Geomechanics and Engineering

  • 제24권3호
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  • Pages.215-226
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  • 2021
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Analysis of the crack propagation rules and regional damage characteristics of rock specimens

  • Li, Yangyang (School of Energy and Mining Engineering, Shandong University of Science and Technology) ;
  • Xu, Yadong (School of Energy and Mining Engineering, Shandong University of Science and Technology) ;
  • Zhang, Shichuan (School of Energy and Mining Engineering, Shandong University of Science and Technology) ;
  • Fan, Jing (Shandong Energy Mining Group Co., Ltd) ;
  • Du, Guobin (Shandong Energy Mining Group Co., Ltd) ;
  • Su, Lu (Shandong Energy Mining Group Co., Ltd) ;
  • Fu, Guangsheng (Shandong Bureau of China Metallurgical Geology Bureau)
  • 투고 : 2020.10.21
  • 심사 : 2021.01.15
  • 발행 : 2021.02.10
⟨ 이전 논문 다음 논문 ⟩

초록

To study the evolution mechanism of cracks in rocks with multiple defects, rock-like samples with multiple defects, such as strip-shaped through-going cracks and cavity groups, are used, and the crack propagation law and changes in AE (acoustic emission) and strain of cavity groups under different inclination angles are studied. According to the test results, an increase in the cavity group inclination angle can facilitate the initial damage degree of the rock and weaken the crack initiation stress; the initial crack initiation direction is approximately 90°, and the extension angle is approximately 75~90° from the strip-shaped through-going cracks; thus, the relationship between crack development and cavity group initiation strengthens. The specific performance is as follows: when the initiation angle is 30°, the cracks between the cavities in the cavity group develop relatively independently along the parallel direction of the external load; when the angle is 75°, the cracks between the cavities in the cavity group can interpenetrate, and slip can occur along the inclination of the cavity group under the action of the shear mechanism rupture. With the increase in the inclination angle of the cavity group, the AE energy fluctuation frequency at the peak stress increases, and the stress drop is obvious. The larger the cavity group inclination angle is, the more obvious the energy accumulation and the more severe the rock damage; when the cavity group angle is 30° or 75°, the peak strain of the local area below the strip-shaped through-going fracture plane is approximately three times that when the cavity group angle is 45° and 60°, indicating that cracks are easily generated in the local area monitored by the strain gauge at this angle, and the further development of the cracks weakens the strength of the rock, thereby increasing the probability of major engineering quality damage. The research results will have important reference value for hazard prevention in underground engineering projects through rock with natural and artificial defects, including tunnels and air-raid shelters.

키워드

과제정보

This research was financially supported by the National Natural Science Foundation of China (Grant No. 51804179; 52004147 and 51974173), Natural Science Foundation of Shandong Province (Grant No. ZR2020QE129), Key Research and Development Plan of Shandong Province (Grant No. 2018GSF120003 and 2019GSF111024) and Shandong Province's Taishan Scholar Talent Team Support Plan for Advantaged & Unique Discipline Areas.

