Experimental study on deformation and strength characteristics of diabase containing natural weak plane by acoustic emission
WANG Qiang1，2，ZHOU Yangyi1，2，LI Yuanhui1，2，ZHANG Fengpeng1，2
(1. Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines，Northeastern University，Shenyang，Liaoning 110819，China；2. College of Resources and Civil Engineering，Northeastern University，Shenyang，Liaoning 110819，China)
Abstract：Aiming at the problem of jointed rock mass with different angles in the stope roof of Hongtoushan Copper Mine，the acoustic emission test of diabase specimens with natural weak faces was carried out under uniaxial compression. Research results have shown that：(1) The diabase specimens with longitudinal weak plane have higher strength than those with transverse weak plane，and the oblique weak plane with triangle is the lowest compressive strength. Under the same stress，the axial strain of the specimen with longitudinal weak penetration will change less than that of the complete specimen，while the axial strain of the specimen with transverse weak penetration will change more than that of the complete specimen，while the transverse strain will change opposite；(2) The complete specimens and the specimens with natural transverse weak surfaces are brittle fractured failure under compression，the specimens with longitudinal weak surfaces are tensile failured along weak surfaces under compression，and the specimens with oblique triangular weak surfaces are shear failured along weak surfaces；(3) Acoustic emission signals of diabase specimens with longitudinal weak face are similar to those of complete specimens when compressed. Acoustic emission signals of diabase specimens with oblique triangle weak face are very active，and the impact rate of specimens has several peak stages. Acoustic emission signals are more active in the case of weak cross-section with double cross-section under compression than in the case of weak cross-section with single cross-section；(4) This test can provide guidance for excavation and support of rock mass with structural planes in stope. The research results can reflect the loading deformation and strength characteristics and failure modes of rock mass with different weak faces.
[1] 刘国锋，冯夏庭，江 权，等. 白鹤滩大型地下厂房开挖围岩片帮破坏特征、规律及机制研究[J]. 岩石力学与工程学报，2016，35(5)：865–878.(LIU Guofeng，FENG Xiating，JIANG Quan，et al. Failure characteristics，laws and mechanisms of rock spalling in excavation of large-scale underground power house caverns in Baihetan experimental study and analysis of shear-flow coupling behaviors of rock joints[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(5)：865–878.(in Chinese))
[2] 蒋金泉，曲 华，刘传孝. 巷道围岩弱结构灾变失稳与破坏区域形态的奇异性[J]. 岩石力学与工程学报，2005，24(18)：3 373–3 379. (JIANG Jinquan，QU Hua，LIU Chuanxiao. Research on failure of soft structure and singularity of failure zone of road way surrounding rock[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(18)：3 373–3 379.(in Chinese))
[3] 王益壮，李晓昭，章杨松，等. 含厚层软弱夹层硬质围岩的变形破坏特性[J]. 防灾减灾工程学报，2011，31(4)：441–448.(WANG Yizhuang，LI Xiaozhao，ZHANG Yangsong，et al. Deformation and failure characteristics of hard surrounding rock with thick weak interlayer[J]. Journal of Disaster Prevention and Mitigation Engineering，2011，31(4)：441–448.(in Chinese))
[4] 张 农，李桂臣，许兴亮. 顶板软弱夹层渗水泥化对巷道稳定性的影响[J]. 中国矿业大学学报，2009，38(6)：757–763.(ZHANG Nong，LI Guichen，XU Xingliang. The effect of cementing on the stability of roadways with weak roof interlayer[J]. Journal of China University of Mining and Technology，2009，38(6)：757–763.(in Chinese))
[5] 袁 亮，薛俊华，刘泉声，等. 煤矿深部岩巷围岩控制理论与支护技术[J]. 煤炭学报，2011，36(4)：535–543.(YUAN Liang，XUE Junhua，LIU Quansheng，et al. Surrounding rock stability control theory and support technique in deep rock roadway for coal mine[J]. Journal of China Coal Society，2011，36(4)：535–543.(in Chinese))
[6] 凌建明，蒋爵光，傅永胜. 非贯通裂隙岩体力学特性的损伤力学分析[J]. 岩石力学与工程学报，1992，11(4)：373–383.(LING Jianming，JIANG Jueguang，FU Yongsheng. Damage mechanics analysis of mechanical properties of non-penetrating fractured rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，1992，11(4)：373–383.(in Chinese))
[7] 陈文玲，李 宁.含非贯通裂隙岩体介质的损伤模型[J]. 岩土工程学报，2000，22(4)：430–434.(CHEN Wenling，LI Ning. Damage model of rock mass with non-penetrating fissures[J]. Journal of Geotechnical Engineering，2000，22(4)：430–434.(in Chinese))
