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Comparison of seismic effects during deep tunnel excavation with different methods

  • Liangtao Xie
  • Peng Yan
  • Wenbo Lu
  • Ming Chen
  • Gaohui Wang
Technical Paper

Abstract

The rapid release of strain energy is an important phenomenon leading to seismic events or rock failures during the excavation of deep rock. Through theoretical analysis of strain energy adjustment during blasting and mechanical excavation, and the interpretation of measured seismicity in the Jin-Ping II Hydropower Station in China, this paper describes the characteristics of energy partition and induced seismicity corresponding to different energy release rates. The theoretical analysis indicates that part of the strain energy will be drastically released accompanied by violent crushing and fragmentation of rock under blast load, and this process will result in seismic events in addition to blasting vibration. The intensity of the seismicity induced by transient strain energy release highly depends on the unloading rate of in-situ stress. For mechanical excavation, the strain energy, which is mainly dissipated in the deformation of surrounding rock, releases smoothly, and almost no seismic events are produced in this gradual process. Field test reveals that the seismic energy transformed from the rock strain energy under high stress condition is roughly equal to that coming from explosive energy, and the two kinds of vibrations superimpose together to form the total blasting excavation-induced seismicity. In addition, the most intense seismicity is induced by the cut blasting delay; this delay contributes 50% of the total seismic energy released in a blast event. For mechanical excavation, the seismic energy of induced vibration (mainly the low intensity acoustic emission events or mechanical loading impacts), which accounts only for 1.5‰ of that caused by in-situ stress transient releasing, can be ignored in assessing the dynamic response of surrounding rock.

Keywords

seismicity energy release rate blasting excavation mechanical excavation seismic energy 

