雷涛,程瑞山,叶海旺,冉成,赵亮,强小刚

• 1:武汉理工大学资源与环境工程学院
• 2:矿物资源加工与环境湖北省重点实验室
• 3:中南大学资源与安全工程学院
• 4:大庆石油管理局射孔弹厂西北基地

摘要(Abstract)：

砖混楼房在爆破振动作用下发生破坏是工程中的常见现象。基于武汉阳逻港口某土石方爆破工程,进行了邻近砖混楼房的爆破振动测试,并结合自适应最优核时频和小波包方法,分析了爆破振动信号特性及振动能量分布特征,研究了爆破作用下砖混楼房的振动效应。结果显示:振动信号以80 Hz及以下的低频为主,且每层楼均有两个能量主要分布频带;随着楼层增高,振动总能量逐渐减小,主频持续时间逐渐增加,且x、y、z三个方向的主频向低频方向移动;同时,x、y方向与z方向振动特性变化规律存在差异,x、y方向能量区间缩小并且能量峰值逐渐降低,z方向能量区间则为先扩大后缩小,能量峰值为先增加后降低。

关键词(KeyWords)： 爆破振动;砖混楼房;时频特性;边际谱;能量分布

Abstract:

Keywords:

基金项目(Foundation): 湖北省自然科学基金青年基金(2016CFB336)

作者(Author): 雷涛,程瑞山,叶海旺,冉成,赵亮,强小刚

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