›› 2005, Vol. 26 ›› Issue (6): 964-967.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Monitoring and controlling technology for blasting vibration induced by tunnel excavation

CHEN Qing1, WANG Hong-tu1, 2, HU Guo-zhong1, LI Xiao-hong1, 2, LI Kai-xue1, PANG Cheng1   

  1. 1.Key Lab for Exploitation of China Southwestern Resources ＆ the Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, Chongqing 400044, China； 2. Research Institute of Southwest China Energy and Mineral Resources Development & Safety Technology, Chongqing University, Chongqing 400030, China
  • Received:2005-03-08 Online:2005-06-10 Published:2013-12-17

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Abstract: In this paper, based on project excavation of the Wansongling tunnel, the monitoring way and controlling technology of vibration of blasting earthquake wave induced by tunnel excavation were studied. Via regression analysis for the results of monitoring on blasting vibration, the mathematical model of spread of blasting vibration induced by tunnel excavation was established; the orderliness of spread of blasting vibration was drawn. Combined the project, the empirical formula after revised of attenuation of blasting earthquake wave was put forward; Through contrasting and analyzing, the particle vibration velocity were forecasted by the orderliness formula of attenuation of blasting earthquake wave is precise relatively. At the same time, combined the excavation blasting construction of this tunnel project, the controlling technology measures of blasting vibration were put forward from the choice of the reasonable blasting time difference, the maximum charge quantity, the millisecond blasting, the excavation plan, springing blasting, so as to control the vibration velocity of ground within safety range in the process of this tunnel excavation construction, consequently the safety of ground buildings of construction segment and blasting work of this tunnel project was insured. This study will play an important role in guiding the excavation blasting construction of the tunnel project and assuring the safety of ground buildings.

Key words: tunnel excavation, blasting vibration, attenuation orderliness, controlling technology

CLC Number: 

  • TU 457
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  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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