红透山铜矿深部片麻岩力学行为试验研究

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Abstract To investigate mechanical properties of the gneiss in deep stope at Hongtoushan copper mine，Fushun，and further study the mechanism concerning slight rock burst and time-efficient deformation failure，the standard triaxial specimens are made from the core to carry out the complete failure processing triaxial test，unloading confining pressure under constant deviator stress test and creep test by Rockman 207 triaxial apparatus. The test results show that：(1) The relevancy of wave velocity-density-strength is not strong and the scatter is significant in uniaxial and triaxial results. (2) The brittle failure behaviour on hard rock is observed when the confining pressure is lower than 40 MPa，which would lead to a potential rockburst. (3) The strength in the unloading confining pressure under constant deviator stress tests is lower than that in the conventional triaxial. The plastic deformation is apparent during the loading，which indicates that the unloading path affects the rockburst. (4) Creep deformation is not measured under low stress level and the step deformation can be seen prior to the typical accelerated creep under high stress level. The failure mode of the gneiss sample in the creep test is with high similarity in comparison with the practical rib spalling in situ.

Key words： rock mechanics hard rock gneiss elastic-brittle behaviour post-peak behaviour creep deep mine

Received: 05 November 2012

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https://rockmech.whrsm.ac.cn/EN/Y2013/V32/Is2/3228

