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Zonal disintegration mechanism of isotropic rock masses around a deep spherical tunnel

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Abstract

In order to investigate zonal disintegration mechanism of isotropic rock masses around a deep spherical tunnel, a new mechanical model subjected to dynamic unloading under hydrostatic pressure condition is proposed. The total elastic stress-field distributions is determined using the elastodynamic equation. The effects of unloading rate and dynamic mechanical parameters of isotropic deep rock masses on the zonal disintegration phenomenon of the surrounding rock masses around a deep spherical tunnel as well as the total elastic stress field distributions are considered. The number and size of fractured and non-fractured zones are determined by using the Hoek-Brown criterion. Numerical computation is carried out. It is found from numerical results that the number of fractured zones increases with increasing the disturbance coefficient, in-situ stress, unloading time and unloading rate, and it decreases with increasing parameter geological strength index, the strength parameter and the uniaxial compressive strength of intact rock.

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References

  1. CLOETE D R, JAGER A J. The nature of the fracture zone in gold mines as revealed by diamond core drilling [J]. Association of Mine Managers, 1980: 1972–1973.

    Google Scholar 

  2. ADMS G R, JAGER A J. Petroscopic observations of rock fracturing ahead of slope faces in deep-level gold mine [J]. Journal of the South African Institute of Mining and Metallurgy, 1980, 80(6): 204–209.

    Google Scholar 

  3. ZHOU X P, HOU Q H, QIAN Q H, ZHANG Y X. The zonal disintegration mechanism of surrounding rock around deep spherical tunnels under hydrostatic pressure condition: A non-euclidean continuum damage model [J]. Acta Mechanica Solida Sinica, 2013, 26(4): 373–387.

    Article  Google Scholar 

  4. CLOETE D R, JAGER A J. The nature of the fracture zone in gold mines as revealed by Diamond core drilling [J]. Association of Mine Managers, 1972.

    Google Scholar 

  5. SHEMYAKIN E, KYRLENYA M V, REVA V N. Effect of zonal disintegration of rocks around underground workings [J]. Doklady Akademii Nauk USSR, 1986, 289(5): 1088–1094.

    Google Scholar 

  6. ZHOU X P, QIAN Q H. The non-Euclidean model of failure of the deep rock masses under the deformation incompatibilty condition [J]. Journal of Mining Science, 2013, 49(3): 368–375.

    Article  Google Scholar 

  7. PENG J, TIAN H Y, CHUN M Z. Discussions on zonal disintegration around tunnel in Deep Rock Mass [J]. Advanced Materials Research, 2012, 594-597: 2285–2289.

    Article  Google Scholar 

  8. ZHOU X P, QIAN Q H, ZHANG B H. Zonal disintegration mechanism of deep crack-weakened rock masses under dynamic unloading [J]. Acta Mechanica Solida Sinica, 2009, 22(3): 240–250.

    Article  Google Scholar 

  9. QIAN Q H, ZHOU X P, XIA E. Effects of the axial in situ tress on the zonal disintegration phenomenon in the surrounding rock masses around a deep circular tunnel [J]. Journal of Mining Science, 2012, 48(2): 276–285.

    Article  Google Scholar 

  10. ZHOU X P, SONG H F, QIAN Q H. Zonal disintegration of deep crack-weakened rock masses: A non-Euclidean model [J]. Theoretical and Applied Fracture Mechanics, 2011, 55(3): 227–236.

    Article  Google Scholar 

  11. QIAN Q H, ZHOU X P, XIA E M. Effects of the axial in situ stresses on the zonal disintegration phenomenon in the surrounding rock masses around a deep circular tunnel [J]. Journal of Mining Science, 2012: 48(2): 276–285.

    Article  Google Scholar 

  12. ZHOU X P, CHEN G, QIAN Q H. Zonal disintegration mechanism of cross-anisotropic rock masses around a deep circular tunnel [J]. Theoretical and Applied Fracture Mechanics, 2012, 57(1): 49–54.

    Article  Google Scholar 

  13. ZHOU X P, BI J, QIAN Q H. Numerical simulation of crack growth and coalescence in rock-like materials containing multiple pre-existing flaws [J]. Rock Mechanics and Rock engineering, 2015, 48(3): 1097–1114.

