岩石剪切破坏裂纹演化特征量化分析

doi:10.13722/j.cnki.jrme.2015.01.004

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摘要为深入研究岩石破坏过程表面裂纹演化规律，探讨表面裂纹与内部破裂之间的内在联系，对砂岩剪切过程中表面裂纹演化特征进行量化，分析砂岩剪切破坏表面裂纹演化模式，建立表面裂纹量化参数与应力状态和声发射特征之间的关系，并探讨含水状态对岩石剪切破坏表面裂纹量化参数的影响。研究结果表明：砂岩在剪切过程中伴随着表面雁行裂纹的形成与贯通，雁行裂纹宏观形态出现于破坏前的极短时间内，随后岩石发生剪切贯通；最大AE事件率总是出现在剪应力急剧下降来临之前极短时间内，且出现在表面裂纹非稳定快速扩展之前；饱水系数影响了表面裂纹出现的时间和相对于峰值剪应力的位置，随着饱水系数的增加，砂岩表面裂纹出现时间变早，最大瞬时贯通速度呈依次递减规律，贯通时间变长，表面裂纹快速扩展滞后时间呈明显增加趋势。

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关键词 ：岩石力学, 剪切破坏, 表面裂纹, 裂纹扩展, 量化参数

Abstract：In order to investigate the development of surface cracks and the intrinsic link between the surface cracks and the internal rupture in the process of rock failure，the developmental characteristics of surface cracks of rock during shear failure were quantitatively analyzed and relationships among the parameters describing the surface cracks，the stress state and the acoustic emission characteristics were established. Meanwhile，effects of water content on the parameters describing surface cracks upon shear failure were investigated. The results revealed that the echelon cracks accompanied with the formation and transfixion of surface cracks during shearing process and appeared for a very short period just before rock failure，then shear cracks penetrated through completely. The maximum rate of AE event appeared always for a very short period before the sharp drop of shear stress，and before the occurrence of the non-stable state of rapid propagation of surface cracks. The coefficient of saturation was found to affect the time and the position of occurrence of surface cracks relative to the peak shear stress. As the coefficient of saturation increased，the surface cracks occurred earlier，the maximum instantaneous transfixion velocity decreased，the transfixion time was longer and the time delay of the rapid propagation of surface cracks increased significantly.

Key words： rock mechanics shear failure surface cracks crack growth quantization parameters

收稿日期: 2014-01-17

引用本文:

程立朝1，2，许江1，冯丹1，田傲雪1，刘义鑫1. 岩石剪切破坏裂纹演化特征量化分析[J]. 岩石力学与工程学报, 2015, 34(01): 31-39.
CHENG Lichao1，2，XU Jiang1，FENG Dan1，TIAN Aoxue1，LIU Yixin1. QUANTITATIVE ANALYSIS ON DEVELOPMENT OF SURFACE CRACKS OF ROCKS UPON SHEAR FAILURE. , 2015, 34(01): 31-39.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2015.01.004 或 http://www.rockmech.org/CN/Y2015/V34/I01/31

