王贤武,饶宇,刘美山,张伟,高峰,刘志芳,王凯

• 1:青海物产爆破技术服务有限公司
• 2:武汉理工大学土木工程与建筑学院
• 3:长江科学院水利部岩土力学与工程重点实验室
• 4:中石化石油工程地球物理有限公司胜利分公司

摘要(Abstract)：

地震勘探的振动特性分析是工程安全研究的基础。针对黄河三角洲凹陷区地震勘探震源类型、药柱埋深和药量的不同,采用现场获得地震勘探振动衰减规律和频率分布特征。研究表明:勘探炸药埋深越浅,震源近区地表的振动越大,振动速度衰减更快,振动影响范围更小;一般地,竖向的振动速度为径向的2～5倍,切向的5～10倍;随药量增大和埋深的增加,萨道夫斯基公式的α和K值均有所减小;机械震源振动特性则受到基础硬化程度影响。爆破振动主频率的分布在三个方向差异性明显,径向主振频率10 Hz以下占比82%,切向表现为"两头分布多(>50 Hz和<20 Hz)、中间(20～50 Hz)分布少"的特点,竖向的高频部分(>30 Hz)占比达到68%;机械震源的主频率在三个方向分布基本一致。

关键词(KeyWords)： 地震勘探;振动衰减;频率分布;机械震源

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年科学基金项目(51609017)

作者(Author): 王贤武,饶宇,刘美山,张伟,高峰,刘志芳,王凯

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