ISSN 2096-4498

   CN 44-1745/U

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Study on Vibrationreducing Effect of Deep and Large Vibrationreducing Hole: Case Study on Control Blasting of a Shallowburied Mined Station of Qingdao Metro

  • LI Kexian ,
  • ZHAO Jizeng ,
  • LEI Gang
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  • (1. Qingdao Subway Group Co., Ltd., Qingdao 266000, Shandong, China; 2. Beijing Urban Engineering Design and Research Institute Co., Ltd., Beijing 100000, China)

Received date: 2015-04-03

  Revised date: 2015-05-07

  Online published: 2015-06-25

Abstract

Drilling and blasting method is often used in the construction of shallowburied Metro stations located in rock strata, and it is inevitable that vibration effect may occur to the surrounding buildings. In this paper, vibrationreducing holes are used in the blasting construction of a shallowburied station of Qingdao Metro, so as to minimize the impact on the surrounding buildings. A series of tests and monitoring have been carried out for the vibrationreducing holes, blasting vibration velocity and vibrationdamping effect. The results show that the influence on the surrounding buildings has been reduced by using vibrationreducing holes, the average vibration velocity attenuation ratio reaches 35.4%, and the safety of the surrounding buildings has been guaranteed.

Cite this article

LI Kexian , ZHAO Jizeng , LEI Gang . Study on Vibrationreducing Effect of Deep and Large Vibrationreducing Hole: Case Study on Control Blasting of a Shallowburied Mined Station of Qingdao Metro[J]. Tunnel Construction, 2015 , 35(6) : 595 -600 . DOI: 10.3973/j.issn.1672-741X.2015.06.017

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