Abstract
To study the mechanism of rockburst and its spatio-temporal evolution criterion, a rockburst simulation experiment was performed on granite specimens, each with a prefabricated circular hole, under different lateral loads. Using micro camera, acoustic emission (AE) system, and infrared thermal imager, the AE characteristics and thermal radiation temperature migration were studied during the rockburst process. Then, the failure mode and damage evolution of the surrounding rock were analyzed. The results demonstrate that increasing the lateral load can first increase and then reduce the bearing capacity of the hole. In this experiment, the hole failure process could be divided into four periods: quiet, particle ejection, stability failure and collapse. Correspondingly, the AE signals evolved from a calm stage, to have intermittent appearance; then, they were continuous with a sudden increase, and finally increased dramatically. The failure of the surrounding rock was mainly tensile failure, while shear failure tended to first increase and then decrease. Meanwhile, damage to the hole increased gradually during the particle ejection period, whereas damage to the rockburst mainly occurred in the stability failure period. The thermal radiation temperature migration exhibited warming in shallow parts, inward expansion, cooling in the shallow parts with free surface heating, inward expansion, a sudden rise in temperature of the rockburst pits, and finally specimen failure. The initial reinforcement support should fully contribute to surface support. Furthermore, an appropriate tensile capacity and good energy absorption capacity should be established in support systems for high-stress roadways.
摘要
为了研究岩爆机理和时空演化规律, 采用预制圆孔花岗岩试件进行不同侧向载荷下的岩爆模拟试验, 利用微型摄像机、声发射(AE)系统和红外热像仪等监测系统, 研究岩爆的声发射特征和热辐射温度运移, 此外还分析了围岩的破裂模式及损伤演化。结果表明, 侧向载荷的升高对孔洞的承载能力起到先增强后弱化的作用, 岩爆可分为平静期、颗粒弹射期、稳定破坏期、全面崩塌期4 个阶段, 声发射信号演化为由平静演变为间断出现, 然后, 持续发生伴随突增, 最终急剧破坏; 围岩破坏以拉伸破坏为主, 剪切破坏呈现先增多后减少的趋势; 颗粒弹射期孔洞损伤逐渐增加, 但岩爆的损伤主要集中在稳定破坏期; 热辐射温度运移表现为浅部升温, 向内扩展, 浅部降温, 自由面升温, 向内扩展, 岩爆坑温度骤升, 试件破坏。表面支护的初期加固作用应该被充分发挥作用, 巷道支护体系应具备适当的抗拉能力和良好的吸能能力。
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References
SI Xue-feng, GONG Feng-qiang. Strength-weakening effect and shear-tension failure mode transformation mechanism of rockburst for fine-grained granite under triaxial unloading compression [J]. International Journal of Rock Mechanics and Mining Sciences, 2020, 131: 104347. DOI: https://doi.org/10.1016/j.ijrmms.2020.104347.
SIREN T, KANTIA P, RINNE M. Considerations and observations of stress-induced and construction-induced excavation damage zone in crystalline rock [J]. International Journal of Rock Mechanics and Mining Sciences, 2015, 73: 165–174. DOI: https://doi.org/10.1016/j.ijrmms.2014.11.001.
LABIOUSE V, VIETOR T. Laboratory and in situ simulation tests of the excavation damaged zone around galleries in opalinus clay [J]. Rock Mechanics and Rock Engineering, 2014, 47: 57–70. DOI: https://doi.org/10.1007/s00603-013-0389-4.
ZHANG Chuan-qing, FENG Xia-ting, ZHOU Hui, QIU Shi-li, WU Wen-ping. Case histories of four extremely intense rockbursts in deep tunnels [J]. Rock Mechanics and Rock Engineering, 2012, 45(3): 275–288. DOI: https://doi.org/10.1007/s00603-011-0218-6.
