Abstract
Сhanges in acoustic emission spectra of coal samples from the Kuznetsk and Pechora Basins are experimentally studied in uniaxial and triaxial (Karman-type) compression tests. It is shown that the acoustic emission spectral patterns change considerably at the pre-failure stage in the samples under uniaxial compression: the amplitudes of low-frequency components grow while those of high frequencies reduce. Under the Karman-type compression, the amplitudes of low-frequency signals grow while the high-frequency amplitudes do not change much, because lateral hydrostatic pressure impedes opening of vertical fractures.
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Oparin, V.N., Sashurin, A.D., Leont’ev, A.V., et al., Destruktsiya zemnoi kory i protsessy samoorganizatsii v oblasti sil’nogo tekhnogennogo vozdeistviya (Earth Crust Destruction and Self-Organization in the Areas of Heavy Mining-Induced Impact), Novosibirsk: IGD SO RAN, 2012.
Aduskin, V.V. and Oparin, V.N., Aduskin, V.V. and Oparin, V.N., From the Alternating-Sign Explosion Response of Rocks to the Pendulum Waves in Stressed Geomedia. Parts I–III, J. Min. Sci., 2012, vol. 48, no. 2, pp. 203–222; 2013, vol. 49, no. 2, pp. 175–209; 2014, vol. 50, no. 4, pp. 623–645.
Oparin, V.N., Emanov, A.F., Vostrikov, V.I., and Tsibizov, L.V., Kinetics of Seismic Emission in Coal Mines in Kuzbass, J. Min. Sci., 2013, vol. 49, no. 4, pp. 521–536.
Nazarova, L.A., Nazarov, L.A., and Protasov, M.I., Reconstruction of 3D Stress Field in Coal–Rock Mass by Solving Inverse Problem Using Tomography Data, J. Min. Sci., 2016, vol. 52, no. 4, pp. 623–631.
Nikolenko, P.V. and Nabatov, V.V., Interference Protection in Geoacoustic Control of Critical Stresses in Rocks, Gorny Zh., 2015, no. 9, pp. 33–36.
Ivanov, V.I. and Belov, N.I., Influence of the Stress Tensor Components on the Rock Mass Stress State Estimate by Elastic Wave Velocities, Geofizicheskie sposoby kontrolya napryazhenii i deformatsii (Geophysical Methods Stress and Strain Control), Novosibirsk: IGD SO AN SSSR, 1985, pp. 3–6.
Feng, Z., Mingjie, X., Zhonggao, M., Liang, C., Zhu, Z., and Juan, L., An Experimental Study on the Correlation between the Elastic Wave Velocity and Microfractures in Coal Rock from the Qingshui Basin, J. of Geophysics and Engineering, 2012, vol. 9, no. 6, pp. 691–696.
Zheng, Z., Khodaverdian, M., and McLennan, J.D., Static and Dynamic Testing of Coal Specimens, 1991, SCA Conference, 1991, paper 9120.
Nazarov, L.A., Nazarova, L.A., Romensii, E.I., Cheverda, V.A., and Epov, M.I., Acoustic Method for Defining the Stress State of a Rock Mass Based on Solution of the Seismic Inverse Problem, Dokl. Earth Sciences, 2016, vol. 466, no. 2, pp. 210–213.
Shkuratnik, V.L., Nikolenko, P.V., and Koshelev, A.E., Stress Dependence of Elastic P-Wave Velocity and Amplitude in Coal Specimens under Varied Loading Conditions, J. Min. Sci., 2016, vol. 52, no. 5, pp. 873–877.
Nikolenko, P.V. and Shkuratnik, V.L., Acoustic Emission in Composites and Applications for Stress Monitoring in Rock Masses, J. Min. Sci., 2014, vol. 50, no. 6, pp. 1088–1093.
Kong, X., Wang, E., He, X., Li, D., and Liu, Q., Time-Varying Multifractal of Acoustic Emission about Coal Samples Subjected to Uniaxial Compression, Chaos, Solutions and Fractals, 2017, vol. 103, pp. 571–577.
Xiao, F., Liu, G., Zhang, Z., Shen, Z., Zhang, F., and Wang, Y., Acoustic Emission Characteristics and Stress Release Rate of Coal Samples in Different Dynamic Destruction Time, Int. J. of Mining Science and Technology, 2016, vol. 26, issue 6, pp. 981–988.
Liu, Q., Zhang, R., Gao, M., Li, G., and Zhang, Z., Acoustic Emission Characteristics and Comprehensive Failure Precursors of Coal under Unloading Conditions, Sichuan Daxue Xuebao (Gongcheng Kexue Ban), J. of Sichuan University (Engineering Science Edition), 2016, vol. 48, pp. 67–74.
Xiao, F., Wang, Y., and Zhao, R., Coal’s Damage Evaluation under Uniaxial Compression and Its Characteristics by Acoustic Emission, Electronic J. of Geotechnical Engineering, 2016, vol. 21, no. 6, pp. 2365–2378.
Shkuratnik, V.L., Filimonov, Yu.L., and Kuchurin, S.V., Features of the Kaiser Effect in Coal Specimens at Different Stages of the Triaxial Axisymmetric Deformation, J. Min. Sci., 2007, vol. 43, no. 1, pp. 1–7.
Kuksenko, V.S., Stanchits, S.A., and Tomilin, N.G., Evaluation of the Dimensions of Growing Cracks and Unloading Regions on the Basis of Acoustic Signal Parameters, Mechanics of Composite Materials, 1983, vol. 19, no. 3, pp. 403–410.
Kuksenko, V.S., Mansurov, V.A., Manzhikov, B.Ts., Frolov, D.I., Stanchits, S.A., and Inzhevatkin, I.E., Similarity in Rock Failure Process at Different Scales, Izv. AN SSSR. Fiz. Zemli, 1990, no. 6, pp. 66–70.
Yamshchikov, V.S. and Shkuratnik, V.L., Acoustic Spectroscopy of Massive Rock, J. Soviet Mining, 1978, vol. 14, no. 2, pp. 223–229.
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Original Russian Text © V.L. Shkuratnik, P. V. Nikolenko, and A.E. Koshelev, 2017, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2017, No. 5, pp. 23–28.
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Shkuratnik, V.L., Nikolenko, P.V. & Koshelev, A.E. Spectral Characteristics of Acoustic Emission in Loaded Coal Specimens for Failure Prediction. J Min Sci 53, 818–823 (2017). https://doi.org/10.1134/S1062739117052825
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DOI: https://doi.org/10.1134/S1062739117052825