Blast-Induced Cumulative Effects in Surrounding Rock of Largespan Tunnel under Multiple Blasts

Li Feng Li; Xi Bing Li; Hai Peng Ma; Jiang Feng Xie

doi:10.4028/www.scientific.net/AMR.378-379.498

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 378-379Blast-Induced Cumulative Effects in Surrounding...

Blast-Induced Cumulative Effects in Surrounding Rock of Largespan Tunnel under Multiple Blasts

Abstract:

The blasting vibration derived from multiple blasts and its effects on surrounding rock in a longspan tunnel will probably give rise to cumulative damage of surrounding rock, and weaken surrounding rock’s stability. Blastmate III, made by the Canadian company Instantel, is utilized to monitor the vibration signals from multiple blasts. Blasting vibration decay law and allowed safety distance of blasting are calculated by using Sadaovsk formula. Then, cumulative effects are analyzed by Hilbert-Huang Transform method as well as consequential instantaneous energy spectrum, and UTEP is presented to indicate the change of cumulative effects and damage in surrouding rock. The research shows that during the progress of damage evolution, “strengthening” and” deteriorating” may alternately appear several times. This is a zigzag reciprocating process in damage evolution of surrounding rock.

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Periodical:

Advanced Materials Research (Volumes 378-379)

Pages:

498-501

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.378-379.498

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Online since:

October 2011

Authors:

Li Feng Li, Xi Bing Li, Hai Peng Ma, Jiang Feng Xie

Keywords:

Blast Vibration, Cumulative Effects, Longspan Tunnel, Multiple Blasts, Surrounding Rock

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References

[1] Grady DE, Kipp ME: International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts Vol.2(1980), pp.147-157.

DOI: 10.1016/0148-9062(80)91361-3

Google Scholar

[2] Grady DE, Kipp ME: "Dynamic rock fragmentation", Proc.: Fracture Mechanics of Rock. London: Academic Press, 1987, pp.429-475.

DOI: 10.1016/b978-0-12-066266-1.50015-6

Google Scholar

[3] Kuszmaul JS: "A new constitutive model for fragmentation of rock under dynamic loading", Proc.: Proceedings of the 2nd International Symposium on Rock Fragmentation by Blasting. Columbia, 1987, pp.412-423.

Google Scholar

[4] Liu Q, Katsabanis PD: International Journal of Rock Mechanics and Mining Sciences and Geomechanics Vol.2(1997), pp.217-231.

Google Scholar

[5] Yang R, Bawden WF, Katsabanis PD:International Journal of Rock Mechanics and Mining Sciences and Geomechanics Vol.3(1996), pp.245-254.

DOI: 10.1016/0148-9062(95)00064-x

Google Scholar

[6] X.L. Yang, X.Y. Yuan, Z. Wu and C.D. Su: Chinese Journal of Rock Mechanics and Egineering Vol.4(2001),pp.436-439. (In Chinese)

Google Scholar

[7] Norden E.Huang,Zheng Shen,Steven R.Long, Proc.: Proceedings of the Royal Society of London, London: The Royal Society,1998, pp.903-995.

Google Scholar