참고문헌

  1. Aalianvari, A. (2017), "Combination of engineering geological data and numerical modeling results to classify the tunnel route based on the groundwater seepage", Geomech. Eng., 13(4), 671-683. https://doi.org/10.12989/gae.2017.13.4.671.
  2. Alitalesh, M., Yazdani, M., Fakhimi, A. and Naeimabadi, M. (2020), "Effect of loading direction on interaction of two pre-existing open and closed flaws in a rock-like brittle material", Undergr. Sp., 5(3), 242-257. https://doi.org/10.1016/j.undsp.2019.04.003.
  3. Bahaaddini, M., Sharrock, G. and Hebblewhite, B.K. (2013), "Numerical direct shear tests to model the shear behaviour of rock joints", Comput. Geotech., 51, 101-115. https://doi.org/10.1016/j.compgeo.2013.02.003.
  4. Dyskin, A.V., Sahouryeh, E. and Jewell, R.J. (2003), "Influence of shape and locations of initial 3-D cracks on their growth in uniaxial compression", Eng. Fract. Mech., 70(15), 2115-2136. https://doi.org/10.1016/S0013-7944(02)00240-0.
  5. Dzik, E.J. and Lajtai, E.Z. (1996), "Primary fracture propagation from circular cavities loaded in compression", Int. J. Fracture, 79(1), 49-64. https://doi.org/10.1007/BF00017712.
  6. Fan, X., Chen, R. and Hang, L. (2018), "Cracking and failure in rock specimen containing combined flaw and hole under uniaxial compression", Adv. Civ. Eng. https://doi.org/10.1155/2018/9818250.
  7. Golewski, G.L. (2019), "A new principles for implementation and operation of foundations for machines: A review of recent advances", Struct. Eng. Mech., 71(3), 317-327. https://doi.org/10.12989/sem.2019.71.3.317.
  8. Golewski, G.L. (2019), "A novel specific requirements for materials used in reinforced concrete composites subjected to dynamic loads", Compos. Struct., 223, 110939. https://doi.org/10.1016/j.compstruct.2019.110939.
  9. Golewski, G.L. and Sadowski, T. (2016), "A study of mode III fracture toughness in young and mature concrete with fly ashadditive", Solid State Phenom., 254, 120-125. https://doi.org/10.4028/www.scientific.net/SSP.254.120.
  10. Gongzalez-Quiros, A. and Fernandez-Alvarez, J.P. (2019), "Conceptualization and finite element groundwater flow modeling of a flooded underground mine reservoir in the Asturian Coal Basin, Spain", J. Hydrol., 578. https://doi.org/10.1016/j.jhydrol.2019.124036.
  11. Haeri, H., Khaloo, A. and Marji, M.F. (2015), "Fracture analyses of different pre-holed concrete specimens under compression", Acta Mech. Sinica, 31(06), 855-870. https://doi.org/10.1007/s10409-015-0436-3.
  12. Haeri, H., Shahriar, K. and Marji, M.F. (2014), "Experimental and numerical study of crack propagation and coalescence in pre-cracked rock-like disks", Int. J. Rock Mech. Min. Sci., 67, 20-28. https://doi.org/10.1016/j.ijrmms.2014.01.008,
  13. Jaime, M.C., Zhou, Y.N. and Lin, J.S. (2015), "Finite element modeling of rock cutting and its fragmentation process", Int. J. Rock Mech. Min. Sci., 80, 137-146. https://doi.org/10.1016/j.ijrmms.2015.09.004.
  14. Jin, J., Cao, P. and Chen, Y. (2017), "Influence of single flaw on the failure process and energy mechanics of rock-like material", Comput. Geotech., 86, 150-162. https://doi.org/10.1016/j.compgeo.2017.01.011.
  15. Kadomtsev, A.G., Damaskinskaya E.E. and Kuksenko V.S. (2011), "Fracture features of granite under various deformation conditions", Phys. Solid State, 53(9), 1876-1881. https://doi.org/10.1134/S1063783411090150.
  16. Kong, X.G., Wang, E.Y. and He, X.Q. (2018), "Cracks evolution and multifractal of acoustic emission energy during coal loading", Geomech. Eng., 14(2), 107-113. https://doi.org/10.12989/gae.2018.14.2.107.
  17. Kulatilake, P.H.S.W., Malama, B. and Wang, J.L. (2001), "Physical and particle flow modeling of jointed rock block behavior under uniaxial loading", Int. J. Rock Mech. Min. Sci., 38(5), 641-657. https://doi.org/10.1016/S1365-1609(01)00025-9.
  18. Lee, H. and Jeon. S. (2010), "An experimental and numerical study of fracture coalescence in pre-cracked specimens under uniaxial compression", Int. J. Solids Struct., 48(6), 979-999. https://doi.org/10.1016/j.ijsolstr.2010.12.001.
  19. Liang, Z.Z., Xing, H. and Wang, S.Y. (2012), "A three-dimensional numerical investigation of the fracture of rock specimens containing a pre-existing surface flaw", Comput. Geotech., 45, 19-33. https://doi.org/10.1016/j.compgeo.2012.04.011.
