Cumulative Damage Monitoring of Shotcrete in Large-Span Tunnel under Multiple-Blastings

Fang Ping Zhong; Li Feng Li; Feng Qiang Gong

doi:10.4028/www.scientific.net/AMM.405-408.1235

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 405-408Cumulative Damage Monitoring of Shotcrete in...

Cumulative Damage Monitoring of Shotcrete in Large-Span Tunnel under Multiple-Blastings

Abstract:

In case of poor surrounding rock conditions, multiple-section blasting method is usually used in large-span tunnel. The sprayed concrete in tunnel will receive multiple blasting effects from different blasting section. Hence, its valuable to research the safety of sprayed concrete lining. Based on the field observation data and construction condition in Shizilong tunnel, The relation between initial velocity and crack length of different concrete age is obtained through indoor tests and the velocity is calculated when the length is 2mm. Then, with the mechanics theories of fracture and damage, the cumulative damage of rock and concrete is studied microcosmically and the increment expression is mended at the same time. The accuracy is verified based on a large number of data in the end, which is helpful for construction of large-span tunnels in future.

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Periodical:

Applied Mechanics and Materials (Volumes 405-408)

Pages:

1235-1238

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.405-408.1235

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Online since:

September 2013

Authors:

Fang Ping Zhong, Li Feng Li, Feng Qiang Gong

Keywords:

Cumulative Damage Monitoring, Large-Span Tunne, Multiple-Blastings, Shotcrete

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References

[1] Q.B. Zhang, C.S. Wu, Y.S. Zhou: Mining Technology Vol. 5 (2009), p.73.

Google Scholar

[2] H.X. Wu, X.K. Niu: Engineering Blasting Vol. 11 (2005), p.32.

Google Scholar

[3] F. Li, W.Z. Chen, S.C. Li: Chinese Journal of Rock Mechanics and Engineering Vol. 23 (2004), p.4744.

Google Scholar

[4] D.Y. Jiang, Y.B. Hou, S. Ren, F.S. Li, Y. Chen: China Safety Science Journal Vol. 18 (2008), p.99.

Google Scholar

[5] D.H. Zhou, L.Q. Cao, Y.F. Ma, S.T. Fang, K. Wang: Chinese Journal of Rock Mechanics and Engineering Vol. 29 (2010), p.140.

Google Scholar

[6] D.N. Li: Research on Size Effect of Empty Hole in Horizontal Roadway Cut Blasting & Accumulating Characteristic of Surrounding Rock Damage Caused by Frequently Blasting Vibration (Central south university , China 2006).

Google Scholar

[7] The national development and reform commission of the People's Republic of China: Construction Technical Specifications on Rock-Foundation Excavating Engineering of Hydraulic Structures (China electric power press , China 2007).

Google Scholar