ZHOU Xiao-ping, PENG Sen-lin, ZHANG Jian-zhi, QIAN Qi-hu, LU Ri-chao. Predictive acoustical behavior of rockburst phenomena in Gaoligongshan tunnel, Dulong river highway, China [J]. Engineering Geology, 2018, 247: 117–128. DOI: https://doi.org/10.1016/j.enggeo.2018.10.023.
LIU Fei, TANG Chun-an, MA Tian-hui, TANG Lie-xian. Characterizing rockbursts along a structural plane in a tunnel of the Hanjiang-to-Weihe river diversion project by microseismic monitoring [J]. Rock Mechanics and Rock Engineering, 2018, 52(6): 1835–1856. DOI: https://doi.org/10.1007/s00603-018-1649-0.
LUO Yong, GONG Feng-qiang, LI Xi-bing, WANG Shan-yong. Experimental simulation investigation of influence of depth on spalling characteristics in circular hard rock tunnel [J]. Journal of Central South University, 2020, 27(3): 891–910. DOI: https://doi.org/10.1007/s11771-020-4339-5.
FENG Xia-Ting, LIU Jian-po, CHEN Bing-rui, XIAO Ya-xun, FENG Guang-liang, ZHANG Feng-peng. Monitoring, warning, and control of rockburst in deep metal mines [J]. Engineering, 2017, 3(4): 538–545. DOI: https://doi.org/10.1016/J.ENG.2017.04.013.
JIANG Bang-you, GU Shi-tan, WANG Lian-guo, ZHANG Guang-chao, LI Wen-shuai. Strainburst process of marble in tunnel-excavation-induced stress path considering intermediate principal stress [J]. Journal of Central South University, 2019, 26(4): 984–999. DOI: https://doi.org/10.1007/s00603-018-1649-0.
ZHOU Jian, LI Xi-bing, SHI Xiu-zhi. Long-term prediction model of rockburst in underground openings using heuristic algorithms and support vector machines [J]. Safety Science, 2012, 50(4): 629–644. DOI: https://doi.org/10.1016/j.ssci.2011.08.065.
SU Guo-shao, SHI Yan-jiong, FENG Xia-ting, JIANG Jian-qing, ZHANG Jie, JIANG Quan. True-triaxial experimental study of the evolutionary features of the acoustic emissions and sounds of rockburst processes [J]. Rock Mechanics and Rock Engineering, 2018, 51(2): 375–389. DOI: https://doi.org/10.1007/s00603-017-1344-6.
GONG Feng-qiang, WU Chen, LUO Song, YAN Jing-yi. Load-unload response ratio characteristics of rock materials and their application in prediction of rockburst proneness [J]. Bulletin of Engineering Geology and the Environment, 2019, 78(7): 5445–5466. DOI: https://doi.org/10.1007/s10064-019-01474-6.
ZHAO X G, WANG J, CAI M, CHENG C, MA LK, SU R, ZHAO F, LIU D J. Influence of unloading rate on the strainburst characteristics of Beishan granite under true-triaxial unloading conditions [J]. Rock Mechanics and Rock Engineering, 2014, 47(2): 467–483. DOI: https://doi.org/10.1007/s00603-013-0443-2.
GONG Feng-qiang, SI Xue-feng, LI Xi-bing, WANG Shan-yong. Experimental investigation of strain rockburst in circular caverns under deep three-dimensional high-stress conditions [J]. Rock Mechanics and Rock Engineering, 2019, 52(5): 1459–1474. DOI: https://doi.org/10.1007/s00603-018-1660-5.
LIU Xi-qi, XIA Yuan-you, LIN Man-qing, BENZERZOUR M. Experimental study of rockburst under true-triaxial gradient loading conditions [J]. Geomechanics and Engineering, 2019, 18(5): 481–492. DOI: https://doi.org/10.12989/gae.2019.18.5.481.
