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| MULTIPARAMETER MONITORING EXPERIMENTS FOR INSTABILITY DESTRUCTION OF COAL SAMPLES |
| JIANG Yaodong1，2，LU Yukai2，ZHAO Yixin1，2，SONG Yiming2，TAO Lei2 |
(1. State Key Laboratory of Coal Resources and Safe Mining，China University of Mining and Technology，Beijing 100083，China；
2. School of Mechanics and Civil Engineering，China University of Mining and Technology，Beijing 100083，China) |
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Abstract In order to obtain the precursor information of intense instability destruction of coal and rock mass which is induced by the deep mining，roadway excavation and face mining disturbance，according to the abnormal signal of coal samples would produce under external loads，which include elastic wave，charge，temperature signals，etc.，monitoring devices including acoustic emission instrument，LCR bridge，infrared thermograph and static strain devices are used to synchronously monitor the failure process under uniaxial compression. In order to study the multiparameter evolution characteristics，all data are selected in the same time axis. Meanwhile，principal component analysis and factor analysis in multivariate statistical analysis are used to analyze the original monitoring results of multiparameter；and the results show that acoustic emission and stress monitoring results could better reflect the characteristics of the samples? precursor destruction and get the precursor information of coal samples? instability destruction.
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Received: 08 August 2011
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| [1] 张 茹，谢和平，刘建峰，等. 单轴多级加载岩石破坏声发射特性试验研究[J]. 岩石力学与工程学报，2006，25(12)：2 584–2 588. (ZHANG Ru，XIE Heping，LIU Jianfeng，et al. Experimental study of acoustic emission characteristics of rock failure under uniaxial multilevel loadings[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(12)：2 584–2 588.(in Chinese))
[2] 谭云亮，王学水. 煤矿坚硬顶板活动过程中声发射特征研究[J]. 岩石力学与工程学报，1992，11(3)：211–217.(TAN Yunliang，WANG Xueshui. A preliminary study of acoustic emission of rock during the roof weighting process in a coal mine[J]. Chinese Journal of Rock Mechanics and Engineering，1992，11(3)：211–217.(in Chinese))
[3] 周小平，张永兴. 大厂铜坑矿细脉带岩石结构面直剪试验中声发射特性研究[J]. 岩石力学与工程学报，2002，21(5)：724–727.(ZHOU Xiaoping，ZHANG Yongxing. Study on the property of acoustic emission straight shearing test of rock joint in Dachang Tongkeng mine[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(5)：724–727.(in Chinese))
[4] 吴立新，刘善军，吴育华，等. 遥感–岩石力学(I)——非连续组合断层破裂的热红外辐射规律及其构造地震前兆意义[J]. 岩石力学与工程学报，2004，23(1)：24–30.(WU Lixin，LIU Shanjun，WU Yuhua，et al. Remote sensing-rock mechanics(I)—laws of thermal infrared radiation from fracturing of discontinuous jointed faults and its meanings for tectonic earthquake omens[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(1)：24–30.(in Chinese))
[5] 陈 颙，黄廷芳，刘恩儒. 岩石物理学[M]. 合肥：中国科学技术大学出版社，2009：239–243.(CHEN Yong，HUANG Tingfang，LIU Enru. Petrophysics[M]. Hefei：University of Science and Technology of China Press，2009：239–243.(in Chinese))
[6] ZHAO Y X，JIANG Y D. Acoustic emission and thermal infrared precursors associated with bump-prone coal failure[J]. International Journal of Coal Geology，2010，83(1)：11–20.
[7] 姜耀东，赵毅鑫，刘文岗，等. 煤岩冲击失稳的机制和试验研究[M]. 北京：科学出版社，2009：231–239.(JIANG Yaodong，ZHAO Yixin，LIU Wengang，et al. Investigation on the mechanism of coal bumps and its experiment study[M]. Beijing：Science Press，2009：231–239. (in Chinese))
[8] 李俊平，周创兵. 岩体的声发射特征试验研究[J]. 岩土力学，2004，25(3)：374–378.(LI Junping，ZHOU Chuangbing. Experimental research on acoustic emission characteristics of rock mass[J]. Rock and Soil Mechanics，2004，25(3)：374–378.(in Chinese))
[9] 王 宁，韩志型，王月明，等. 评价岩体稳定性的声发射相对强弱指标[J]. 岩土工程学报，2005，27(2)：190–192.(WANG Ning，HAN Zhixing，WANG Yueming，et al. Evaluating criterion of relative strength-weakness characteristic based on acoustic emission parameters of rock mass stability[J]. Chinese Journal of Geotechnical Engineering，2005，27(2)：190–192.(in Chinese))
[10] 曹树刚，刘延保，张立强. 突出煤体变形破坏声发射特征的综合分析[J]. 岩石力学与工程学报，2007，26(增1)：2 794–2 799.(CAO Shugang，LIU Yanbao，ZHANG Liqiang. Study on characteristics of acoustic emission in outburst coal[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：2 794–2 799.(in Chinese))
[11] 吴立新，刘善军，吴育华，等. 遥感–岩石力学(IV)——岩石压剪破裂的热红外辐射规律及其地震前兆意义[J]. 岩石力学与工程学报，2004，23(4)：539–544.(WU Lixin，LIU Shanjun，WU Yuhua，et al. Remote sensing-rock mechanics(IV)—laws of thermal infrared radiation from compressively-sheared fracturing of rock and its meanings for earthquake omens[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(4)：539–544.(in Chinese))
[12] 刘善军，吴立新，王川婴，等. 遥感–岩石力学(VIII)——论岩石破裂的热红外前兆[J]. 岩石力学与工程学报，2004，23(10)：1 621– 1 627.(LIU Shanjun，WU Lixin，WANG Chuanying，et al. Remote sensing-rock mechanics(VIII)—thermal infrared omens of rock fracturing[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(10)：1 621–1 627.(in Chinese))
[13] 朱建平. 应用多元统计分析[M]. 北京：科学出版社，2006，93–130.(ZHU Jianping. Applied multivariate statistical analysis[M]. Beijing：Science Press，2006：93–130.(in Chinese))
[14] 姜耀东，吕玉凯，赵毅鑫，等. 综采工作面过断层巷道稳定性多参量监测[J]. 煤炭学报，2011，36(10)：1 601–1 606.(JIANG Yaodong，LU Yukai，ZHAO Yixin，et al. Multi-parameter monitoring the stability of rock around roadway while fully mechanized coal face passing through fault[J]. Journal of China Coal Society，2011，36(10)：1 601– 1 606.(in Chinese)) |
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LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
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2012, Vol. 31 
