Monitoring and Analysis of the Explosion Vibration of Underground Tunnel Construction in Urban Area

摘要

This paper discusses the monitoring work of the blasting vibration of the Qingdao side connection project which belongs to the Kiaochow Bay undersea tunnel. The propagation disciplines of the particle vibration velocity of the ground along the vertical line of the tunnel center are drawn. In the way discussed in this article, the particle vibration velocity of the ground is less than 2 cm·s-1 in the range of 25 m to the surface blasting center and the speed meets the provision for brick concrete buildings in Safety Regulations for Blasting GB6722 (2003), but out the range of 25 m to the surface blasting center, it would be needed to change the blasting parameters to keep safety. The K and α (coefficients in Sodev's formula) of this area is calculated by linear regression.