Study on Effect of Blasting Vibration on Surface of Particles in Urban Hard Rock Tunnel

Yong Ming Han; Yi Zhou; Hai Liang Wang

doi:10.4028/www.scientific.net/AMM.744-746.982

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 744-746Study on Effect of Blasting Vibration on Surface...

Study on Effect of Blasting Vibration on Surface of Particles in Urban Hard Rock Tunnel

Abstract:

Put the first Phase Project of Qingdao Metro (line 3) civil 03 bid section TAI-YAN interval of blasting construction as the background In this paper,select the test section to blasting test,in groundposition on the ais of the tunnel workface arrange the measuring points and location of measuring points remain the same.Based on the measured data, studied on the law of blasting vibration of cutting parts of each of the driving cycle.The research result show that the cutting part of vibration velocity peak appeared in behind the tunnel woekface 1~3m;Rear vibration composite speed of the tunnel workface is speed of the tunnel workface is 1.0~1.4 times in front of the particle vibration composite speed;The main vibration frequency in front of tunnel workface and rear particles are above 15HZ.

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Periodical:

Applied Mechanics and Materials (Volumes 744-746)

Pages:

982-987

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.744-746.982

Citation:

Cite this paper

Online since:

March 2015

Authors:

Yong Ming Han, Yi Zhou*, Hai Liang Wang

Keywords:

Blasting, Main Vibration Frequency, Qingdao Metro, Vibration Composite Speed

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* - Corresponding Author

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