Geomechanics and Engineering

  • 제16권1호
  • /
  • Pages.85-95
  • /
  • 2018
  • /
  • 2005-307X(pISSN)
  • /
  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Influence of water content on dynamic mechanical properties of coal

  • Gu, Helong (School of Resources and Safety Engineering, Central South University) ;
  • Tao, Ming (School of Resources and Safety Engineering, Central South University) ;
  • Wang, Jingxiao (School of Resources and Safety Engineering, Central South University) ;
  • Jiang, Haibo (School of Resources and Safety Engineering, Central South University) ;
  • Li, Qiyue (School of Resources and Safety Engineering, Central South University) ;
  • Wang, Wen (School of Energy Science and Engineering, Henan Polytechnic University)
  • 투고 : 2017.12.05
  • 심사 : 2018.03.29
  • 발행 : 2018.09.20
⟨ 이전 논문 다음 논문 ⟩

초록

Water affects the mechanical properties of coal and stress wave propagation. To comprehensively investigate the effect of water content on the properties of coal, laboratory tests including X-Ray Diffraction (XRD) analysis, P-wave test, S-wave test, static and dynamic compression test with different water contents were conducted. The compressive strength, elastic modulus and failure strain and their mechanism of coal specimen under coupled static-dynamic load with the increased water content were observed. Meanwhile, energy transmission and dissipation characteristics of a stress wave in coal specimens with different water contents under dynamic load and its relation with the failure features, such as fragmentation and fractal dimension, of coal was analyzed. Furthermore, the dynamic interpretation of water infusion to prevent coal burst based on water infusion model of coal seam roadway was provided.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

