›› 2017, Vol. 38 ›› Issue (8): 2189-2197.doi: 10.16285/j.rsm.2017.08.005

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

The evolution law of acoustic emission events during the fracture process of altered granite gneiss

ZHANG Peng-hai, YANG Tian-hong, XU Tao, YU Qing-lei, ZHOU Jing-ren, ZHAO Yong-chuan   

  1. Center for Rock Instability and Seismicity Research, Northeastern University, Shenyang, Liaoning 110819, China
  • Received:2015-09-24 Online:2017-08-11 Published:2018-06-05
  • Supported by:

    This work was supported by the Key Research and Program of China (2016YFC0801607) and the National Natural Science Foundation of China (51604062).

Abstract: In this study, acoustic emission (AE) tests were conducted on altered granite gneiss specimens under uniaxial compression conditions. The evolution laws of AE events during the failure processes of specimens were further investigated. The results showed that for most specimens, the first occurrence of the high-energy level AE event indicated that the specimens were at the high-stress level. It is found that the stress level further increased when the intermediate-energy level AE events distribute throughly in specimens. The imminent rock failure was identified by the occurrence of the high-energy level AE event in the final through-going area. For brittle failure specimens, the through-going distribution phenomena of the intermediate-energy level AE events would not occur. For specimens contained weak-zones, the first high-energy level AE event took place at the low-stress level. In the meantime, the intermediate-energy level AE events gathered in a band shape around the high-energy level AE event. However, the density and energy level of AE events were low in the area far away from the high-energy level AE event. The research results can provide a testing basis for the identification of stress level and the evaluation of rock stability.

Key words: altered granite gneiss, acoustic emission events, rock failure, stress level

CLC Number: 

  • TU 454

[1] GAO Jun, DANG Fa-ning, MA Zong-yuan. Reduction measure research for reduction of high stress level of ultra-high asphalt concrete core [J]. Rock and Soil Mechanics, 2020, 41(5): 1730-1739.
[2] CHEN Bing-rui, WU Hao, CHI Xiu-wen, LIU Hui, WU Meng-die, YAN Jun-wei, . Real-time recognition algorithm for microseismic signals of rock failure based on STA/LTA and its engineering application [J]. Rock and Soil Mechanics, 2019, 40(9): 3689-3696.
[3] XIA Tang-dai, ZHENG Qing-qing, CHEN Xiu-liang, . Predicting excess pore water pressure under cyclic loading with regular intervals based on cumulative dynamic deviator stress level [J]. Rock and Soil Mechanics, 2019, 40(4): 1483-1490.
[4] ZHOU Lei, ZHU Zhe-ming, LIU Bang. Influence of cracks on surrounding rock damage-failure mode of straight wall arch tunnel [J]. , 2017, 38(12): 3688-3697.
[5] NGUYEN Hong Phong , LUO Qiang , MENG Wei-chao , JIANG Liang-wei , ZHANG Liang,. Analysis of time-effect characteristics of soil deformation and its classification based on direct shear test [J]. , 2016, 37(2): 453-464.
[6] LI Shu-cai , CHEN Yun-juan , ZHU Wei-shen , ZHAO Cheng-long , LI Li-ping , YIN Fu-qiang,. Secondary development of elastic brittle constitutive model of discontinuous deformation analysis for rock failure [J]. , 2014, 35(8): 2144-2149.
[7] CHEN Zi-quan,LI Tian-bin,CHEN Guo-qing,ZHANG Hang. Experimental study of acoustic emission characteristics of sandstone under hydro-mechanical coupling action [J]. , 2014, 35(10): 2815-2822.
[8] TIAN Yong,YU Ran-gang. Energy analysis of limestone during triaxial compression under different confining pressures [J]. , 2014, 35(1): 118-122.
[9] CHEN Yun-juan,LI Shu-cai,ZHU Wei-shen,WANG Wen,WANG Jing. A full-column shearing anchor bolt of discontinue deformation analysis for rock failure [J]. , 2014, 35(1): 293-297.
[10] ZHU Xing ,XU Qiang ,TANG Ming-gao ,FU Xiao-min ,ZHOU Jian-bin . Experimental study of infrasound wave generated by typical rock fracture [J]. , 2013, 34(5): 1306-1312.
[11] LI Ya-li, YU Huai-chang, LIU Han-dong. Study of creep constitutive model of silty mudstone under triaxial compression [J]. , 2012, 33(7): 2035-2040.
[12] DING Jin-hua , TONG Jun , ZHANG Jing , ZHOU Wu-hua . Study of influence of environmental factors on geogrid creep property [J]. , 2012, 33(7): 2048-2054.
[13] TIAN Guan-feng , TANG Lian-sheng. Lateral stress relaxation of soil under confined compression condition [J]. , 2012, 33(3): 783-787.
[14] ZHENG De-shuai , GAO De-li , FENG Jiang-peng. A model for downhole rock drillability prediction under real drilling condition [J]. , 2012, 33(3): 859-863.
[15] ZHENG De-shuai, FENG Jiang-peng. Mechanism of effect of downhole pressures on rock failure and its applications [J]. , 2011, 32(S1): 205-208.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!