褚怀保,余梦飞,严少洋,王昌,孙博

• 1:河南理工大学土木工程学院

摘要(Abstract)：

为探究高压气体爆破与炸药爆破振动特征差异，根据压缩气体与水蒸气容器爆破能量法建立了不同气体压力与炸药的当量关系，设计开展了模拟岩体高压气体爆破与炸药爆破振动试验。基于试验结果对2种爆破振动持续时间和振动速度进行了分析，并利用小波包变换技术对2种振动信号能量在频域上的分布规律进行了对比分析。试验结果表明：高压气体爆破振动持续时间远大于炸药爆破振动持续时间，2种爆破振动持续时间均随着距离的增大而减小；且高压气体爆破振动持续时间随着爆压的增大而减小，但炸药爆破振动持续时间随当量大增大而增大。高压气体爆破振动速度远小于炸药爆破，但随着距离的增大，2种爆破振动的峰值趋于接近，且高压气体爆破振动速度较炸药爆破振动速度衰减缓慢。随着距离的增大，高压气体爆破与炸药爆破振动信号主频带向低频转移并且主频带所占能量比例逐渐降低；与炸药爆破相比，高压气体爆破振动信号属于更加低窄频的信号、能量在频域上更集中、主频带能量占比较高。

关键词(KeyWords)： 高压气体爆破;振动;持续时间;小波包;能量分布

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51874123)

作者(Author): 褚怀保,余梦飞,严少洋,王昌,孙博

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