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“Double Peak” of Dynamic Strengths and Acoustic Emission Responses of Coal Masses Under Dynamic Loading

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Abstract

In recent years, the depth, intensity and complexity of coal mining in China has continued to increase. Meanwhile rockburst disasters, especially fault-slip bursts, have become even more severe. Research on precursor characteristics and early warning methods need to be in-depth, as rock burst disasters severely restrict the safety production of coal mines. Stress waves (dynamic loading) caused by the rupture of the roof of overlying rock layers, or the slipping activity of faults act on coal and rock masses, can easily cause the sudden instability of coal and rock masses and induce rockburst disasters in a high in situ stress environment. Therefore, this article is about a study of fracture characteristics of coal mass and its acoustic emission (AE) signal response under dynamic loading. The results show that the dynamic strength presented a “double peak” pattern. It rapidly dripped after two crests appear, and the second crest was higher than the first crest. With increase in bullet velocity (and applied axial static load conditions), the dynamic strength–strain curve shifted upward gradually. The difference between the two peaks was relatively stable. The coal sample with cracks and pores was damaged significantly at the first wave crest, the damage area was concentrated mainly around the ring of the sample. The proportions of the meta-instability stage in total process time increased with increase in impact velocity applied on the samples, which ranged from 3.17 to 5.94%. The axial static load did not show a significant role affecting proportion of the meta-instability phase in whole process time. The AE peak count and energy increased linearly with increase in impact velocity, while they decreased with increase in axial static load. When employing a same impact velocity, the difference between the two peaks increased with increase in axial static load. Because the first wave crest appeared when the coal body ruptured, the accurate rupture time of the coal body can be monitored by the AE count and energy. The paper sheds some light on exploring the fractural evolution process of coal and rock masses under dynamic loading, as well as being a reference basis for the evolutional mechanism of rockburst under a far-field fluctuational load condition. The research results are helpful to further improve the prediction accuracy and control of rock burst in coal mines.

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References

  • Ai, D., Zhao, Y., Wang, Q., & Li, C. (2020). Crack propagation and dynamic properties of coal under SHPB impact loading: Experimental investigation and numerical simulation. Theoretical and Applied Fracture Mechanics, 105, 102393.

    Article  Google Scholar 

  • Chao, H., Wang, Z., Wang, L., Sun, Y., & Shen, J. (2017). Implication of creep slipping before main shock for earthquake prediction: Evidence from nano/micro-scale structure of gouges. Journal of Nanoscience and Nanotechnology, 17(9), 6852–6858. https://doi.org/10.1166/jnn.2017.14404

    Article  Google Scholar 

  • Chen, Y., Zuo, J., Liu, D., & Wang, Z. (2019). Deformation failure characteristics of coal–rock combined body under uniaxial compression: Experimental and numerical investigations. Bulletin of Engineering Geology and the Environment, 78(5), 3449–3464.

    Article  Google Scholar 

  • Di, Y., Wang, E., Li, Z., Liu, X., & Li, B. (2021). Method for EMR and AE interference signal identification in coal rock mining based on recurrent neural networks. Earth Science Informatics, 14(3), 1521–1536.

    Article  Google Scholar 

  • Dou, L., Cai, W., Cao, A., & Guo, W. (2018). Comprehensive early warning of rock burst utilizing microseismic multi-parameter indices. International Journal of Mining Science and Technology, 28(5), 767–774.

    Article  Google Scholar 

  • Dou, L., Chen, T., Gong, S., He, H., & Zhang, S. (2012). Rockburst hazard determination by using computed tomography technology in deep workface. Safety Science, 50(4), 736–740.

    Article  Google Scholar 

  • Feng, X., Zhang, Q., Ali, M. (2019). Explosion-induced stress waves propagation in interacting faults system: Numerical modelling and implications for Chaoyang Coal Mine. Shock and Vibration. Article ID 5856080.

  • Feng, X., Zhang, C., Chen, B., Feng, G., Zhao, Z., Ming, H., & Zhou, H. (2012). Dynamical control of rockburst evolution process. Chinese Journal of Rock Mechanics and Engineering, 31(10), 1983–1997.

    Google Scholar 

  • Feng, X., & Zhang, Q. (2018). The effect of backfilling materials on the deformation of coal and rock strata containing multiple goaf: A numerical study. Minerals, 8(6), 224.

    Article  Google Scholar 

  • Feng, X., Zhang, Q., & Ali, M. (2020a). 3D modelling of the strength effect of backfill-rocks on controlling rockburst risk: A case study. Arabian Journal of Geosciences, 13(3), 128.

