关键词: 安全距离, 烈度, 分段延时爆破, 减震孔, 最小抵抗线

Abstract: Harmful effect produced by blasting had influencd the normal life of villager in a certain range with the deep development of Xishimen iron ore. V_amx、r 、s Value was calculated, intensityⅠconfirmed, risk level evaluated according to the site situation of Xishimen iron ore blasting and a series of technical measures was adopted to reduce influence.

Key words: Safety distance, Intensity, Stage delayed blasting, Damping hole, Line of least resistance