Abstract:Forecasting blasting vibration velocity is always a premise and basis in controlling blasting vibration damage,and therefore,is an important research subject in the field of blasting vibration control.In this paper the method of calculating the particle vibration intensity,an important index reflecting the blasting vibration intensity,was discussed based on the numerical simulation method of finite element,and this was followed by comparing analysis of the two different structures of decked charge with air and that with water.The results indicated that the velocity from the calculation was correspondent with the actual one in the area not far from the blasting center.The finding has instructive significance to the design and construction of blasting operation.