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References

  1. Abuov MG, Aitaliev SM, Ermekov TM, Zhanbyrbaev NB and Kayupov MA (1988), “Studies of the Effect of Dynamic Processes during Explosive Break-Out upon the Roof of Mining Excavations,” Journal of Mining Science, 24(6): 581–590.Google Scholar
  2. Achenbach JD (1973), Wave Propagation in Elastic Solids, Amsterdam: Elsevier.Google Scholar
  3. Barton NR (2000), TBM Tunneling in Jointed and Faulted Rock, Rotterdam: CRC Press.Google Scholar
  4. Cai M, Kaiser PK and Martin CD (2001), “Qua ntification of Rock Mass Damage in Underground Excavations from Microseismic Event Monitoring,” International Journal of Rock Mechanics and Mining Sciences, 38(8): 1135–1145.CrossRefGoogle Scholar
  5. Cheng JS, Yu DJ and Yang Y (2005), “Time–Energy Density Analysis Based on Wavelet Transform,” Ndt & E International, 38(7): 569–572.CrossRefGoogle Scholar
  6. Cheng W, Wang W, Huang S and Ma P (2013), “Acoustic Emission Monitoring of Rockbursts during TBMExcavated Headrace Tunneling at Jinping II Hydropower Station,” Journal of Rock Mechanics and Geotechnical Engineering, 5(6): 486–494.CrossRefGoogle Scholar
  7. Cook MA, Cook UD, Clay RB, Keyes RT and Udy LL (1966), “Behavior of Rock during Blasting,” Transaction of Social Mining Engineering, 23(1): 17–25.Google Scholar
  8. Cook NGW (1976), “Seismicity Associated with Mining,” Engineering Geology, 10(2-4): 99–122.CrossRefGoogle Scholar
  9. Daubechies I (1988), “Orthonormal Bases of Compactly Supported Wavelets,” Communications on Pure and Applied Mathematics, 41(7): 909–996.CrossRefGoogle Scholar
  10. Gibowicz SJ and Kijko A (1994), An Introduction to Mining Seismology, New York: Academic Press.Google Scholar
  11. Gong QM and Zhao J (2009), “Development of a Rock Mass Characteristics Model for TBM Penetration Rate Prediction,” International Journal of Rock Mechanics and Mining Sciences, 46(1): 8–18.CrossRefGoogle Scholar
  12. Gong QM, Yin LJ, Wu SY, Zhao J and Ting Y (2012), “Rock Burst and Slabbing Failure and Its Influence on TBM Excavation at Headrace Tunnels in Jinping II Hydropower Station,” Engineering Geology, 124: 98–108.CrossRefGoogle Scholar
  13. Henrych J (1979), The Dynamics of Explosion and Its Use, New York: Elsevier.Google Scholar
  14. Hinzen KG (1998), “Comparison of Seismic and Explosive Energy in Five Smooth Blasting Test Rounds,” International Journal of Rock Mechanics and Mining Sciences, 35(7): 957–967.CrossRefGoogle Scholar
  15. Hua AZ (2003), “Energy Analysis of Surrounding Rocks in Underground Engineering,” Chinese Journal of Rock Mechanics and Engineering, 22(17): 1054–1059. (in Chinese)Google Scholar
  16. Hussain MA, Pu SL and Underwood J (1974), “Strain Energy Release Rate for a Crack under Combined Mode I and Mode II,” Proceedings of the 1973 National Symposium on Fracture Mechanics, Part II, ASTM International, 1–21.Google Scholar
  17. Innaurato N, Oggeri C, Oreste PP and Vinai R (2007), “Experimental and Numerical Studies on Rock Breaking with TBM Tools under High Stress Confinement,” Rock Mechanics and Rock Engineering, 40(5): 429–451.CrossRefGoogle Scholar
  18. Iyama J and Kuwamura H (1999), “Application of Wavelets to Analysis and Simulation of Earthquake Motions,” Earthquake Engineering & Structural Dynamics, 28(3): 255–272.CrossRefGoogle Scholar
  19. Jia P, Yang TH and Yu QL (2012), “Mechanism of Parallel Fractures around Deep Underground Excavations,” Theoretical and Applied Fracture Mechanics, 61: 57–65.CrossRefGoogle Scholar
  20. Kaiser PK and Tang CA (1998), “Numerical Simulation of Damage Accumulation and Seismic Energy Release during Brittle Rock Failure–Part II: Rib Pillar Collapse,” International Journal of Rock Mechanics and Mining Sciences, 35(2): 123–134.CrossRefGoogle Scholar
  21. Kisslinger C (1976), “A Review of Theories of Mechanisms of Induced Seismicity,” Engineering Geology, 10(2): 85–98.CrossRefGoogle Scholar
  22. Kontogianni VA and Stiros SC (2005), “Induced Deformation during Tunnel Excavation: Evidence from Geodetic Monitoring,” Engineering Geology, 79(1): 115–126.CrossRefGoogle Scholar
  23. Lak M, Baghbanan A and Hashemolhoseini H (2017), “Effect of Seismic Waves on the Hydro-Mechanical Properties of Fractured Rock Masses,” Earthquake Engineering and Engineering Vibration, 16(3): 525–536.CrossRefGoogle Scholar
  24. Li LP, Li SC, Zhang QS, Li LY and Liu HQ (2008), “Analysis of Dynamic Response on Blasting Excavation of Close-spaced Tunnel,” Journal of Highway and Transportation Research and Development, 25(7): 100–106. (in Chinese)Google Scholar
