Based on the rock destruction process and the characteristic of stress wave

propagation

an equivalent approach used to acting blasting load was proposed

which could calculate and get the blasting vibration quickly as drill and blast method was used in tunnel excavation.Combined with the excavation of Shuangbei tunnel

the equivalent approach was taken to simulate the ground vibration induced by tunneling blast.The equivalent load acting approach is proven to be an efficient way to calculate the ground blast vibration of shallow-buried tunnel

through comparative analysis of the numerical calculation results and the measured results of the PPVs at surface mass points.Finally

We calculated the ground vibration intensity when the location relationship of the two tunnel’s working face are different and obtained that there is amplification effects of the ground vibration on the un-blasting tunnel and the amplification factor of the ground vibration intensity is determined by the two tunnels working faces.