中远区微差爆破振动叠加效应影响因素分析Analysis on Influential Factors of Vibration Superposition in Middle and Far Field of Millisecond Blasting
甄育才,朱传云
摘要(Abstract)：
微差爆破中先后起爆的炮孔产生的地震波相互叠加是一种常见现象。从单孔爆破振动特性出发,对中远区微差爆破振动叠加效应的产生及其影响因素进行了分析。微差爆破的振动波形在近区主振相持续时间短,波形窄,叠加效应不明显,各分段爆破的波形基本独立,而中远区振动波形主振相持续时间长,波形拉宽,叠加效应较明显,难以辨别各分段爆破的波形。中远区微差爆破振动叠加效应产生的主要因素是介质的衰减慢。振动叠加强度与爆源结构特性、爆心距和间隔时间有关。
关键词(KeyWords)： 微差爆破;爆破振动;振动叠加
基金项目(Foundation):
作者(Author): 甄育才,朱传云
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