    Article  Google Scholar 

  • Feng, X., Zhang, Q., Wang, E., Ali, M., & DongZhang, Z. G. (2020b). 3D modeling of the influence of a splay fault on controlling the propagation of nonlinear stress waves induced by blast loading. Soil Dynamics and Earthquake Engineering, 138, 106335.

    Article  Google Scholar 

  • Gerberich, W. W., & Hartbower, C. E. (1967). Some observations on stress wave emission as a measure of crack growth. International journal of fracture mechanics, 3(3), 185–192.

    Article  Google Scholar 

  • Ghezzehei, T. A., & Or, D. (2003). Pore-space dynamics in a soil aggregate bed under a static external load. Soil Science Society of America Journal, 67(1), 12–19.

    Article  Google Scholar 

  • He, M., Ren, F., & Liu, D. (2018). Rockburst mechanism research and its control. International Journal of Mining Science and Technology, 28(5), 829–837.

    Article  Google Scholar 

  • He, X., Zhou, C., Song, D., Li, Z., Cao, A., He, S., & Khan, M. (2021). Mechanism and monitoring and early warning technology for rockburst in coal mines. International Journal of Minerals Metallurgy and Materials, 28(7), 1097–1111.

    Article  Google Scholar 

  • Huang, B., & Liu, J. (2013). The effect of loading rate on the behavior of samples composed of coal and rock. International Journal of Rock Mechanics and Mining Sciences, 61, 23–30.

    Article  Google Scholar 

  • Jiang, L., Wu, Q., Wu, Q., Wang, P., Xue, Y., Kong, P., & Gong, B. (2019). Fracture failure analysis of hard and thick key layer and its dynamic response characteristics. Engineering Failure Analysis, 98, 118–130.

    Article  Google Scholar 

  • Jiang, Y., Wang, T., Song, Y., Wang, X., & Zhang, W. (2013). Experimental study on the stick-slip process of coal-rock composite samples. Journal of China Coal Society, 38(2), 177–182.

    Google Scholar 

  • Ju, Y., Zheng, J., Epstein, M., Sudak, L., Wang, J., & Zhao, X. (2014). 3D numerical reconstruction of well-connected porous structure of rock using fractal algorithms. Computer Methods in Applied Mechanics and Engineering, 279, 212–226.

    Article  Google Scholar 

  • Kidybiński, A. (1986). Design criteria for roadway supports to resist dynamic loads. International Journal of Mining and Geological Engineering, 4(2), 91–109.

    Article  Google Scholar 

  • Kim, B. H., Walton, G., Larson, M. K., & Berry, S. (2021). Investigation of the anisotropic confinement-dependent brittleness of a Utah coal. International Journal of Coal Science & Technology, 8(2), 274–290.

    Article  Google Scholar 

  • Kong, X., Wang, E., Li, S., Lin, H., Zhang, Z., & Ju, Y. (2020). Dynamic mechanical characteristics and fracture mechanism of gas-bearing coal based on SHPB experiments. Theoretical and Applied Fracture Mechanics, 105, 102395.

    Article  Google Scholar 

  • Kramadibrata, S., Simangunsong, G. M., Matsui, K., & Shimada, H. (2011). Role of acoustic emission for solving rock engineering problems in Indonesian underground mining. Rock mechanics and rock engineering, 44(3), 281–289.

    Article  Google Scholar 

  • Li, S., Long, K., Zhang, Z., & Yao, X. (2021a). Cracking process and energy dissipation of sandstone under repetitive impact loading with different loading rates: From micro to macro scale. Construction and Building Materials, 302, 124123.

    Article  Google Scholar 

  • Li, X., Liu, Z., Feng, X., Zhang, H., & Feng, J. (2021b). Effects of acid sulfate and chloride ion on the pore structure and mechanical properties of sandstone under dynamic loading. Rock Mechanics and Rock Engineering, 54, 6105–6121.

    Article  Google Scholar 

  • Li, X., Peng, K., Peng, J., & Hou, D. (2021c). Experimental investigation of cyclic wetting-drying effect on mechanical behavior of a medium-grained sandstone. Engineering Geology, 293, 106335.

    Article  Google Scholar 

  • Li, X., Peng, K., Peng, J., & Xu, H. (2021d). Effect of cyclic wetting-drying treatment on strength and failure behavior of two quartz-rich sandstones under direct shear. Rock Mechanics and Rock Engineering, 54, 5953–5960.