참고문헌

  1. Cheng, J., Wan, Z., Zhang, Y., Li, W., Peng, S.S. and Zhang, P. (2015), "Experimental study on anisotropic strength and deformation behavior of a coal measure shale under room dried and water saturated conditions", Shock Vib., 1-13.
  2. Cheng, W. M., Nie, W., Zhou, G., Yu, Y., Ma, Y. and Xue, J. (2012), "Research and practice on fluctuation water infusion technology at low permeability coal seam", Safety Sci., 50(4), 851-856. https://doi.org/10.1016/j.ssci.2011.08.021
  3. Du, K., Tao, M., Li, X.B. and Zhou, J. (2016), "Experimental study of slabbing and rockburst induced by true-triaxial unloading and local dynamic disturbance", Rock Mech. Rock Eng., 49(9), 1-17. https://doi.org/10.1007/s00603-015-0901-0
  4. Fei, H.L. and Hong, C.C. (2017), "Study on crushed and fracture zone range under combined action of stress and detonation gas", Blasting, 34(1), 33-36 (in Chinese).
  5. Gaziev, E. (2001), "Rupture energy evaluation for brittle materials", J. Solid. Struct., 38(42), 7681-7690. https://doi.org/10.1016/S0020-7683(01)00037-3
  6. Hong, L., Zhou, Z.L., Yin, T.B., Liao, G.Y. and Ye, Z.Y. (2009), "Energy consumption in rock fragmentation at intermediate strain rate", J. Central South Univ. Technol., 16(4), 677-682. https://doi.org/10.1007/s11771-009-0112-5
  7. ISRM. (1978), "Suggested methods for determining tensile strength of rock materials", J. Rock Mech. Min. Sci. Geomech. Abstr., 15(15), 99-103. https://doi.org/10.1016/0148-9062(78)90003-7
  8. Li, M., Mao, X., Lu, A., Tao, J., Zhang, G., Zhang, L. and Li, C. (2014), "Effect of specimen size on energy dissipation characteristics of red sandstone under high strain rate", J. Min. Sci. Technol., 24(2), 151-156. https://doi.org/10.1016/j.ijmst.2014.01.002
  9. Li, X, and Gu, D. (1994), Rock Impact Dynamics, Central South University of Technology Press, Changsha, China.
  10. Li, X., Tao, M., Wu, C., Du, K. and Wu, Q. (2017), "Spalling strength of rock under different static pre-confining pressures", J. Impact Eng., 99, 69-74. https://doi.org/10.1016/j.ijimpeng.2016.10.001
  11. Li, X., Zhou, Z., Lok, T. S., Hong, L. and Yin, T. (2008), "Innovative testing technique of rock subjected to coupled static and dynamic loads", J. Rock Mech. Min. Sci., 45(5), 739-748. https://doi.org/10.1016/j.ijrmms.2007.08.013
  12. Li, X., Zou, Y. and Zhou, Z. (2014), "Numerical simulation of the rock shpb test with a special shape striker based on the discrete element method", Rock Mech. Rock Eng., 47(5), 1693-1709. https://doi.org/10.1007/s00603-013-0484-6
  13. Liu, J., Xu, J., Lu, X., Zhang, L. and Wang, Z. (2009), "Experimental study on dynamic mechanical properties of amphibolites under impact compressive loading", Chin. J. Rock Mech. Eng., 28(10), 2113-2120.
  14. Liu, X., Dai, F., Zhang, R. and Liu, J. (2015), "Static and dynamic uniaxial compression tests on coal rock considering the bedding directivity", Environ. Earth Sci., 73(10), 5933-5949. https://doi.org/10.1007/s12665-015-4106-3
  15. Lundberg, B. (1976), "A split hopkinson bar study of energy absorption in dynamic rock fragmentation", J. Rock Mech. Min. Sci. Geomech. Abstr., 13(6), 187-197. https://doi.org/10.1016/0148-9062(76)91285-7
  16. Luo, X.L., Mo, J.Y., Chi, E.A. and Li, Y.N. (2017), "Experimental study and optimization of blasting parameters of high water cut rock", Blasting, 34(4), 85-90 (in Chinese).
  17. Ogata, Y., Jung, W., Kubota, S. and Wada, Y. (2004), "Effect of the strain rate and water saturation for the dynamic tensile strength of rocks", Mater. Sci. Forum, 465-466, 361-366. https://doi.org/10.4028/www.scientific.net/MSF.465-466.361
  18. Ouyang, Q., Wu, C. and Huang, L. (2018), "Methodologies, principles and prospects of applying big data in safety science research", Safety Sci., 101, 60-71. https://doi.org/10.1016/j.ssci.2017.08.012
  19. Peng, R., Ju, Y., Wang, J.G., Xie, H., Gao, F. and Mao, L. (2015), "Energy dissipation and release during coal failure under conventional triaxial compression", Rock Mech. Rock Eng., 48(2), 509-526. https://doi.org/10.1007/s00603-014-0602-0
  20. Shen, J., Jimenez, R., Karakus, M. and Xu, C. (2014), "A simplified failure criterion for intact rocks based on rock type and uniaxial compressive strength", Rock Mech. Rock Eng., 47(2), 357-369. https://doi.org/10.1007/s00603-013-0408-5
  21. Shen, J., Karakus, M. and Xu, C. (2012), "A comparative study for empirical equations in estimating deformation modulus of rock masses", Tunn. Undergr. Sp. Technol., 32(11), 245-250. https://doi.org/10.1016/j.tust.2012.07.004
  22. Tao, M., Ma, A., Cao, W., Li, X. and Gong, F. (2017b), "Dynamic response of pre-stressed rock with a circular cavity subject to transient loading", J. Rock Mech. Min. Sci., 99, 1-8. https://doi.org/10.1016/j.ijrmms.2017.09.003
  23. Tao, M., Zhao, H., Li, X., Ma, J., Du, K. and Xie, X. (2017a), "Determination of spalling strength of rock by incident waveform", Geomech. Eng., 12(1), 1-8. https://doi.org/10.12989/gae.2017.12.1.001
  24. Turcotte, D.L. (2002), "Fractals in petrology", Lithos, 65(3-4), 261-271. https://doi.org/10.1016/S0024-4937(02)00194-9
  25. Whittles, D.N., Kingman, S., Lowndes, I. and Jackson, K. (2006), "Laboratory and numerical investigation into the characteristics of rock fragmentation", Mineral. Eng., 19(14), 1418-1429. https://doi.org/10.1016/j.mineng.2006.02.004
  26. Xie, G., Yin, Z., Wang, L., Hu, Z. and Zhu, C. (2017), "Effects of gas pressure on the failure characteristics of coal", Rock Mech. Rock Eng., 50(1), 1-13. https://doi.org/10.1007/s00603-016-1095-9
  27. Xie, H., Gao, F. and Zhou, H. (2003), "Fractal fracture and fragmentation in rocks", J. Seismol., 23(4), 1-9.
  28. Yao, Q., Li, X., Zhou, J., Ju, M., Chong, Z. and Zhao, B. (2015), "Experimental study of strength characteristics of coal specimens after water intrusion", Arab. J. Geosci., 8(9), 6779-6789. https://doi.org/10.1007/s12517-014-1764-5
  29. Zhang, Z.X., Kou, S.Q., Jiang, L.G. and Lindqvist, P.A. (2000), "Effects of loading rate on rock fracture: Fracture characteristics and energy partitioning", J. Rock Mech. Min. Sci., 37(5), 745-762. https://doi.org/10.1016/S1365-1609(00)00008-3
  30. Zhao, Y., Liu, S., Jiang, Y., Wang, K. and Huang, Y. (2016), "Dynamic tensile strength of coal under dry and saturated conditions", Rock Mech. Rock Eng., 49(5), 1709-1720. https://doi.org/10.1007/s00603-015-0849-0
  31. Zheng, Z., Khodaverdian, M. and Mclennan, J.D. (1991), "Static and dynamic testing of coal specimens", Proceedings of the 1991 SCA Conference, San Antonio, Texas, U.S.A.
  32. Zhou, Y.X., Xia, K.W., Li, X.B., Li, H.B., Ma, G.W., Zhao, J., Zhou, Z.L. and Dai, F. (2011), "Suggested methods for determining the dynamic strength parameters and mode-i fracture toughness of rock materials", J. Rock Mech. Min. Sci., 49(1), 105-112.
  33. Zhou, Z., Cai, X., Cao, W., Li, X. and Xiong, C. (2016), "Influence of water content on mechanical properties of rock in both saturation and drying processes", Rock Mech. Rock Eng., 49(8), 3009-3025. https://doi.org/10.1007/s00603-016-0987-z
  34. Zhou, Z., Li, X., Liu, A. and Zou, Y. (2011), "Stress uniformity of split hopkinson pressure bar under half-sine wave loads", J. Rock Mech. Min. Sci., 48(4), 697-701. https://doi.org/10.1016/j.ijrmms.2010.09.006

피인용 문헌

  1. Strength degradation of a natural thin-bedded rock mass subjected to water immersion and its impact on tunnel stability vol.21, pp.1, 2020, https://doi.org/10.12989/gae.2020.21.1.063
  2. Effects of water saturation time on energy dissipation and burst propensity of coal specimens vol.24, pp.3, 2018, https://doi.org/10.12989/gae.2021.24.3.205