ZHU Guang-an, DOU Lin-ming, WANG Chang-bin, DING Zi-wei, FENG Ze-jie, XUE Fei. Experimental study of rock burst in coal samples under overstress and true-triaxial unloading through passive velocity tomography [J]. Safety Science, 2019, 117: 388–403. DOI: https://doi.org/10.1016/j.ssci.2019.04.012.
LIU Guo-Feng, FENG Xia-Ting, FENG Guang-Liang, CHEN Bing-Rui, CHEN Dong-Fang, DUAN Shu-Qian. A method for dynamic risk assessment and management of rockbursts in drill and blast tunnels [J]. Rock Mechanics and Rock Engineering, 2016, 49(8): 3257–3279. DOI: https://doi.org/10.1007/s00603-016-0949-5.
WANG Yang, HE Man-chao, LIU Dong-qiao, GAO Yu-bing. Rockburst in sandstone containing elliptic holes with varying axial ratios [J]. Advances in Materials Science and Engineering, 2019, 2019: 1–17. DOI: https://doi.org/10.1155/2019/5169618.
LUO Yong, GONG Feng-qiang, LIU Dong-qiao, WANG Shan-yong, SI Xue-feng. Experimental simulation analysis of the process and failure characteristics of spalling in D-shaped tunnels under true-triaxial loading conditions [J]. Tunnelling and Underground Space Technology, 2019, 90: 42–61. DOI: https://doi.org/10.1016/j.tust.2019.04.020.
HU Xiao-chuan, SU Guo-shao, CHEN Guan-yan, MEI Shi-ming, FENG Xia-ting, MEI Guo-xiong, HUANG Xiao-hua. Experiment on rockburst process of borehole and its acoustic emission characteristics [J]. Rock Mechanics and Rock Engineering, 2019, 52(3): 783–802. DOI: https://doi.org/10.1007/s00603-018-1613-z.
RUECK M, RAHNER R, SONE H, DRESEN G. Initiation and propagation of mixed mode fractures in granite and sandstone [J]. Tectonophysics, 2017, 717: 270–283. DOI: https://doi.org/10.1016/j.tecto.2017.08.004.
MORADIAN Z, EINSTEIN H H, BALLIVY G. Detection of cracking levels in brittle rocks by parametric analysis of the acoustic emission signals [J]. Rock Mechanics and Rock Engineering, 2016, 49(3): 785–800. DOI: https://doi.org/10.1007/s00603-015-0775-1.
CHANG S H, LEE C I. Estimation of cracking and damage mechanisms in rock under triaxial compression by moment tensor analysis of acoustic emission [J]. International Journal of Rock Mechanics and Mining Sciences, 2004, 41(7): 1069–1086. DOI: https://doi.org/10.1016/j.ijrmms.2004.04.006.
SU Guo-shao, SHI Yan-jiong, FENG Xia-ting, JIANG Jianqing, ZHANG Jie, JIANG Quan. True-triaxial experimental study of the evolutionary features of the acoustic emissions and sounds of rockburst processes [J]. Rock Mechanics and Rock Engineering, 2018, 51(2): 375–389. DOI: https://doi.org/10.1007/s00603-017-1344-6.
ZHANG Yan, FENG Xia-ting, YANG Cheng-xiang, ZHANG Xi-wei, SHARIFZADEH M, WANG Zhao-feng. Fracturing evolution analysis of Beishan granite under true triaxial compression based on acoustic emission and strain energy [J]. International Journal of Rock Mechanics and Mining Sciences, 2019, 117: 150–161. DOI: https://doi.org/10.1016/j.ijrmms.2019.03.029.
SUN Bing, HOU Shan-shan, XIE Jie-hui, ZENG Sheng. Failure prediction of two types of rocks based on acoustic emission characteristics [J]. Advances in Civil Engineering, 2019, 2019(15): 1–11. DOI: https://doi.org/10.1155/2019/5028489.
SUN Xiao-ming, XU Hui-chen, HE Man-chao, ZHANG Fang. Experimental investigation of the occurrence of rockburst in a rock specimen through infrared thermography and acoustic emission [J]. International Journal of Rock Mechanics and Mining Sciences, 2017, 93: 250–259. DOI: https://doi.org/10.1016/j.ijrmms.2017.02.005.
