1.Key Laboratory for Exploitation
of Southwestern Resources and Environmental Disaster Control Engineering,
Ministry of Education, Chongqing University, Chongqing 400030, China; 2.Chongqing Industry Polytechnic
College, Chongqing 400044, China;
Abstract：An acoustic emission (AE) location experiment was performed on sandstone using an advanced AE test system. The space-time evolution rule regarding damage was analyzed under cyclic loading as well as AE. The results show that AE on static loading process is consistent with the damage evolution rule of compression and the elastic-plastic deformation phase; at the beginning of cyclic loading with low duration time and energy, AE events came from a small crack. The location result showed that most events occurred in the core zone forming at the static loading process, and the location points changed slowly. AE energy changed little during the metaphase of cyclic process. There was a modest increase of location points in every cycle. The tendency of steady development could be predicted from the AE location events. At the end of each cyclic loading, the quantity of AE events and energy increased quite rapidly, reaching a maximum at the last cycle. AE events had high energy and duration time. Location events changed quite rapidly and assembled and linked continuously in the core zone. At the same time, they expanded to the top of specimen. A macroscopic crack finally formed. In the postfailure process, some AE events still existed due to fracturing of gliding friction. Owing to the inner stress balance of rock even after loading stopped, minor AE events still occurred.
出版日期: 2009-12-05
引用本文:
. Space-time evolution rules study on acoustic
emission location in rock under cyclic loading[J]. Front. Struct. Civ. Eng., 2009, 3(4): 422-427.
Jiang XU, Shuchun LI, Yunqi TAO, Yongdong JIANG, Xiaojun TANG, . Space-time evolution rules study on acoustic
emission location in rock under cyclic loading. Front. Struct. Civ. Eng., 2009, 3(4): 422-427.
Li Shulin, Yin Xiangang, Wang Yongjia, Tang Haiyan. Studieson acoustic emission characters of uniaxial compressive rock failure. Chinese Journal of Rock Mechanics and Engineering. 2004, 23(15): 2499―2503 (in Chinese)
Zhang Ru, Xie Heping, Liu Jianfeng. Experimental study on acoustic emission characteristicsof rock failure under uniaxial multilevel loadings. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(12): 2584―2588 (in Chinese)
Zhao Xingdong, Tang Chunan, Li Yuanhui, Yuan Ruipu, Zhang Jianyong. Study on AE activity characteristicsunder uniaxial compression londing. ChineseJournal of Rock Mechanics and Engineering. 2006, 25(S2): 3673―3678 (in Chinese)
Zhao Xingdong, Li Yuanhui. Yuan Ruipu, Yang Tianhong, Zhang Jianyong, Li Jianpo. Study on crack dynamic propagation process of rock samplesbassed on acoustic emission location. ChineseJournal of Rock Mechanics and Engineering, 2007, 26(5): 944―950 (in Chinese)
Guo Yanshuang, Huang Kaizhu, Zhu Weisheng, Zhou Jintian, Li Shucai. Study on fracture pattern of open surface-flawin gabbro. Chinese Journal of Rock Mechanicsand Engineering, 2007, 26(3): 525―531 (in Chinese)
Zhao Xingdong, Li Yuanhui. Yuan Ruipu, Zhang Jianyong.. Experimentalverification/analysis of Kaiser effect in granite. Journal of Northeast University, 2007, 28(2): 254―257 (in Chinese)
Jiang Yu, Ge Xiurun, Ren Jianxi. Deformation rules and acoustics of rocks in process inprocess fatigue failure. Chinese Journalof Rock Mechanics and Engineering, 2004, 23(11): 1810―1814 (in Chinese)
Hu Xinliang, Ma Shengli, Gao Jingchun, Liu Liqiang, Diao Guiling, Song Fusan, Liu Shengguo. Locationof acoustic emissions in non-integral rock using relative locatingmethod. Chinese Journal of Rock Mechanicsand Engineering, 2004, 23 (2): 277―283 (in Chinese)
Ba Jin, Liu Liqiang, Ma Shengli. A summary on acountic emission source location methodsin rock mechanics experiment. NondestructiveTestin, 2004, 26(7): 342―348 (in Chinese)
Cai M, Morioka H, Kaiser P K, Tasaka Y, Karose H, Minami M, Maejima T. Back-analysisof mass stressth parameters using AE monitoring data. International Journal of Rock Mechanics and Mining Sciences, 2007, 44(4): 538―549 doi: 10.1016/j.ijrmms.2006.09.012
Kusunose K. Failurezone development in andesite as observed from acoustic emission locationsand velocity changes. Physics of the Earthand Planetary Interiors, 1995, 88(2): 131―143 doi: 10.1016/0031-9201(94)02967-G
Carabelli E, Federici P, Graziano FRondena E, Zaninetti A. Location of AE source inthe rock foundation of the passante dam. Engineering Fracture Mechanics, 1990, 35(3): 28―36 doi: 10.1016/0013-7944(90)90234-8
Labuz J F, Bridell J M. Redcuing frictional constrainin compression testing through lubrication. International Journal of Rock Mechanics and Mining Science and GeomechanicsAbstracts, 1993, 30: 451―455 doi: 10.1016/0148-9062(93)91726-Y
Nelson P P, Glaser S D. Acoustic emissions producedby discrete fracture inrock. Part 1. Source location and orientationeffects. International Journal of RockMechanics and Mining Science & Geomechanics Abstracts, 1992, 29(3): 237―251 doi: 10.1016/0148-9062(92)93658-7
Lockner D. Therole of acoustic emission in the study of rock fracture. International Journal of Rock Mechanics and MiningSciences and Geomechanics Abstracts, 1993, 30(7): 883―899 doi: 10.1016/0148-9062(93)90041-B
