Investigating the mechanical and acoustic emission characteristics of brittle failure around a circular opening under uniaxial loading

Peng Li; Fen-hua Ren; Mei-feng Cai; Qi-feng Guo; Hao-fei Wang; Kang Liu

doi:10.1007/s12613-019-1887-5

Volume 26 Issue 10

Oct. 2019

Turn off MathJax

Article Contents

Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2019 > 26(10): 1217-1230

Peng Li, Fen-hua Ren, Mei-feng Cai, Qi-feng Guo, Hao-fei Wang, and Kang Liu, Investigating the mechanical and acoustic emission characteristics of brittle failure around a circular opening under uniaxial loading, Int. J. Miner. Metall. Mater., 26(2019), No. 10, pp. 1217-1230. https://doi.org/10.1007/s12613-019-1887-5

Cite this article as:

Peng Li, Fen-hua Ren, Mei-feng Cai, Qi-feng Guo, Hao-fei Wang, and Kang Liu, Investigating the mechanical and acoustic emission characteristics of brittle failure around a circular opening under uniaxial loading, Int. J. Miner. Metall. Mater., 26(2019), No. 10, pp. 1217-1230. https://doi.org/10.1007/s12613-019-1887-5

Citation:

PDF( 8221 KB)

Research Article

Investigating the mechanical and acoustic emission characteristics of brittle failure around a circular opening under uniaxial loading

+ Author Affiliations

Corresponding author:
Fen-hua Ren E-mail: renfh_2001@163.com
Received: 9 March 2019; Revised: 2 July 2019; Accepted: 8 July 2019

Abstract

Abstract

The size of underground openings in rock masses in metal mines is critical to the performance of the openings. In this study, the mechanical and acoustic emission (AE) characteristics of brittle rock-like specimens containing a circular opening with different ratios of opening diameter to sample size λ (λ=0.1, 0.13, 0.17, 0.2, and 0.23) were investigated under uniaxial compression with AE monitoring. The results indicate that the opening size strongly affected the peak strength and the elastic modulus. Crack initiation first started from the upper surface of the specimens, not from the periphery of the openings. Tensile and shear cracks coexisted on the roof and floor of the specimens, whereas tensile cracks were dominant on the two sides. The fracture mode of samples with openings was partially affected by the relative size of the pillars and openings. The AE response curves (in terms of counts, cumulative energy, cumulative counts, and b-value) show that brittle failure was mainly a progressive process. Moreover, the AE information corresponded well with microcrack evolution in the samples and thus can be used to predict sample failure.
- rock mechanics;
- circular opening;
- opening size;
- uniaxial compression;
- acoustic emission

FullText(HTML)

Supplements(0)

References(31)