    Article  Google Scholar 

  • Li, X., Wang, E., Li, Z., Liu, Z., Song, D., & Qiu, L. (2016). Rock burst monitoring by integrated microseismic and electromagnetic radiation methods. Rock Mechanics and Rock Engineering, 49(11), 4393–4406.

    Article  Google Scholar 

  • Li, X., Zou, Y., & Zhou, Z. (2014). Numerical simulation of the rock SHPB test with a special shape striker based on the discrete element method. Rock Mechanics and Rock Engineering, 47(5), 1693–1709.

    Article  Google Scholar 

  • Liu, H., Yu, B., Liu, J., & Wang, T. (2019). Investigation of impact rock burst induced by energy released from hard rock fractures. Arabian Journal of Geosciences, 12(12), 1–12.

    Article  Google Scholar 

  • Liu, X., & Wang, E. (2018). Study on characteristics of EMR signals induced from fracture of rock samples and their application in rockburst prediction in copper mine. Journal of Geophysics and Engineering, 15(3), 909–920.

    Article  Google Scholar 

  • Lu, J., Yin, G., Gao, H., Li, X., Zhang, D., Deng, B., Wu, M., & Li, M. (2020). True triaxial experimental study of disturbed compound dynamic disaster in deep underground coal mine. Rock Mechanics and Rock Engineering, 53, 2347–2364.

    Article  Google Scholar 

  • Ma, J., Sherman, S., & Guo, Y. (2012). Identification of meta-instable stress state based on experimental study of evolution of the temperature field during stick-slip instability on a 5 bending fault. Science China Earth Sciences, 42(05), 633–645.

    Google Scholar 

  • Meng, T., Yue, Y., Ma, J., Jiao, B., Niu, H., Wen, L., & Yongbin, X. (2020). Use of DC voltage fluctuation method to investigate real-time mode I and mode II subcritical crack growth behavior in gypsum rock. Engineering Fracture Mechanics, 234, 107104.

    Article  Google Scholar 

  • Mudau, A., Govender, R. A., & Stacey, T. R. (2016). A step towards combating rockburst damage by using sacrificial support. Journal of the Southern African Institute of Mining and Metallurgy, 116(11), 1065–1074.

    Article  Google Scholar 

  • Mydlikowski, R., & Maniak, K. (2021). Dynamics of autonomous rock electromagnetic radiation measurement instrumentation. Bulletin of the Polish Academy of Sciences-Technical Sciences, 69(5), e138567.

    Google Scholar 

  • Pan, R., Cheng, Y., Yuan, L., Yu, M., & Dong, J. (2014). Effect of bedding structural diversity of coal on permeability evolution and gas disasters control with coal mining. Natural Hazards, 73(2), 531–546.

    Article  Google Scholar 

  • Pyrak-Nolte, L. J., Myer, L. R., & Cook, N. G. (1990). Transmission of seismic waves across single natural fractures. Journal of Geophysical Research: Solid Earth, 95(B6), 8617–8638.

    Article  Google Scholar 

  • Ravi-Chandar, K., & Knauss, W. G. (1984). An experimental investigation into dynamic fracture: IV. On the interaction of stress waves with propagating cracks. International Journal of Fracture, 26(3), 189–200.

    Article  Google Scholar 

  • Ren, Y., Ma, J., Liu, P., & Chen, S. (2018). Experimental study of thermal field evolution in the short-impending stage before earthquakes. Pure and Applied Geophysics, 175(7), 2527–2539.

    Article  Google Scholar 

  • Reuter, M., Krach, M., Kiessling, U., & Velisler, J. U. (2021). Method for seismic and acoustic monitoring of longwall face areas in coal mines. Journal of Mining Science, 57(1), 24–31.

    Article  Google Scholar 

  • Sobczyk, J. (2011). The influence of sorption processes on gas stresses leading to the coal and gas outburst in the laboratory conditions. Fuel, 90(3), 1018–1023.

    Article  Google Scholar 

  • Song, C., Ma, J., Wang, H., & Zhang, L. (2018). Study on meta-instability stage and instable section of the fault before strong earthquake: Taking western section of Southern Tianshan as an example. Chinese Journal of Geophysics, 61(2), 604–615.

    Google Scholar 

  • Song, H., Zuo, J., Liu, H., & Zuo, S. (2021). The strength characteristics and progressive failure mechanism of soft rock-coal combination samples with consideration given to interface effects. International Journal of Rock Mechanics and Mining Sciences, 138, 104593.

