012-04-17
- 发布日期: 2013-03-06

Energy properties of failure of marble samples under triaxial compression

1. State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing 10084, China; 2. School of Hydraulic and Hydroelectric Engineering, Sichuan University, Chengdu 610065, China

摘要

摘要: 岩石材料的变形和破坏与能量的变化密切相关。利用刚性伺服系统对大理岩岩样进行了系列三轴压缩试验，基于试验结果，对大理岩在加载过程中各阶段能量变化的具体数值进行了计算和整理，研究了能量变化在加载破坏各阶段分别与围压、应力、应变的内在联系。结果表明，初始围压的增大能够相当程度上提高岩样的破坏应变能。在既定围压下，岩样在弹性变形阶段的能量变化与偏应力和应变均成正线性关系。随着初始围压的增大，岩样所吸收的能量随偏应力变化的增长速率降低，随应变变化的增长速率加快。在三轴压缩过程中，岩样在弹性变形阶段所吸收的能量占总能量的比重较小，绝大部分能量耗散于岩样的屈服变形阶段；并且随着初始围压的增大，屈服变形阶段所吸收的能量占总能量的比重提高。
- 岩石力学 /
- 大理岩 /
- 三轴压缩破坏 /
- 能量分析 /
- 破坏应变能
Abstract: The deformation and failure of rock are closely relative to energy change. Experiments are carried out to investigate marble samples under triaxial compression by means of the servo-controlled testing machine. Based on the experimental results, the energy numerical variable is calculated and interpreted, and the internal relations among energy numerical variable, confining pressure, stress and strain are studied and compared. The results show that the failure strain energy of marble samples increases to a considerable extent as the confining pressure increases. The energy change has a positive linear relation with the stress and strain respectively of marble samples under vested confining pressure. With the increase of the confining pressure, the slope of energy change-deviatoric stress curve reduces, and the slope of energy change-strain curve accelerates. In the triaxial compression process, the amount of energy change at the elastic deformation stage takes a small proportion of the total energy change. Most of the energy dissipates at the yield deformation stage. At the same time, the amount of energy change at the yield deformation stage takes a greater proportion in the total energy change as the confining pressure increases.
- rock mechanics /
- marble /
- triaxial compression failure /
- energy analysis /
- failure strain energy

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参考文献(16)

[1]	钱七虎. 深部地下工程空间开发中的关键科学问题[C]// 钱七虎院士论文选集深部地下空间开发中的基础研究关键技术问题. [S.l.]：[s．n.], 2007:549-568. (QIAN Qi-hu. The key problems of deep underground space development[C]// Selections from Academician QIAN Qihu's Theses-the key Technical Problems of Base Research in Deep Underground Space Development．[S. l. ]：[s．n.], 2007:549-568. (in Chinese))
[2]	王明洋,周泽平,钱七虎. 深部岩体的构造和变形与破坏问题[J]. 岩石力学与工程学报, 2006,25(3):448-455. (WANG Ming-yang, ZHOU Ze-ping, QIAN Qi-hu. Tectonic, deformation and failure problems of deep rock mass[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(3): 448-455. (in Chinese))
[3]	何满潮,谢和平,彭苏萍,等. 深部开采岩体力学研究[J]. 岩石力学与工程学报, 2005,24(16):2803-2813. (HE Man-chao, XIE He-ping, PENG Su-ping, et al. Study on rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(16)
[4]	周宏伟,谢和平,左建平. 深部高地应力下岩石力学行为研究进展[J]. 力学进展, 2005,35(1):91-99. (ZHOU Hong-wei, XIE He-ping, ZUO Jian-ping. Developments in researches on mechanical behaviors of rocks under the condition of high ground pressure in the depths[J]. Advances in Mechanics, 2005, 35(1): 91-99. (in Chinese))
[5]	王明洋,戚承志,钱七虎. 深部岩体块系介质变形与运动特性研究[J]. 岩石力学与工程学报, 2005,24(16):2825-2830. (WANG Ming-yang, QI Cheng-zhi, QIAN Qi-hu. Study on deformation and motion characteristics of blocks in deep rock mass[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(16): 2825-2830. (in Chinese))
[6]	王贤能,黄润秋. 岩石卸荷破坏特征与岩爆效应[J]. 山地研究, 1998,16(4):281-285. (WANG Xian-neng, HUANG Run-qiu. Analysis of deformation and fracture features of rock under unloading condition and their effection rock burst[J]. Mountain Research, 1998, 16(4): 281-285. (in Chinese))
[7]	高玉春,徐进,何鹏. 大理岩加卸载力学特性的研究[J]. 岩石力学与工程学报, 2005,24(3):456-460. (GAO Yu-chun, XU Jin, HE Peng. Study on mechanical properties of marble under loading and unloading conditions[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(3)
[8]	JOSÉ A Sanchidrian, PABLO Segarra, LINA M López. Energy components in rock blasting [J]. Rock Mechanics and Mining Sciences, 2007,44(1):130-147.
[9]	陈卫忠,刘豆豆,杨建平. 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):2214-2220. (CHEN Wei-zhong, LIU Dou-dou, YANG Jian-ping. Power function based Mohr strength criterion for marble with unloading confining pressures[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(11): 2214-2220. (in Chinese))
[10]	谢和平,彭瑞东,鞠杨. 岩石变形破坏过程中的能量耗散分析[J]. 岩石力学与工程学报, 2004,23(21):3565-3570. (XIE He-ping, PENG Rui-dong, JU Yang. Energy dissipation of rock deformation and fracture[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(21)
[11]	谢和平,鞠杨,黎立云. 基于能量耗散与释放原理的岩石强度与整体破坏准则[J]. 岩石力学与工程学报, 2005,24(17):3003-3010. (XIE He-ping, JU Yang, LI Li-yun. Criteria for strength and structural failure of rocks based on energy dissipation and energy release principles[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(17): 3003-3010. (in Chinese))
[12]	谢和平,彭瑞东,鞠杨,等. 岩石破坏的能量分析初探[J]. 岩石力学与工程学报, 2005,24(15):2604-2608. (XIE He-ping, PENG Rui-dong, JU Yang, et a1. On energy analysis of rock failure[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(15)
[13]	尤明庆,华安增. 岩石试样破坏过程的能量分析[J]. 岩石力学与工程学报, 2002,21(6):778-781. (YOU Ming-qing, HUA An-zeng. Energy analysis of failure process of rock specimens[J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(6): 778-781. (in Chinese))
[14]	尤明庆. 岩石的力学性质[M]. 北京: 地质出版社, 2007.(YOU Ming-qing. Mechanical properties of rocks[M]. Beijing: Geological Publishing House, 2007. (in Chinese))
[15]	杨圣奇,徐卫亚,苏承东. 岩样单轴压缩变形破坏与能量特征研究[J]. 固体力学学报, 2006,27(2):213-216. (YANG Sheng-qi, XU Wei-ya, SU Cheng-dong. Study on deformation failure and energy properties of rock specimen in uniaxial compression[J]. Acta Mechanica Solida Sinica, 2006, 27(2): 213-216. (in Chinese))
[16]	杨圣奇,徐卫亚,苏承东. 大理岩三轴压缩变形破坏与能量特征研究[J]. 工程力学, 2007,24(1):136-141. (YANG Sheng-qi, XU Wei-ya, SU Cheng-dong. Study on deformation failure and energy properties of marble specimen under triaxial compression[J]. Engineering Mechanics, 2007, 24(1): 136-141. (in Chinese))