  25. Li T, Cai MF and Cai M (2007), “A Review of Mining-Induced Seismicity in China,” International Journal of Rock Mechanics and Mining Sciences, 44(8): 1149–1171.CrossRefGoogle Scholar
  26. Ling TH and Li XB (2004), “Time-Energy Analysis Based on Wavelet Transform for Identifying Real Delay Time in Millisecond Blasting,” Chinese Journal of Rock Mechanics and Engineering, 23(13): 2260–2270. (in Chinese)Google Scholar
  27. Linkov AM (1996), “Rockburst and the Instability of Rock Masses,” International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 33: 727–732.CrossRefGoogle Scholar
  28. Lu WB, Li P, Chen M, Zhou CB and Shu DQ (2011a), “Comparison of Vibrations Induced by Excavation of Deep-buried Cavern and Open Pit with Method of Bench Blasting,” Journal of Central South University of Technology, 18(5): 1709–1718.CrossRefGoogle Scholar
  29. Lu WB, Yang JH, Chen M and Zhou CB (2011b), “An Equivalent Method for Blasting Vibration Simulation,” Simulation Modelling Practice and Theory, 19(9): 2050–2062.CrossRefGoogle Scholar
  30. Mortazavi A and Katsabanis PD (2001), “Modelling Burden Size and Strata Dip Effects on the Surface Blasting Process,” International Journal of Rock Mechanics and Mining Sciences, 38(4): 481–498.CrossRefGoogle Scholar
  31. Sanchidrian JA, Segarra P and Lopez LM (2007), “Energy Components in Rock Blasting,” International Journal of Rock Mechanics and Mining Sciences, 44(1): 130–147.CrossRefGoogle Scholar
  32. Shan ZG and Yan P (2010), “Management of Rock Bursts during Excavation of the Deep Tunnels in Jinping II Hydropower Station,” Bulletin of Engineering Geology and the Environment, 69(3): 353–363.CrossRefGoogle Scholar
  33. Stiros SC and Kontogianni VA (2009), “Coulomb Stress Changes: from Earthquakes to Underground Excavation Failures,” International Journal of Rock Mechanics and Mining Sciences, 46(1): 182–187.CrossRefGoogle Scholar
  34. Tarkoy PJ (1995), “Comparing TBMs with Drill+Blast Excavation,” Tunnels & Tunnelling International, 27(10): 41–44.Google Scholar
  35. Vetr M G, Nouri A R and Kalantari A (2016), “Seismic Evaluation of Rocking Structures Through Performance Assessment and Fragility Analysis,” Earthquake Engineering and Engineering Vibration, 15(1): 115–127.CrossRefGoogle Scholar
  36. Wang JA and Park HD (2001), “Comprehensive Prediction of Rockburst Based on Analysis of Strain Energy in Rocks,” Tunnelling and Underground Space Technology, 16(1): 49–57.CrossRefGoogle Scholar
  37. Wang ZS and Wang MS (2002), “Safe Driving Technology for TBM Crossing Unfavorable Geologic Zones,” Chinese Journal of Safety Science, 12(4): 55–59. (in Chinese)Google Scholar
  38. Wang L, Lu Z and Gao Q (2012), “A Numerical Study of Rock Burst Development and Strain Energy Release,” International Journal of Mining Science and Technology, 22(5): 675–680.CrossRefGoogle Scholar
  39. Wei W, Wei Y, Wang QZ and Kang X (2016), “Earthquake-Induced Collapse Mechanism of Two Types of Dangerous Rock Masses,” Earthquake Engineering & Engineering Vibration, 15(2): 379–386.CrossRefGoogle Scholar
  40. Whittaker BN, Singh RN and Sun G (1992), Rock Fracture Mechanics: Principles, Design and Applications, Developments in Geotechnical Engineering, Amsterdam: Elsevier.Google Scholar
  41. Yan P, Zhao ZG, Lu WB, Fan Y, Chen XR and Shan ZG (2015), “Mitigation of Rock Burst Events by Blasting Techniques during Deep-Tunnel Excavation,” Engineering Geology, 188: 126–136.CrossRefGoogle Scholar
  42. Yan P, Lu WB, Zhang J, Zou YJ and Chen M (2017), “Evaluation of Human Response to Blasting Vibration from Excavation of a Large Scale Rock Slope: A Case Study,” Earthquake Engineering and Engineering Vibration, 16(2), 435–446.CrossRefGoogle Scholar
  43. Yang JH, Lu WB, Chen M, Yan P and Zhou CB (2013), “Microseism Induced by Transient Release of In-Situ Stress during Deep Rock Mass Excavation by Blasting,” Rock Mechanics and Rock Engineering, 46(4): 859–875.CrossRefGoogle Scholar

Copyright information

© Institute of Engineering Mechanics, China Earthquake Administration and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Liangtao Xie
    • 1
    • 2
  • Peng Yan
    • 1
    • 2
  • Wenbo Lu
    • 1
    • 2
  • Ming Chen
    • 1
    • 2
  • Gaohui Wang
    • 1
    • 2
  1. 1.State Key Laboratory of Water Resources and Hydropower Engineering ScienceWuhan UniversityWuhanChina
  2. 2.Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering Ministry of EducationWuhan UniversityWuhanChina

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