Influence of Tunnel Blasting on the Close-Spaced Tunnel

Yan Ming Ding; Shu Cui Cong; Ren Tao Wang; Hao Wei Li; Hai Liang Wang

doi:10.4028/www.scientific.net/AMR.243-249.3628

Paper Titles

Numerical Simulation Analysis on Impact of Surface Deformation to the Frame-Shear Wall Structure Caused by Tunnel Excavation
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Influence Analysis of the Construction of Ground Building to the Underground Shield Tunnel Built Lately
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Study on the Multi-Layered Excavation Scheme of the Large Underground Powerhouse
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Influence of Tunnel Blasting on the Close-Spaced Tunnel
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Research on Repeatability of Karst Water Burst Flood and Stability of Long-Hole Grouting in Long and Large Tunnel
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Mechanical Analysis on Secondary Lining Damaged by Local Load under Earthquake
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A Method for Determining Second Lining Supporting Opportunity in Soft Rock Tunnel
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Numerical Analysis and Optimization of Wedge Box of Diagonal Brace
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 243-249Influence of Tunnel Blasting on the Close-Spaced...

Influence of Tunnel Blasting on the Close-Spaced Tunnel

Abstract:

According to the blasting monitoring of the main tunnel at hidden digging section of Tuandao Second Road exiting ramp in Kiaochow Bay Cross-harbor Tunnel, the paper shows the influence of vibration on the close-spaced main tunnel. Based on the monitoring results of vibration velocity and vibration frequency in the vertical, horizontal radial and tangential direction, we find that the maximum value of vibration velocity in the main tunnel appears in the range of 5-20m in the rear of the ramp corresponding work face. The magnifying effect of the vibration velocity in the rear of the work face is more obvious than the front in the horizontal radial and tangential direction, and the attenuate effect appears in the front in the vertical direction. The attenuate effect of horizontal radial vibration frequency in the main tunnel appears in the rear of ramp work face. The attenuate effect of vertical frequency in the excavated section is more obvious than the unexcavated.

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Periodical:

Advanced Materials Research (Volumes 243-249)

Pages:

3628-3631

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.243-249.3628

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Online since:

May 2011

Authors:

Yan Ming Ding, Shu Cui Cong, Ren Tao Wang, Hao Wei Li, Hai Liang Wang

Keywords:

Attenuate, Blasting, Cross-Harbor Tunnel, Frequency, Magnifying, Velocity

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References

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