    Article  Google Scholar 

  • Srinivasan, V., Tripathy, A., Gupta, T., & Singh, T. N. (2020). An investigation on the influence of thermal damage on the physical, mechanical and acoustic behavior of Indian Gondwana shale. Rock Mechanics and Rock Engineering, 53(6), 2865–2885.

    Article  Google Scholar 

  • Trivino, L., & Mohanty, B. (2015). Assessment of crack initiation and propagation in rock from explosion-induced stress waves and gas expansion by cross-hole seismometry and FEM–DEM method. International Journal of Rock Mechanics and Mining Sciences, 77, 287–299.

    Article  Google Scholar 

  • Vardar, O., Wei, C., Zhang, C., & Canbulat, I. (2022). Numerical investigation of impacts of geological faults on coal burst proneness during roadway excavation. Bulletin of Engineering Geology and the Environment, 81(1), 1–12.

    Article  Google Scholar 

  • Wang, K., & Du, F. (2020). Coal-gas compound dynamic disasters in China: A review. Process Safety and Environmental Protection, 133, 1–17.

    Article  Google Scholar 

  • Wang, Y., & Yang, R. (2017). Study of the dynamic fracture characteristics of coal with a bedding structure based on the NSCB impact test. Engineering Fracture Mechanics, 184, 319–338.

    Article  Google Scholar 

  • Xie, H., & Pariseau, W. G. (1993). Fractal character and mechanism of rock bursts. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 30(4), 343–350.

    Article  Google Scholar 

  • Xu, J., Pu, H., & Sha, Z. (2021). Experimental study on the effect of brittleness on the dynamic mechanical behaviors of the coal measures sandstone. Advances in Civil Engineering, 2021, 6679333.

    Google Scholar 

  • Yang, R., Ding, C., Yang, L., Zhang, Y., & Xu, P. (2018). Behavior and law of crack propagation in the dynamic-static superimposed stress field. Journal of Testing and Evaluation, 46(6), 2540–2548.

    Google Scholar 

  • Yang, Z., Fan, C., Lan, T., Li, S., Wang, G., Luo, M., & Zhang, H. (2019). Dynamic mechanical and microstructural properties of outburst-prone coal based on compressive SHPB tests. Energies, 12(22), 4236.

    Article  Google Scholar 

  • Zhang, J., Guo, S., Zhang, X., Wang, L., Cao, Y., & Liu, G. (2021a). Dynamic damage constitutive model of plastic hardening-softening process of coal under impacting load. Journal of China Coal Society. https://doi.org/10.13225/j.cnki.jccs.2020.1984

    Article  Google Scholar 

  • Zhang, Q., Wang, E., Feng, X., Niu, Y., Ali, M., Lin, S., & Wang, H. (2020). Rockburst risk analysis during high-hard roof breaking in deep mines. Natural Resources Research, 29(6), 4085–4101.

    Article  Google Scholar 

  • Zhang, Q., Wang, E., Feng, X., Wang, C., Qiu, L., & Wang, H. (2021b). Assessment of rockburst risk in deep mining: an improved comprehensive index method. Natural Resources Research, 30(2), 1817–1834.

    Article  Google Scholar 

  • Zhao, Y., Xiao, H., & Huang, Y. (2014). Dynamic split tensile test of Brazilian disc of coal with split Hopkinson pressure bar loading. Journal of China Coal Society, 39(2), 286–291.

    Google Scholar 

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Acknowledgments

This project is supported by the National Science Foundation for Young Scientists of Jiangsu Province (BK20180644), National Natural Science Foundation of China (52004267), China Postdoctoral Science Foundation (2020M672235).

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Authors and Affiliations

  1. School of Safety Engineering, China University of Mining and Technology, Xuzhou, 221116, China

    Xiaojun Feng, Zeng Ding, Yunqiang Ju, Qiming Zhang & Muhammad Ali

  2. Henan Shenhuo Grp Co Ltd., Yongcheng, 476600, China

    Xiaojun Feng

  3. Department of Mining Engineering, Balochistan University of Information Technology, Engineering and Management Sciences, Quetta, Pakistan

    Muhammad Ali

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  1. Xiaojun Feng
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Correspondence to Xiaojun Feng.

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Feng, X., Ding, Z., Ju, Y. et al. “Double Peak” of Dynamic Strengths and Acoustic Emission Responses of Coal Masses Under Dynamic Loading. Nat Resour Res 31, 1705–1720 (2022). https://doi.org/10.1007/s11053-022-10066-3

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