  20. Lyer, K. and Podladchikov, Y.Y. (2009), "Transformation-induced jointing as a gauge for interfacial slip and rock strength", Earth Planet Sci. Lett., 280(1-4), 159-166. https://doi.org/10.1016/j.epsl.2009.01.028.
  21. Madkour, H. (2012), "Parametric analysis of tunnel behavior in jointed rock", Ain Shams Eng. J., 3(2),79-103. https://doi.org/10.1016/j.asej.2012.01.002.
  22. Mejia Camones, L.A., Vargas Jr, E.d.A., Figueiredo, R.P. and Velloso R.Q. (2013), "Application of the discrete element method for modeling of rock crack propagation and coalescence in the step-path failure mechanism", Eng. Geol., 153, 80-94. https://doi.org/10.1016/j.enggeo.2012.11.013.
  23. Moir, H., Lunn, R.J. and Shipton, Z.K. (2009), "Simulating brittle fault evolution from networks of pre-existing joints within crystalline rock", J. Struct. Geol., 32(11), 1742-1753. https://doi.org/10.1016/j.jsg.2009.08.016.
  24. Mondal, S., Olsen-Kettle, L. and Gross, L. (2019), "Simulating damage evolution and fracture propagation in sandstone containing a preexisting 3-D surface flaw under uniaxial compression", Int. J. Numer. Anal. Met., 43(7), 1448-1466. https://doi.org/10.1002/nag.2908.
  25. Oh, J., Moon, T., Canbulat, I. and Moon, J.S. (2019), "Design of initial support required for excavation of underground cavern and shaft from numerical analysis", Geomech. Eng., 17(6),573-581. https://doi.org/10.12989/gae.2019.17.6.573.
  26. Qian, Q.H. and Zhou, X.P. (2018), "Failure behaviors and rock deformation during excavation of underground cavern group for Jinping I Hydropower Station", Rock Mech. Rock Eng., 51(8), 2639-2651. https://doi.org/10.1007/s00603-018-1518-x.
  27. Shemirani, A.B., Haeri, H. Sarfarazi, V. and Hedayat, A. (2017), "A review paper about experimental investigations on failure behaviour of non-persistent joint", Geomech. Eng., 13(4), 535-570. https://doi.org/10.12989/gae.2017.13.4.535.
  28. Shen, B.T., Siren, T. and Rinne, M. (2015), "Modelling fracture propagation in anisotropic rock mass", Rock Mech. Rock Eng., 48(3), 1067-1081. https://doi.org/10.1007/s00603-014-0621-x.
  29. Vahab, S. and Hadi, H. (2016), "A review of experimental and numerical investigations about crack propagation", Comput. Concrete, 18(2), 235-266. https://doi.org/10.12989/cac.2016.18.2.235.
  30. Waltham, A.C. and Swift, G.M. (2004), "Bearing capacity of rock over mined cavities in Nottingham", Eng. Geol., 75(1), 15-31. https://doi.org/10.1016/j.enggeo.2004.04.006.
  31. Winn, K., Wong, L.N.Y. and Alejano, L.R. (2019), "Multi-approach stability analyses of large caverns excavated in low-angled bedded sedimentary rock masses in Singapore", Eng. Geol., 259. https://doi.org/10.1016/j.enggeo.2019.105164.
  32. Wong, R.H.C., Chau, K.T. and Tang, C.A. (2001), "Analysis of crack coalescence in rock-like materials containing three flaws-Part I: Experimental approach", Int. J. Rock Mech. Min. Sci., 38(7), 909-924. https://doi.org/10.1016/S1365-1609(01)00065-X.
  33. Xu, S.D., Li, Y.H. and Liu, J.P. (2017), "Detection of cracking and damage mechanisms in brittle granites by moment tensor analysis of acoustic emission signals", Acoust. Phys., 63, 359-367. https://doi.org/10.1134/S1063771017030137.
  34. Yang, S.Q. and Huang, Y.H. (2014), "Experiment and particle flow simulation on crack coalescence behavior of sandstone specimens containing double holes and a single fissure", J. Basic Sci. Eng., 22(03), 584-597. https://doi.org/10.3969/j.issn.1005-0930.2014.03.017.
  35. Zeng, W., Yang, S.Q. and Tian, W.L. (2018), "Experimental and numerical investigation of brittle sandstone specimens containing different shapes of holes under uniaxial compression", Eng. Fract. Mech., 200, 430-450. https://doi.org/10.1016/j.engfracmech.2018.08.016.
  36. Zhang, X.S. (2005), "Layout and monitoring-controlling design of underground openings and tunnels for Longtan Hydropower Station", Chin. J. Rock Mech. Eng., 21, 185-191. https://doi.org/10.1007/s11769-005-0030-x.
  37. Zhou, Z.L., Tan, L.H. and Cao, W.Z. (2017), "Fracture evolution and failure behaviour of marble specimens containing rectangular cavities under uniaxial loading", Eng. Fract. Mech., 184, 183-201. https://doi.org/10.1016/j.engfracmech.2017.08.029.