[1]	KANATANI K I. Distribution of directional data and fabric tensors[J]. International Journal of Engineering Science，1984，22(2)：149-164. " target="_blank">
[3]	葛修润，任建喜，蒲毅彬，等. 岩石细观损伤扩展规律的CT实时试验[J]. 中国科学：E辑，2000，30(2)：104-111.(GE Xiurun，REN Jianxi，PU Yibin，et al. Real-time CT test on the meso-damage development law of rock[J]. Science in China：Series E，2000，30(2)：104-111.(in Chinese)) " target="_blank">
[4]	任建喜，葛修润，蒲毅彬，等. 岩石单轴细观损伤演化特性的CT实时分析[J]. 土木工程学报，2000，33(6)：99-104.(REN Jianxi，GE Xiurun，PU Yibin，et al. Real-time CT test on the meso-damage evolution of rock under uniaxial compression[J]. China Civil Engineering Journal，2000，33(6)：99-104.(in Chinese)) " target="_blank">
[6]	朱珍德，渠文平，蒋志坚. 岩石细观结构量化试验研究[J]. 岩石力学与工程学报，2007，26(7)：1 313-1 324.(ZHU Zhende，QU Wenping，JIANG Zhijian. Quantitative test study on mesostructure of rock[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(7)：1 313-1 324.(in Chinese)) " target="_blank">
[8]	雷涛，周科平，胡建华，等. 卸荷岩体力学参数劣化规律的细观损伤分析[J]. 中南大学学报：自然科学版，2013，44(1)：275-281.(LEI Tao，ZHOU Keping，HU Jianhua，et al. Mechanics parameters deterioration laws of unloading rock mass by mesodamage mechanics[J]. Journal of Central South University：Science and Technology，2013，44(1)：275-281.(in Chinese)) " target="_blank">
[10]	刘冬梅，蔡美峰，周玉斌，等. 岩石裂纹扩展过程的动态监测研究[J]. 岩石力学与工程学报，2006，25(3)：467-472.(LIU Dongmei，CAI Meifeng，ZHOU Yubin，et al. Dynamic monitoring on developing process of rock cracks[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(3)：467-472.(in Chinese))
[13]	许江，陆丽丰，杨红伟，等. 剪切荷载作用下砂岩细观开裂扩展演化特征研究[J]. 岩石力学与工程学报，2011，30(5)：944-950.(XU Jiang，LU Lifeng，YANG Hongwei，et al. Study of evolution law of microfracturing progress of sandstone under shear loading[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(5)：944-950.(in Chinese))
[14]	许江，程立朝，谭皓月，等. 原生裂纹对煤岩剪切破坏宏细观演化规律的影响研究[J]. 岩石力学与工程学报，2013，32(1)：33-40.(XU Jiang，CHENG Lichao，TAN Haoyue，et al. Effects of original cracks on macro-meso evolution law of coal shear failure[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(1)：33-40.(in Chinese))
[15]	许江，彭守建，尹光志，等. 含瓦斯煤岩细观剪切实验装置的研制及应用[J]. 岩石力学与工程学报，2011，30(4)：677-685.(XU Jiang，PENG Shoujian，Y1N Guangzhi，et al. Development of meso- shear test equipment for coal rock containing gas and its application[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(4)： 677-685.(in Chinese))
[16]	许江，吴慧，陆丽丰，等. 不同含水状态下砂岩剪切过程中声发射特性试验研究[J]. 岩石力学与工程学报，2012，31(5)：914-920.(XU Jiang，WU Hui，LU Lifeng，et al. Experimental study of acoustic emission characteristics during shearing process of sandstone under different moisture states[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(5)：914-920.(in Chinese))
[7]	张后全，贺永年，韩立军，等. 岩石破裂过程微裂纹演化规律有限元统计分析[J]. 中国矿业大学学报，2007，36(2)：166-171. (ZHANG Houquan，HE Yongnian，HAN Lijun，et al. Statistic analysis of the evolution laws of micro cracks in rock failure process by finite element method[J]. Journal of China University of Mining and Technology，2007，36(2)：166-171.(in Chinese)) " target="_blank">
[11]	刘冬梅，蔡美峰，周玉斌. 岩石细观损伤演化与宏观变形响应关联研究[J]. 中国钨业，2006，21(4)：16-19.(LIU Dongmei，CAI Meifeng，ZHOU Yubin，et al. Study on the relationship between mesodamage development and macrodeformation of rock under uniaxial compression[J]. China Tungsten Industry，2006，21(4)：16-19.(in Chinese)) " target="_blank">
[2]	赖勇，张永兴. 岩石宏、细观损伤复合模型及裂纹扩展规律研究[J]. 岩石力学与工程学报，2008，27(3)：534-542.(LAI Yong，ZHANG Yongxing. Study on macro-and meso-damage composite model of rock and crack propagation rule[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(3)：534-542.(in Chinese))
[5]	倪骁慧，朱珍德，赵杰，等. 岩石破裂全程数字化细观损伤力学试验研究[J]. 岩土力学，2009，30(11)：3 283-3 290.(NI Xiaohui，ZHU Zhende，ZHAO Jie，et al. Meso-damage mechanical digitalization test of complete process of rock failure[J]. Rock and Soil Mechanics，2009，30(11)：3 283-3 290.(in Chinese)) " target="_blank">
[9]	刘冬梅，谢锦平，周玉斌，等. 岩石压剪耦合破坏过程的实时监测研究[J]. 岩石力学与工程学报，2004，23(10)：1 616-1 620.(LIU Dongmei，XIE Jinping，ZHOU Yubin，et al. Real-time testing study of rock fracture under coupled compression and shear[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(10)：1 616-1 620.(in Chinese)) " target="_blank">
[12]	宋义敏，马少鹏，杨小彬，等. 岩石变形破坏的数字散斑相关方法研究[J]. 岩石力学与工程学报，2011，30(1)：170-175.(SONG Yimin，MA Shaopeng，YANG Xiaobin，et al. Experiment investigation on failure of rock by digital speckle correlation methods[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(1)：170-175.(in Chinese))