[1] 何满潮，谢和平，彭苏萍，等. 深部开采岩体力学[J]. 岩石力学与工程学报，2005，24(16)：2 803–2 813.(HE Manchao，XIE Heping，PENG Suping，et al. Study on rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 803–2 813.(in Chinese)) [2] 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 Hongwei，XIE Heping，ZUO Jianping. Developments in researches on mechanical behaviors of rocks under the condition of high ground pressure in the depths[J]. Advance in mechanics，2005，35(1)：91–99.(in Chinese)) [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] SANADA H，NAKAMURA T， SUGITA Y. Mine-by experiment in a deep shaft in Neogene sedimentary rocks at Horonobe，Japan[J]. International Journal of Rock Mechanics and Mining Sciences，2012，56(7)：127–135. [5] HUDSON J A，FENG X T. Updated flowcharts for rock mechanics modelling and rock engineering design[J]. International Journal of Rock Mechanics and Mining Sciences，2007，44(2)：174–195. [6] HE M，MIAO J，FENG J. Rock burst process of limestone and its acoustic emission characteristics under true-triaxial unloading conditions[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(2)：286–298. [7] MALAN D. Time-dependent behaviour of deep level tabular excavations in hard rock[J]. Rock Mechanics and Rock Engineering，1999，32(2)：123–155. [8] BROWN E，HOEK E. Trends in relationships between measured in-situ stresses and depth[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1978，15(1)：78–85. [9] OKUI Y，HORII H. Stress and time-dependent failure of brittle rocks under compression：a theoretical prediction[J]. Journal of Geophysical Research，1997，102(B7)：14 869–14 881. [10] MALAN D. Manuel Rocha medal recipient simulating the time- dependent behaviour of excavations in hard rock[J]. Rock Mechanics and Rock Engineering，2002，35(4)：225–254. [11] 吴刚，孙钧. 卸荷应力状态下裂隙岩体的变形和强度特性[J]. 岩石力学与工程学报，1998，17(6)：615–621.(WU Gang，SUN Jun. Deformation and strength characters of jointed rock mass under unloading stress states[J]. Chinese Journal of Rock Mechanics and Engineering，1998，17(6)：615–621.(in Chinese)) [12] 陈卫忠，吕森鹏，郭小红，等. 基于能量原理的卸围压试验与岩爆判据研究[J]. 岩石力学与工程学报，2009，28(8)：1 530–1 540. (CHEN Weizhong，LU Senpeng，GUO Xiaohong，et al. Research on unloading confining pressure tests and rockburst criterion based on energy theory[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(8)：1 530–1 540.(in Chinese)) [13] SWANSON G，BROWN W S. An observation of loading path independence of fracture in rock[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1971，8(3)：277–287. [14] MARTIN C D. Seventeenth Canadian geotechnical colloquium：the effect of cohesion loss and stress path on brittle rock strength[J]. Canadian Geotechnical Journal，1997，34(5)：698–725. [15] 尤明庆，华安增. 岩石试样的三轴卸围压试验[J]. 岩石力学与工程学报，1998，17(1)：24–29.(YOU Mingqing，HUA Anzeng. Triaxial confining pressure unloading of test rock sample[J]. Chinese Journal of Rock Mechanics and Engineering，1998，17(1)：24–29.(in Chinese)) [16] 张凯，周辉，潘鹏志，等. 不同卸荷速率下岩石强度特性试验研究[J]. 岩土力学，2010，31(7)：2 072–2 078.(ZHANG Kai，ZHOU Hui，PAN Pengzhi，et al. Characteristics of strength of rocks under different unloading rates[J]. Rock and Soil Mechanics，2010，31(7)：2 072–2 078.(in Chinese)) [17] 黄润秋，黄达. 高地应力条件下卸荷速率对锦屏大理岩力学特性影响规律的试验研究[J]. 岩石力学与工程学报，2010，29(1)：21–33.(HUANG Runqiu，HUANG Da. Experimental research on affection laws of unloading rates on mechanical properties of Jinping marble under high geostress[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(1)：21–33.(in Chinese)) [18] 邱士利，冯夏庭，张传庆，等. 不同初始损伤和卸荷路径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，2012，31(8)：1 686–1 697.(QIU Shili，FENG Xiating，ZHANG Chuanqing， et al. Experimental research on mechanical properties of deep marble under different initial damage levels and unloading paths[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(8)：1 686– 1 697.(in Chinese)) [19] MIURA K，OKUI Y，HORII H. Micromechanics-based prediction of creep failure of hard rock for long-term safety of high-level radioactive waste disposal system[J]. Mechanics of Materials，2003，35(3)：587–601. [20] 徐卫亚，杨圣奇，杨松林，等. 绿片岩三轴流变力学特性的研究(I)：试验结果[J]. 岩土力学，2005，26(4)：531–537.(XU Weiya，YANG Shengqi，YANG Songlin，et al. Investigation on triaxial rheology mechanical properties of greenschist specimen(I)：experimental results[J]. Rock and Soil Mechanics，2005，26(4)：531–537.(in Chinese)) [21] 张清照，沈明荣，丁文其. 锦屏绿片岩力学特性及长期强度特性研究[J]. 岩石力学与工程学报，2012，31(8)：1 642–1 649.(ZHANG Qingzhao，SHEN Mingrong，DING Wenqi. Study on mechanical properties and long-term strength of Jinping green schist[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(8)：1 642– 1 649.(in Chinese)) [22] 刘建坡，石长岩，李元辉，等. 红透山铜矿微震监测系统的建立及应用研究[J]. 采矿与安全工程学报，2012，29(1)：72–77.(LIU Jianpo，SHI Changyan，LI Yuanhui，et al. Studies on establishment and application of microseismic monitoring system in Hongtoushan copper mine.[J]. Journal of Mining and Safety Engineering，2012，29(1)：72–77.(in Chinese)) [23] 吴满路，廖椿庭，张春山，等. 红透山铜矿地应力测量及其分布规律研究[J]. 岩石力学与工程学报，2004，23(23)：3 943–3 947.(WU Manlu，LIAO Chunting，ZHANG Chunshan，et al. Research on in-situ stress measurement and its distribution law in Hongtoushan copper mine[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(23)：3 943–3 947.(in Chinese)) [24] 于凤金. 红透山式矿床成矿模式与找矿模型研究[博士学位论文][D]. 沈阳：东北大学，2006.(YU Fengjin. The study on metallogenic model and prospecting pattern for Hongtoushan-type deposit[Ph. D. Thesis][D]. Shenyang：Northeastern University，2006.(in Chinese)) [25] 陈卫忠，于洪丹，王晓全，等. 双联动软岩渗流–应力耦合流变仪的研制[J]. 岩石力学与工程学报，2009，28(11)：2 176–2 183. (CHEN Weizhong，YU Hongdan，WANG Xiaoquan，et al. Development of a double linkage triaxial testing machine for hydro-mechanical soft rock[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(11)：2 176–2 183.(in Chinese)) [26] YOUN H，TONON F. Multi-stage triaxial test on brittle rock[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(4)：678–684. [27] 施行觉，徐果明，靳平，等. 岩石的含水饱和度对纵、横波速及衰减影响的实验研究[J]. 地球物理学报，1995，38(1)：281–287.(SHI Xingjue，XU Guoming，JIN Ping，et al. The laboratory study of influence of water saturation on rock?s velocity and attenuation[J]. Acta Geophysica Sinica，1995，38(1)：281–287.(in Chinese)) [28] GARDNER G，GARDNER L，GREGORY A. Formation velocity and density：the diagnostic basics for stratigraphic traps[J]. Geophysics，1974，39(6)：770–780. [29] KAHRAMAN S. Evaluation of simple methods for assessing the uniaxial compressive strength of rock[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(7)：981–994. [30] CHO J W，KIM H，JEON S，et al. Deformation and strength anisotropy of Asan gneiss，Boryeong shale，and Yeoncheon schist[J]. International Journal of Rock Mechanics and Mining Sciences，2012，50(2)：158–169. [31] WAWERSIK W，FAIRHURST C. A study of brittle rock fracture in laboratory compression experiments[J]. International Journal of Rock Mechanics and Mining Sciences，1970，7(5)：561–575. [32] MOOG K. Experimental rock mechanics[M]. London，U K：Taylor and Francis，2006：54.