References

[1]	R. Pusch and R. Stanfors, The zone of disturbance around blasted tunnels at depth, Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 29(1992), No. 5, p. 447.
[2]	M. Sagong, D. Park, J. Yoo, and J.S. Lee, Experimental and numerical analyses of an opening in a jointed rock mass under biaxial compression, Int. J. Rock Mech. Min. Sci., 48(2011), No. 7, p. 1055.
[3]	C.D. Martini, R.S. Read, and J.B. Martino, Observations of brittle failure around a circular test tunnel, Int. J. Rock Mech. Min. Sci., 34(1997), No. 7, p. 1065.
[4]	H. Kratzsch, Mining Subsidence Engineering, Springer, Berlin, 1983, p. 92.
[5]	A. Fakhimi, F. Carvalho, T. Ishida, and J.F. Labuz, Simulation of failure around a circular opening in rock, Int. J. Rock Mech. Min. Sci., 39(2002), No. 4, p. 507.
[6]	Y.L. Gui, Z.Y. Zhao, C. Zhang, and S.Q. Ma, Numerical investigation of the opening effect on the mechanical behaviours in rocks under uniaxial loading using hybrid continuum-discrete element method, Comput. Geotech., 90(2017), p. 55.
[7]	L. Weng, X.B. Li, A. Taheri, Q.H. Wu, and X.F. Xie, Fracture evolution around a cavity in brittle rock under uniaxial compression and coupled static–dynamic loads, Rock Mech. Rock Eng., 51(2018), No. 2, p. 531.
[8]	R.H. Cao, P. Cao, H. Lin, G.W. Ma, X. Fan, and X.G. Xiong, Mechanical behavior of an opening in a jointed rock-like specimen under uniaxial loading: Experimental studies and particle mechanics approach, Arch. Civ. Mech. Eng., 18(2018), No. 1, p. 198.
[9]	V. Hajiabdolmajid, P.K. Kaiser, and C.D. Martin, Modelling brittle failure of rock, Int. J. Rock Mech. Min. Sci., 39(2002), No. 6, p. 731.
[10]	E. Eberhardt, D. Stead, B. Stimpson, and R.S. Read, Identifying crack initiation and propagation thresholds in brittle rock, Can. Geotech. J., 35(1998), No. 2, p. 222.
[11]	X.G. Zhao, M. Cai, J. Wang, and L.K. Ma, Damage stress and acoustic emission characteristics of the Beishan granite, Int. J. Rock Mech. Min. Sci., 64(2013), p. 258.
[12]	M.Q. You, C.D. Su, and X.S. Li, Study on relation between mechanical properties and longitudinal wave velocities for damaged rock samples, Chin. J. Rock Mech. Eng., 27(2008), No. 3, p. 458.
[13]	Q.H. Wu, M.Q. You, and C.D. Su, Mechanical parameters and their relativity of anisotropy granite, J. Cent. South Univ. Sci. Technol., 46(2015), No. 6, p. 2216.
[14]	H.Q. Zhang, H. Shi, H.W. Jing, Y. Wu, and H. Pu, Numerical study of remote fracturing around a circular opening in rock, Eur. J. Environ. Civ. Eng., 2018.
[15]	S.D. Xu, Y.H. Li, and J.P. Liu, Detection of cracking and damage mechanisms in brittle granites by moment tensor analysis of acoustic emission signals, Acoust. Phys., 63(2017), No. 3, p. 359.
[16]	D.Y. Li, Q.Q. Zhu, Z.L. Zhou, X.B. Li, and P.G. Ranjith, Fracture analysis of marble specimens with a hole under uniaxial compression by digital image correlation, Eng. Fract. Mech., 183(2017), p. 109.
[17]	A. Basu and D.A. Mishra, A method for estimating crack-initiation stress of rock materials by porosity, J. Geol. Soc. India, 84(2014), No. 4, p. 397.
[18]	X.P. Lai, L.H. Wang, and M.F. Cai, Couple analyzing the acoustic emission characters from hard composite rock fracture, J. Univ. Sci. Technol. Beijing, 11(2004), No. 2, p. 97.
[19]	J.L. Pei, W.P. Fei, and J.F. Liu, Spatial evolution and fractal characteristics of natural fractures in marbles under uniaxial compression loading based on the source location technology of acoustic emission, Environ. Earth Sci., 75(2016), No. 9, p. 828.
[20]	X. Wang, Z.J. Wen, Y.J. Jiang, and H. Huang, Experimental study on mechanical and acoustic emission characteristics of rock-like material under non-uniformly distributed loads, Rock Mech. Rock Eng., 51(2018), No. 3, p. 729.
[21]	B.J. Meyer, New Objective Method for the Determination of Crack Initiation Stress Using Acoustic Emission Data, A[Dissertation], Colorado School of Mines, Golden, 2018, p. 23.
[22]	T. Schumacher, New Acoustic Emission Applications in Civil Engineering[Dissertation], Oregon State University, Corvallis, 2010, p. 22.
[23]	Q.Q. Zhu, D.Y. Li, Z.Y. Han, X.B. Li, and Z.L. Zhou, Mechanical properties and fracture evolution of sandstone specimens containing different inclusions under uniaxial compression, Int. J. Rock Mech. Min. Sci., 115(2019), p. 33.
[24]	Z.T. Bieniawski, Stability concept of brittle fracture propagation in rock, Eng. Geol., 2(1967), No. 3, p. 149.
[25]	M.V.M.S. Rao and K.J.P. Lakshmi, Analysis of b-value and improved b-value of acoustic emissions accompanying rock fracture, Curr. Sci., 89(2005), No. 9, p. 1577.
[26]	L.M. Zhang, S.Q. Ma, M.Y. Ren, S.Q. Jiang, Z.Q. Wang, and J.L. Wang, Acoustic emission frequency and b value characteristics in rock failure process under various confining pressures, Chin. J. Rock Mech. Eng., 34(2015), No. 10, p. 2057.
[27]	X.L. Lei, K. Kusunose, M.V.M.S. Rao, O. Nishizawa, and T. Satoh, Quasi-static fault growth and cracking in homogeneous brittle rock under triaxial compression using acoustic emission monitoring, J. Geophys. Res. Solid Earth, 105(2000), No. B3, p. 6127.
[28]	Y.H. Huang, S.Q. Yang, M.R. Hall, W.L. Tian, and P.F. Yin, Experimental study on uniaxial mechanical properties and crack propagation in sandstone containing a single oval cavity, Arch. Civ. Mech. Eng., 18(2018), No. 4, p. 1359.
[29]	B.J. Carter, E.Z. Lajtai, and A. Petukhov, Primary and remote fracture around underground cavities, Int. J. Numer. Anal. Methods Geomech., 15(1991), No. 1, p. 21.
[30]	H. Munoz and A. Taheri, Specimen aspect ratio and progressive field strain development of sandstone under uniaxial compression by three-dimensional digital image correlation, J. Rock Mech. Geotech. Eng., 9(2017), No. 4, p. 599.
[31]	H. Güneyli and T. Rüşen, Effect of length-to-diameter ratio on the unconfined compressive strength of cohesive soil specimens, Bull. Eng. Geol. Environ., 75(2016), No. 2, p. 793.