Influences of blasting vibration on the sidewall of underground tunnel

Zhu Jun; Yang Jian-hua; Lu Wen-bo; Chen Ming; Yan Peng

doi:10.11883/1001-1455(2014)02-0153-08

Volume 34 Issue 2

May 2014

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Zhu Jun, Yang Jian-hua, Lu Wen-bo, Chen Ming, Yan Peng. Influences of blasting vibration on the sidewall of underground tunnel[J]. Explosion And Shock Waves, 2014, 34(2): 153-160. doi: 10.11883/1001-1455(2014)02-0153-08

Citation:

Zhu Jun, Yang Jian-hua, Lu Wen-bo, Chen Ming, Yan Peng. Influences of blasting vibration on the sidewall of underground tunnel[J]. Explosion And Shock Waves, 2014, 34(2): 153-160. doi: 10.11883/1001-1455(2014)02-0153-08

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Influences of blasting vibration on the sidewall of underground tunnel

doi: 10.11883/1001-1455(2014)02-0153-08

Zhu Jun^{1, 2, 3, 4
,
,},
Yang Jian-hua^{2, 3},
Lu Wen-bo^{2, 3},
Chen Ming^{2, 3},
Yan Peng^{2, 3}

1.
China Harbour Engineering Company Ltd., Beijing100027, China
2.
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, Hubei, China
3.
Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering, School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, Hubei, China
4.
CCCC-FHDI Engineering Co., Ltd., Guangzhou 510230, Guangdong, China

Funds: Supported bythe National Natural Science Foundationof China (51125037); the National Basic Research Program of China (973 Program) (2011CB013501)

More Information

Corresponding author: Zhu Jun, zhujun@whu.edu.cn
Received Date: 2012-07-23
Rev Recd Date: 2013-01-16
Publish Date: 2014-03-25

Abstract

Abstract

Based on the field testing of the blasting vibration on a large-span project of the underground diversion tunnel in Xiluodu, which locates in the southwest of China, with middle geostress, the dynamic responses of the surrounding rock during the blasting excavation were calculated by combining LS-DYNA.The peak particle vibration velocity and the maximum tensile stress were used as the safety criterions to confirm the range of blasting damage, respectively.The calculation results indicates that the peak particle vibration velocity and the maximum tensile stress both appear in the middle of the sidewall in the blasting process, therefore the most dangerous area in the blasting process lies in the middle of the sidewall.The statistical relationship between the peak particle vibrating velocity and the maximum tensile stress in the middle of the sidewall was obtained by the numerical matching method, and the correlation coefficient of the peak particle vibrating velocity and the maximum tensile stress was tested.According to the statistical relationship between the stress and the vibrating velocity, the critical peak particle vibration velocity was put forward for controlling the damage to underground tunnel rock.
- mechanics of explosion,
- critical value of peak particle vibration velocity,
- LS-DYNA,
- sidewall of underground tunnel,
- damage,
- blasting vibration

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References(12)

References

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