Study on Dynamic Response and Blasting Vibration Monitoring of Small-Distance Tunnels

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Abstract:

In accordance with characteristics of super-small-distance tunnels in Nanjing metro, the peak value distribution of vibration velocity for existing tunnel was investigated when cut-hole blasted under the conditions of different surrounding rock Grades, followed by dynamic response rule of super-small-distance tunnels blasting. In addition, monitoring emphasis should be placed on upper bench for right tunnel blasting. Therefore, controlled measures of the small-distance tunnels were obtained during construction. Not only is the result fit for the metro tunnel, but it can be as reference for similar engineering.

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2301-2306

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September 2011

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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DOI: 10.1016/s0267-7261(03)00018-6

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