关键词: 露天采矿, 爆破振动, 加速度振级, 无量纲系数, 减振

Abstract: The evaluation and control of blasting vibration has always been the key issue concerned by the mine. Com? bined with a specific blasting excavation project in a mine，through the investigation on the residential buildings near the min? ing area，the control technical schemes of single row or double row damping holes are formulated，and the vibration velocity and acceleration vibration level is comprehensively evaluated by means of field monitoring test and numerical simulation；The dimensionless coefficient is introduced to analyze the influence characteristics of damping hole forms on blasting vibration. The results show that the maximum reduction rate of peak velocity and acceleration vibration level for single-row holes reached 49.8% and 20% respectively，compared with that without damping holes. However，the related maximum reduction rates for double damping holes reached 71.4% and 60% respectively，with significant damping effect. Through the quantitative descrip? tion of non-dimensional influence coefficient，it is obtained that the depth and diameter of damping holes have great influence on the damping effect.

Key words: Open-pit mining, Blasting vibration, Acceleration level, Non-dimensional coefficient, Reduction vibration