XIAO Fu-kun, HE Jun, LIU Zhi-jun, SHEN Zhi-liang, LIU Gang. Analysis on warning signs of damage of coal samples with different water contents and relevant damage evolution based on acoustic emission and infrared characterization [J]. Infrared Physics & Technology, 2019, 97: 287–299. DOI: https://doi.org/10.1016/j.infrared.2019.01.007.
WANG Shu-ren, LI De-jian, LI Chun-liu, ZHANG Chengguo, ZHANG Yan-bo. Thermal radiation characteristics of stress evolution of a circular tunnel excavation under different confining pressures [J]. Tunnelling and Underground Space Technology, 2018, 78: 76–83. DOI: https://doi.org/10.1016/j.tust.2018.04.021.
LIU Shan-jun, WEI Jia-lei, HUANG Jian-wen, WU Li-xin, ZHANG Yan-bo, TIAN Bao-zhu. Quantitative analysis methods of infrared radiation temperature field variation in rock loading process [J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34(1): 2968–2976. DOI: https://doi.org/10.13722/j.cnki.jrme.2014.0656. (in Chinese)
DU Kun, TAO Ming, LI Xi-bing, ZHOU Jian. Experimental study of slabbing and rockburst induced by true-triaxial unloading and local dynamic disturbance [J]. Rock Mechanics and Rock Engineering, 2016, 49(9): 3437–3453. DOI: https://doi.org/10.1007/s00603-016-0990-4.
WANG Miao-miao, TAN Cheng-xuan, MENG Jing, YANG Bai-cun, LI Yuan. Crack classification and evolution in anisotropic shale during cyclic loading tests by acoustic emission [J]. Journal of Geophysics and Engineering, 2017, 14(4): 930–938. DOI: https://doi.org/10.1088/1742-2140/aa6f24.
ZHANG Yan-bo, LIU Shan-jun. Thermal radiation temperature field variation of hole rock in loading process [J]. Rock and Soil Mechanics, 2011, 32(4): 1013–1017. DOI: https://doi.org/10.16285/j.rsm.2011.04.003. (in Chinese)
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The overarching research goals were developed by LIU Chong-yan, ZHAO Guang-ming and XU Wen-song. LIU Chong-yan, HUANG Shun-jie and ZHOU Jun provided the experimental methods and data, and analyzed the experimental data. The initial draft of the manuscript was written by LIU Chong-yan and ZHAO Guang-ming, MENG Xiang-rui, WANG Yun-kun revised and reviewed the manuscript. All authors replied to reviewers’ comments and revised the final version.
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LIU Chong-yan, ZHAO Guang-ming, XU Wen-song, MENG Xiang-rui, HUANG Shun-jie, ZHOU Jun, and WANG Yun-kun declare that they have no conflict of interest.
Foundation item: Project(2017YFC0603003) supported by the National Key Research and Development Project of China; Projects(51974009, 51674008) supported by the National Natural Science Foundation of China; Project(201904a07020010) supported by the Key Research and Development Program of Anhui Province, China; Project(2018D187) supported by the Leading Talent Project of Anhui “Special Support Program”, Anhui Provincial Academic and Technology Leaders Research Activities Funding, China; Project(gxbjZD2016051) supported by the Excellence Talent Training Program of High School, China; Project (2019CX2008) supported by the Graduate Innovation Fund of Anhui University of Science and Technology, China
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Liu, Cy., Zhao, Gm., Xu, Ws. et al. Experimental investigation on failure process and spatio-temporal evolution of rockburst in granite with a prefabricated circular hole. J. Cent. South Univ. Technol. 27, 2930–2944 (2020). https://doi.org/10.1007/s11771-020-4519-3
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DOI: https://doi.org/10.1007/s11771-020-4519-3