Abstract
Along with the increase of mining depth, the dynamic disasters related to the instability and destruction of coal-rock are becoming more and more serious. In this paper, the uniaxial compression model of coal-rock was established by means of the micro particle flow PFC2D software firstly, and then the variation of stress field and damage field of coal-rock were analysed. Finally, the time–space constitutive model of coal-rock was discussed and modified. The research results show that: the compression stress field of coal-rock has obvious time–space effect, and along with the change of compressive stress, the stress field was transferred to the inner coal-rock body; the coal-rock damage evolution process has a similar temporal and spatial relations with the stress field evolution, the number of damage cracks were increasing with the constant change of compressive stress, and transferred to the inner coal-rock body with “string wave” feature; the time–space damage constitutive model of coal-rock established on the basis of local crack and the stress concentration factor of coal-rock was reasonable and effective, the damage degree of the whole coal-rock could be predicted by the variation of local coal-rock stress and cracks. In overall, the successful verification of the time–space relationship of coal-rock damage and stress transfer indicated that the possibility of using the constitutive model developed in this study to investigate coal-rock stability in coal mine.
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References
Cao S, Xian X (2001) Testing study on the characteristics of creep and damage of coal and other rocks. Chin J Rock Mech Eng 20(6):817–822
Carranza-Torres C, Fairhurst C (1999) The elasto-plastic response of underground excavations in rock masses that satisfy the Hoek-Brown failure criterion. Int J Rock Mech Min Sci 36(6):777–809
Cundall PA, Strack OD (1979) A discrete numerical model for granular assemblies. Geotechnique 29(1):47–65
Ge X, Ren J, Pu Y et al (1999) A real-time CT triaxial testing study off meso-damage evolution law of coal. Chin J Rock Mech Eng 18(5):497–502
Itasca Consulting Group (2008) PFC2D (particle flow code in 2dimensions) fish in PFC2D. Itasca Consulting Group, Minneapolis
Itasca Consulting Group Inc. (2004) Manual of particle flow code in 2-dimension (Version 3.10). Itasca Consulting Group Inc., Minneapolis
Iturrioz I, Lacidogna G, Carpinteri A (2013) Acoustic emission detection in concrete specimens: experimental analysis and lattice model simulations. Int J Damage Mech 23(3):327–358
Ju Y, Zuo J, Song Z et al (2007) Numerical simulation of stress distribution and displacement of rock strata of coal mines by means of DDA method. Chin J Geotech Eng 29(2):268–273
Kachanov LM (1958) Time rupture process under creep conditions. Izvestia Akademii Nauk SSSR, Otdelenie Tekhnicheskich Nauk 12(8):26–31
Khaled MM, Michael MM, Heather EL et al (2016) Analysis of the current rib support practices and techniques in U.S. coal mines. Int J Min Sci Technol 26(1):77–87
Kim J, Yi J, Kim J et al (2013) Fatigue life prediction methodology using entropy index of stress interaction and crack severity index of effective stress. Int J Damage Mech 22(22):375–392
Kupchella R, Stowe D, Xiao X et al (2015) Incorporation of material variability in the Johnson Cook model. Procedia Eng 103:318–325
Lemaitre J, Sermage JP, Desmorat R (1999) A two scale damage concept applied to fatigue. Int J Fract 97(1–4):67–81
Li Z (1987) Study on mechanism of coal and gas outburst in in-seam drivage. J China Coal Soc 1:17–27
Liu G, Zhao J, Song H et al (2008) Model experiments on the broken zone in intermittently jointed surrounding rock. J China Univ Min Technol 37(1):62–66
Matsuki K, Nakama S, Sato T (2009) Estimation of regional stress by FEM for a heterogeneous rock mass with a large fault. Int J Rock Mech Min Sci 46(1):31–50
Mizuno M, Okayasu M, Odagiri N (2010) Damage evaluation of piezoelectric ceramics from the variation of the elastic coefficient under static compressive stress. Int J Damage Mech 19(3):375–390
Murti V, Zhang W, Valliappan S (1991) Stress invariants in an orthotropic damage space. Eng Fract Mech 40(6):985–990
Peng Y, Qi Q, Wang Y et al (2010) Study of field measurement of mining induced coal fracture field and its application. J Rock Mech Eng 29(S2):4188–4193
Rabotnov YN (1969) Creep rupture. Applied mechanics. Springer, Berlin, pp 342–349
Ren J, Ge X (2001) Study of rock meso-damage evolution law and its constitutive model under uniaxial compression loading. Chin J Rock Mech Eng 20(4):425–431
Voyiadjis GZ, Kattan PI (2015) Investigation of the damage variable basic issues in continuum damage and healing mechanics. Mech Res Commun 68:89–94
Wen Z, Wang X, Song Z et al (2015) Study on bearing mechanical behaviour of the pre-damaged coal rock. J Mines Met Fuels 63(9):246–250
Xiang-he PENG, Chun-he YANG (2000) The damage and its description of concrete under complex loading history. Chin J Rock Mech Eng 19(2):157–164
Yin X (2008) Numerical tests on geotechnical properties of rock and soil materials. Wuhan Institute of rock and soil mechanics, Chinese Academy of Sciences, Wuhan
Zhang M, Xu Z, Pan Y (1991) A united instability theory on coal (rock) burst and outburst. J China Coal Soc 16(4):48–53
Zhang X, Ruan H, Jia C (2010) Progress in theory of damage mechanics of rock. Sichuan Build Sci Res 36(2):134–138
Acknowledgments
This work is supported by the National Basic Research Program of China under Grant No. 2012CB72310402; the National Natural Science Foundation of China under Grant No. 51304126; the research fund for excellent young and middle-aged scientists of Shandong Province under Grant No. BS2013NJ007; Fok Ying Tung Education Foundation under Grant No. 141046; State Key Laboratory of open funds under Grant No. SKLGDUEK1520; Shandong University of Science and Technology Graduate Innovation Fund No. YC150309; the Tai’shan Scholar Engineering Constructin Fund of Shandong Province of China.
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Wang, X., Wen, Zj. & Jiang, Yj. Time–Space Effect of Stress Field and Damage Evolution Law of Compressed Coal-Rock. Geotech Geol Eng 34, 1933–1940 (2016). https://doi.org/10.1007/s10706-016-0074-y
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DOI: https://doi.org/10.1007/s10706-016-0074-y