AE Regularity of Coal Failure Shear Deformation Localization under Triaxial Dynamical Loading


Article Preview

Based on MTS-815.02 servo-controlled rock mechanics and acoustic emission (AE) integrated test system, the strength, shear deformation localization and damage AE-energy-rate characteristics process of coal specimen from Weihuliang Coal Mine under tri-axial loading were analyzed. A new model of Weibull distribution on the AE higher energy-rate emergence interval under tri-axial loading had been established, the total probability of coal sample localization failure in an interval is proposed. Then, the forecasting analysis of the coal fracture failure can be studied. The results indicate that the Weibull distribution of the AE higher energy-rate emergence were similar to the experimental results that measured. It is very important to the identification and ration prediction of coal failure in the mining.



Edited by:

Han Zhao






F. H. Ren and X. P. Lai, "AE Regularity of Coal Failure Shear Deformation Localization under Triaxial Dynamical Loading", Applied Mechanics and Materials, Vols. 130-134, pp. 2235-2239, 2012

Online since:

October 2011




[1] XIE Heping. Review and Prospect of Mechanics of Jointed Rock Masses and Its Applications. Engineering Science, 2003, 5(3): 31.

[2] Xia Mengfen, Han Wensheng, Ke Fujiu, Bai Yilong. Statisyical Meso-Scopic damage mechanlcs and damage evolution induced catastrophe. Advances in Mechanics, 1995, 25(1): 1.

DOI: 10.1016/0375-9601(94)90847-8

[3] XIE Heping, Peng Ruidong, Zhou Hongwei, Juyang. Progress of rock's strength theory base on fracturemechanics and damagemechanics. Progress in Natural Science, 2004, 10(1): 1086.

[4] CAI Mei feng, LAI Xing ping. Statistical analysis of the character of acoustic emission for nonlinear dynamical damage in mined out areas supported by composite rock materials. Chinese Jounal of Geotechnical Engineering, 2003, 25(1): 51.

[5] SHI P W, LAI X P, GAO Z N. Damage mechanics model of top coal in steep top caving coal. Journal of University of Science and Technology Beijing(English Edition), 2003, 10(1): 8.

[6] Bieniawski Z.T. Stability concept of brittle fracture propagation in rock, Engineering and Geology, 1967, 2(3): 149.

DOI: 10.1016/0013-7952(67)90014-2

[7] T. Szwedzicki. Pre-and post-failure ground behaviour: case studies of surface crown pillar collapse. International Journal of Rock Mechanics and Mining Sciences, 1999, 36: 351.

DOI: 10.1016/s0148-9062(99)00003-0

[8] Locker D A. The role of AE in the study of rock failure. International Journal of Rock Mechanics and Mining Sciences, 1993, 30(7): 883.

[9] C A Tang. Numerical simulation of progressive rock failure and associated seismicity. International Journal of Rock Mechanics and Mining Sciences, 1997, 34 (2): 249.

DOI: 10.1016/s0148-9062(96)00039-3

[10] Li Shulin, Yin Xiangang, Wang Yongjia, Fang Haiyan. Studies on acoustic emission characteristics of uni-axial compressive rock failure. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(15): 2499.

In order to see related information, you need to Login.