Abstract：
Based on the construction of lot 3 of the Qingdao Metro Line 3, which passes under a dental hospital, this paper researches the velocity law of ground particle vibration induced by cut blasting in a shallow-buried tunnel. To be specific, it monitors the maximum vibration velocities in the vertical, horizontal radial, and horizontal tangential directions at the first monitoring section from right above the parallel tunnel axis, as well as the maximum velocity in the vertical direction from the vertical tunnel axis. In light of the effects of underground blasting on ground vibration, it is determined that the vibration peak value occurs at a distance of 1~3m from the working face, while a crater-shaped peak and valley value occur near the reference point due to cut blasting, and the synthetic vibration velocity is greater than the velocity in any single direction, but their vibration laws are similar.
SUN Zhi-Guo,
Wang-Xiao-Wen
.On the Velocity Law of Ground Particle Vibration Induced by Cut Blasting in a Shallow-Buried Tunnel[J] MODERN TUNNELLING TECHNOLOGY, 2015,V52(1): 163-167
2015, Vol. 52 