砂岩双面剪切细观损伤特性试验研究

doi:10.13722/j.cnki.jrme.2014.0575

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Abstract

Using independent developmental coal-rock microscopic shear testing device，the shear tests under different loading rates were carried out. An in-depth research on micro-crack propagation process and micro-crack extension space distribution was conducted by the acoustic emission technique as well as image processing technique. The result shows that the shear strength of sandstone increases with the increase of the loading rate，and presenting a linear relation. For double sheared sandstone，crack propagation and penetration on both sides are not synchronized，and the growth of micro fissure on the one side became more rapid because of the stress concentration caused by the crack damage on the other side. The formation time of penetrating main crack shortened greatly. The micro-crack initiation positions which were generally located at a point or points near the pre-shear plane extended in the vertical direction substantially. Meanwhile，the closer micro-cracks interacted with each other until penetrating to a whole crack. During the process of micro-crack propagation of sandstone，the vertical micro-cracks turned into lateral bifurcation cracks，and the micro-cracks which are perpendicular to the vertical direction stopped expansion. The failure modes are detour，pinning，holding bifurcation，induced bifurcation，hack，stop detour，hook back etc.，mainly detour and pinning.

Key words： rock mechanics acoustic emission double shear microscopic

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	Articles by authors
	XU Jiang1
	2
	TIAN Aoxue1
	2
	CHENG Lichao1
	2
	FENG Dan1
	2
	LIU Yixin1
	2

Cite this article:

XU Jiang1,2,TIAN Aoxue1, et al. EXPERIMENTAL RESEARCH ON MESO-DAMAGE CHARACTERISTIC OF DOUBLE SHEARED SANDSTONE[J]. , 2015, 34(S2): 3642-3651.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.0575 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/3642

[1]	蔡美峰，何满潮，刘东燕. 岩石力学与工程[M]. 北京：科学出版社，2002：12-17.(CAI Meifeng，HE Manchao，LIU Dongyan. Rock mechanics and engineering[M]. Beijing：Science Press，2002：12-17.(in Chinese))
[2]	SAEB S，AMADEI B. Modeling rock joints under shear and normal loading[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1992，29(3)：267-278.
[3]	凌建明，孙钧. 脆性岩石的细观裂纹损伤及其时效特征[J]. 岩石力学与工程学报，1993，12(4)：304-312.(LING Jianming，SUN Jun. On mesocrack damage of brittle rocks and its time-dependent characteristics[J]. ChineseJournal of Rock Mechanics and Engineering，1993，12(4)：304-312.(in Chinese))
[4]	凌建明. 压缩荷载条件下岩石细观损伤特征的研究[J].同济大学学报，1993，21(2)：219-226.(LING Jianming.Study on the mesoscopical characteristics of rock damage under compressive loading[J].Journal of Tongji University，1993，21(2)：219-226.(in Chinese))
[5]	刘冬梅，龚永胜，谢锦平，等. 压剪应力作用下岩石变形破裂全程动态监测研究[J]. 南方冶金学院学报，2003，24(5)：69-72.(LIU Dongmei，GONG Yongsheng，XIE Jinping，et al.Wholly dynamictesting study of rock deformation and fracture under compressive and shearing stress[J].Journal of Southern Institute of Metallurgy，2003，24(5)：69-72.(in Chinese))
[6]	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))
[7]	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))
[8]	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. Study on the relationship between mesodamagedevelopment and macrodeformation of rock under uniaxial compression[J]. China TungstenIndustry，2006，21(4)：16-19.(in Chinese))
[9]	李炼，李启光，徐钺，等. 一种用于岩石材料微裂纹观察的复型技术[J]. 岩石力学与工程学报，2002，21(6)：797-802.(LI Lian，LI Qiguang，XU Yue. Replica Technique for micro-crack observation of rocks[J]. Journal of rock mechanics and engineering，2002，21(6)：797-802.(in Chinese))
[10]	李炼，徐钺，李启光，等. 花岗岩板渐进破坏过程的微观研究[J]. 岩石力学与工程学报，2002，21(7)：940-947.(LI Lian，TSUI Yue，LI Qiguang，et al. Progressive crackingof granite plate under uniaxial compression[J]. ChineseJournal of Rock Mechanics and Engineering，2001，20(7)：940-947.(in Chinese))
[11]	WONG R H C，CHAU K T，TSOI P M，etal. Pattern of coalescence of rock bridge between two joints under shear testing[C]// The 9th International Congress on Rock Mechanics.Paris：[s.n.]，1999：735-738.
[12]	TSUYOSHI I，TADASHI K，YUJI K. Source distribution of acousticemissions during an in-situ direct shear test：implications for an analogmodel of seismogenic faulting in an inhomogeneous rock mass[J]. Engineering Geology，2010，110(3/4)：66-76.
[13]	MORADIAN Z A，BALLIVY G，RIVARD P，et al. Evaluatingdamage during shear tests of rock joints using acoustic emissions[J].International Journal of Rock Mechanics and Mining Sciences，2010，47(4)：590-598.
[14]	许江，彭守建，尹光志，等. 含瓦斯煤岩细观剪切试验装置的研制及应用[J]. 岩石力学与工程学报，2011，30(4)：677-685.(XUJiang，PENG Shoujian，YIN Guangzhi，et al. Development of meso-sheartest equipment for coal rock containing gas and its application[J].Chinese Journal of Rock Mechanics and Engineering，2011，30(4)：677-685.(in Chinese))
[15]	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))
[16]	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 onmicro-meso evolution law of coal shear failure[J]. ChineseJournal of Rock Mechanics and Engineering，2013，32(1)：33-40.(in Chinese))
[17]	李根，唐春安，李连崇. 水岩耦合变形破坏过程及机制研究进展[J].力学进展，2012，42(5)：593-619.(LI Gen，TANG Chun′an，LI Lianchong.Advances in rock deformation and failure process under water-rock coupling[J]. Advances in Mechanics，2012，42(5)：593-619.(in Chinese))