Research on Landscape Limestone Damage and Deformation under Uniaxial Compression Based on Acoustic Emission

Abstract:

In order to establish the relation between acoustic emission parameter and rock mechanical damage mechanism, as well as to better figure out landscape limestone damage and deformation influenced by uniaxial compression, MTS815 rock mechanical electro-hydraulic servo test system and 8CHSPCI-2 acoustic emission and detection system are applied to implement a test and research on damage evolution of limestone under uniaxial compression and the corresponding acoustic emission feature. On this basis, the acoustic emission feature of limestone under uniaxial compression is analyzed. Moreover, based on the damage variable of normalized accumulated emission ringing count, the uniaxial compression limestone damage model based on acoustic emission feature is established, and the damage evolution curve and equation of limestone is figured out as well. Shown by the research, acoustic emission information reflects the internal damage of limestone, and is closely related with densification of inner original fracture, as well as emerging, developing, and merging of new fractures. The acoustic emission feature of limestone perfectly describes its deformation and damage evolution.

• Periodical: Applied Mechanics and Materials (Volumes 423-426)
• Pages: 914-919
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.914
• Online since: September 2013
• Authors: Yong Qin Xiao, Yi Ping Wan, Bao Xian Liu
• Keywords: Accumulated Acoustic Emission Ringing Count, Acoustic Emission (AE), Damage and Deformation, Landscape Limestone

References

[1] 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.

[2] YUAN Ziqing, TANG Lizhong. Experimental research on acoustic emission characteristics of burst-prone rocks [J]. Chinese Journal of Underground Space and Engineering, 2008, 4(1): 94-98.

[3] XIE Qiang, ZHANG Yongxing, YU Xianbin. Study on acoustic emission of limestone in uniaxial compression test [J]. Journal of Chongqing Jianzhu University, 2002, 24(1): 19-22, 58.

[4] YANG Jian, WANG Lianjun. Study on mechanism of rock burst by acoustic emission testing [J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(20): 3 796-3 802. (in Chinese).

[5] YIN Xiangang, LI Shulin, TANG Haiyan. Study on strength fractal features of acoustic emission in process of rock failure [J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(19): 3 512-3 516.

[6] GAO Feng, LI Jianjun, LI Xiaoyin, et al. Fractal analysis of the characteristics of acoustic emission of rock [J]. Journal of Wuhan University of Technology (Natural Sciences), 2005, 27(7): 67-69.

[7] ZHANG Ru, XIE Heping, LIU Jianfeng, et al. Experimental study on 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.

[8] CAO Shugang, LIU Yanbao, ZHANG Liqiang, et al. Experiment on acoustic emission of outburst-hazardous coal under uniaxial compression and creep [J]. Journal of China Coal Society, 2007, 32 (12): 1 264-1 268.

[9] CHEN Jingtao. Experimental study on triaxial compression deformation and acoustic emission property of rock [J]. Journal of Wuhan University of Technology, 2008, 30 (2): 94-96, 118.

[10] LIU Baoxian, HUANG Jinglin, WANG Zeyun, et al. Study on damage evolution and acoustic emission character of coal-rock under uniaxial compression. Chinese Journal of Rock Mechanics and Engineering, 2009, 28 (S1): 3234-3238.