关键词: 露天矿山, 爆破振动, 爆破降振措施, 逐孔爆破, 传爆方向, 空气间隔器

Abstract: In order to reduce the impact of blasting vibration on the construction of residential houses and office buildings around mining area,taking an open-pit mine in Anhui Province as the study example,the technical measures for reduction of the blasting vibration of the mining area are studied.The study results show that the blasting vibration effects during the process of blasting can be reduced to a certain extent by adopting hole-by-hole blasting technique,changing the direction of blasting transmission and placing the air spacer at the bottom of the blasting holes;the blasting vibration velocity can be reduced about 40% through integrated application of the above three methods,which can effectively reduce the harmful effect of blasting vibration effects on surrounding environment of the mining area,besides that,it can also provide reliable reference for the reduction of blasting vibration of the other mines.

Key words: Open-pit mine, Blasting vibration, Reduction measures of blasting vibration, Hole-by-hole blasting, Blasting tranmission direction, Air spacer