    Article  Google Scholar 

  14. ZHU Z M, WANG C, KANG J M. Study on the mechanism of zonal disintegration around an excavation [J]. International Journal of Rock Mechanics and Mining Sciences, 2014, 67: 88–95.

    Article  Google Scholar 

  15. QIAN Q H, ZHOU X P. Non-Euclidean continuum model of the zonal disintegration of surrounding rocks around a deep circular tunnel in a non-hydrostatic pressure state [J]. Journal of Mining Science 2011, 47(1): 37–46.

  16. ZHOU X P, CHEN G, QIAN Q H. Zonal disintegration mechanism of cross-anisotropic rock masses around a deep circular tunnel [J]. Theoretical and Applied Fracture Mechanics, 2012, 57(1): 49–54.

    Article  Google Scholar 

  17. SHEMYAKIN E I, KURLENYA M V, OPARIN V N. Zonal disintegration of rocks around underground workings, Part V: practical applications [J]. Journal of Mining Science, 1989, 25(4): 297–302.

    Article  Google Scholar 

  18. QIAN Q H, ZHOU X P, YANG H Q. Zonal disintegration of surrounding rock mass around the diversion tunnels in Jinping II hydropower station, southwestern China [J]. Theoret Appl Fract Mech, 2009, 51(2): 129–138.

    Article  Google Scholar 

  19. GAO F Q, KANG H P, LIN J. Numerical simulation of zonal disintegration of surrounding rock mass in deep mine roadways [J]. J China Coal Soc, 2010, 35(1): 21–25. (in Chinese).

    Google Scholar 

  20. GUZEV M A, PAROSHIN A A. Non-euclidean model of the zonal disintegration of rocks around an underground working [J]. Journal of Applied Mechanics and Technical Physics, 2001, 42(1): 131–139.

    Article  Google Scholar 

  21. ZHOU X P, SHOU Y D. Excavation-induced zonal disintegration of the surrounding rock around a deep circular tunnel considering unloading effect [J]. International Journal of Rock Mechanics and Mining Sciences, 2013, 64: 246–257.

    Article  Google Scholar 

  22. ZHOU X P, BI J. Zonal disintegration mechanism of cross-anisotropic rock mass around a deep circular tunnel under dynamic unloading [J]. Theoretical and Applied Fracture Mechanics, 2012, 60(1): 15–22.

    Article  Google Scholar 

  23. ZHOU X P. Dynamic damage constitutive relation of mesoscopic heterogenous brittle rock under rotation of principal stress axes [J]. Theoretical and Applied Fracture Mechanics, 2010, 54(2): 110–116.

    Article  Google Scholar 

  24. WANG X, LU G, GUILLOW S R. Stress wave propagation in orthotropic laminated thick-walled spherical shells [J]. International Journal of Solids and Structures, 2002, 39(8): 4027–4037.

    Article  MATH  Google Scholar 

  25. HOEK E, BROWN E T. Empirical strength criterion for rock masses [J]. ASCE Journal of Geotechnical and Geoenvironmental Engineering, 1980, 106(GT9): 1013–1036.

    Google Scholar 

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Authors and Affiliations

  1. School of Civil Engineering, Chongqing University, Chongqing, 400045, China

    Xin-bao Gu  (谷新保), Jing Bi  (毕靖) & Ming Xu  (许明)

  2. Institute of Architecture and Engineering, Sichuan University of Science and Engineering, Zigong, 643000, China

    Xin-bao Gu  (谷新保)

Authors
  1. Xin-bao Gu  (谷新保)
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  2. Jing Bi  (毕靖)
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  3. Ming Xu  (许明)
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Corresponding author

Correspondence to Xin-bao Gu  (谷新保).

Additional information

Foundation item: Projects(51325903, 51279218, 51478065) supported by the National Natural Science Foundation of China; Project(2014CB046903) supported by the National Basic of Research Program China; Projects(cstc2013kjrc-ljrccj0001, cstc2013jcyjys30002, cstc2015jcyjys30001) supported by Chongqing Science and Technology Commission (CSTC), Chongqing, China

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Gu, Xb., Bi, J. & Xu, M. Zonal disintegration mechanism of isotropic rock masses around a deep spherical tunnel. J. Cent. South Univ. 22, 4074–4082 (2015). https://doi.org/10.1007/s11771-015-2952-5

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  • DOI: https://doi.org/10.1007/s11771-015-2952-5

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