[8] 肖维民，邓荣贵，付小敏，等. 单轴压缩条件下柱状节理岩体变形和强度各向异性模型试验研究[J]. 岩石力学与工程学报，2014，33(5)：957–963.(XIAO Weimin，DENG Ronggui，FU Xiaomin，et al. Model tests on deformation and strength anisotropy of columnar jointed rock mass under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(5)：957–963.(in Chinese))
[9] 许宝田，阎长虹，刘军熙，等. 边坡岩体软弱夹层剪切变形本构模型研究[J]. 岩土力学，2010，31(增2)：65–69.(XU Baotian，YAN Changhong，LIU Junxi，et al. Study on shear deformation constitutive model of weak interlayer in slope rock mass[J]. Rock and Soil Mechanics，2010，31(Supp.2)：65–69.(in Chinese))
[10] 朱道建，杨林德，蔡永昌. 节理岩体复合型多弱面软化模型的研究及实现[J]. 岩土工程学报，2010，32(2)：185–191.(ZHU Daojian，YANG Linde，CAI Yongchang. Mixed multi-weakness plane softening model for jointed rock mass[J]. Chinese Journal of Geotechnical Engineering，2010，32(2)：185–191.(in Chinese))
[11] 潘鹏志，丁梧秀，冯夏庭，等. 预制裂纹几何与材料属性对岩石裂纹扩展的影响研究[J]. 岩石力学与工程学报，2008，27(9)：1 882– 1 889.(PAN Pengzhi，DING Wuxiu，FENG Xiating，et al. Study on the influence of geometry and material properties of prefabricated cracks on rock crack propagation[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(9)：1 882–1 889.(in Chinese))
[12] 黄明利，冯夏庭，王水林. 多裂纹在不同岩石介质中的扩展贯通机制分析[J]. 岩土力学，2002，23(2)：142–146.(HUANG Mingli，FENG Xiating，WANG Shuilin. Analysis of propagation and penetration mechanism of multiple cracks in different rock medium[J]. Rock and Soil Mechanics，2002，23(2)：142–146.(in Chinese))
[13] 徐卫亚，郑文棠，宁 宇，等. 柱状节理坝基岩体三维各向异性数值分析[J]. 岩土力学，2010，31(3)：949–955.(XU Weiya，ZHENG Wentang，NING Yu，et al. Three-dimensional anisotropy of columnar jointed dam foundation rock mass；numerical analysis of anisotropy[J]. Rock and Soil Mechanics，2010，31(3)：949–955.(in Chinese))
[14] 宁 宇，徐卫亚，郑文棠，等. 柱状节理岩体随机模拟及其表征单元体尺寸研究[J]. 岩石力学与工程学报，2008，27(6)：1 202–1 208. (NING Yu，XU Weiya，ZHENG Wentang，et al. Stochastic simulation of columnar jointed rock mass and Study on its characterization unit size[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(6)：1 202–1 208.(in Chinese))
[15] JEON S，KIM J，SEO Y，et al. Effect of a fault and weak plane on the stability of a tunnel in rock-a scaled model test and numerical analysis[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(3)：658–663.
[16] 刘红岩，黄妤诗，李凯兵，等. 预制节理岩体试件强度及破坏模式的试验研究[J]. 岩土力学，2013，34(5)：1 235–1 241.(LIU Hongyan，HUANG Haoshi，LI Kaibing，et al. Experimental study on strength and failure mode of precast jointed rock mass specimens[J]. Rock and Soil Mechanics，2013，34(5)：1 235–1 241.(in Chinese))
[17] 郭东明，左建平，张 毅，等. 不同倾角组合煤岩体的强度与破坏机制研究[J]. 岩土力学，2011，32(5)：1 333–1 339.(GUO Dongming，ZUO Jianping，ZHANG Yi，et al. Study on strength and failure mechanism of coal and rock mass with different dip angle combinations[J]. Rock and Soil Mechanics，2011，32(5)：1 333–1 339. (in Chinese))
[18] 苏承东，吴秋红. 含天然贯通弱面石灰岩试样的力学性质研究[J].岩石力学与工程学报，2011，30(增2)：3 944–3 952.(SU Chengdong，WU Qiuhong. Study on the mechanical properties of limestone specimens containing natural weak faces[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.2)：3 944–3 952.(in Chinese))
[19] 李宏哲，夏才初，王晓东，等. 含节理大理岩变形和强度特性的试验研究[J].岩石力学与工程学报，2008，27(10)：2 118–2 123.(LI Hongzhe，XIA Caichu，WANG Xiaodong，et al. Experimental study on deformation and strength characteristics of jointed marble[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(10)：2 118–2 123.(in Chinese))
[20] 李树忱，汪 雷，李术才，等. 不同倾角贯穿节理类岩石试件峰后变形破坏试验研究[J]. 岩石力学与工程学报，2013，32(增2)： 3 391–3 395.(LI Shuchen，WANG Lei，LI Shucai，et al. Experimental study on post-peak deformation and failure of jointed rock specimens with different dips[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：3 391–3 395.(in Chinese))
[21] 冒海军，杨春和. 结构面对板岩力学特性的影响研究[J]. 岩石力学与工程学报，2005，24(20)：3 651–3 656.(MAO Haijun，YANG Chunhe. Study on effects of discontinuities on mechanical characters of slate[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(20)：3 651–3 656.(in Chinese))
[22] 肖维民，邓荣贵，付小敏，等. 柱状节理岩体侧向变形特性单轴压缩试验研究[J]. 地下空间与工程学报，2014，10(5)：1 047–1 052. (XIAO Weimin，DENG Ronggui，FU Xiaomin，et al. Uniaxial compression test study on lateral deformation characteristics of columnar jointed rock mass[J]. Journal of Underground Space and Engineering，2014，10(5)：1 047–1 052.(in Chinese))
[23] 向天兵，冯夏庭，陈炳瑞，等. 三向应力状态下单结构面岩石试样破坏机制与真三轴试验研究[J]. 岩土力学，2009，30(10)：2 908–2 916.(XIANG Tianbing，FENG Xiating，CHEN Bingrui，et al. Rock failure mechanism and true triaxial experimental study of specimens with single structural plane under three-dimensional stress[J]. Rock and Soil Mechanics，2009，30(10)：2 908–2 916.(in Chinese))
2019, Vol. 38 
