减振材料对圆柱水池爆破振动规律的影响  

Influence of Damping Materials on Blasting Vibration of Cylindrical Pool

作　　者：储亚坤 李萍丰 梁昊[1] 李洪伟[1] 刘伟[1] 张立果 黄昕旭 吴延梦 CHU Yakun;LI Pingfeng;LIANG Hao;LI Hongwei;LIU Wei;ZHANG Liguo;HUANG Xinxu;WU Yanmeng(School of Chemical and Blasting Engineering,Anhui University of Science and Technology,Huainan 232001,Anhui,China;Hongda Blasting Engineering Group Co.,Ltd.,Guangzhou 510623,Guangdong,China)

机构地区：[1]安徽理工大学化工与爆破学院,安徽淮南232001 [2]宏大爆破工程集团有限责任公司,广东广州510623

出　　处：《高压物理学报》2024年第6期189-199,共11页Chinese Journal of High Pressure Physics

摘　　要：在水下爆炸理论与技术的应用研究中,爆炸水池是十分重要的基础试验装置。研究爆炸水池爆破振动效应和减振对于圆柱形爆炸水池使用过程中的振动控制具有指导意义。为研究圆柱形水池内部装药爆炸对周围地面产生的爆破振动并寻求合适的减振材料,选取了建筑碎石、SD型橡胶垫2种减振材料,在小型爆炸水池中进行了单药包在无减振、建筑碎石和SD型橡胶垫减振3种模式下的爆炸试验,对采集到的爆破振动信号进行峰值振速分析、EEMD-HHT(ensemble empirical mode decomposition-Hilbert-Huang transform)处理及小波包分析。结果表明:爆炸水池周围地面的爆破振动包含爆炸冲击波导致的振动、水池跳动导致的触地振动,通过Hilbert瞬时能量分析可以有效识别水池产生的跳动;碎石减振和SD型橡胶减振垫模式下的振速较无减振模式下的振速分别降低53.0%和43.1%,振动能量分别降低64.9%和57.4%;3种减振模式下爆破振动信号的频率主要分布在10~80 Hz区间;无减振、建筑碎石减振、SD型橡胶垫3种减振模式下10~40 Hz频带的能量占比分别为79%、69%、66%,40~80 Hz频带的能量占比分别为11%、29%、31%。碎石和SD型橡胶垫具有吸能、减少低频成分和增加高频成分的效果,可有效降低近处测点的峰值振速。碎石减振模式下振动信号频带的能量分布较SD型橡胶垫模式下的能量分布更加均匀。In the application research of underwater explosion theory and technology,an explosion tank is a very important basic experimental device.The research on the blasting vibration effect and vibration damping of the explosion tank is of guiding significance for the vibration control and the selection of vibration damping materials during the blasting of the cylindrical water tank.In order to explore the impact of explosive vibration caused by the internal charge explosion on the surrounding ground of the cylindrical pool,and to seek effective vibration reduction methods,two kinds of vibration reduction materials,construction gravel and SD-type rubber vibration reduction pad,were selected,and explosion tests were carried out in a small explosive pool under three modes,single charge without vibration reduction,with SDtype rubber vibration reduction pad and with gravel vibration reduction.The collected blasting vibration signals were analyzed by peak particle velocity,EEMD-HHT(ensemble empirical mode decomposition-Hilbert-Huang transform)processing and wavelet packet analysis.The results showed that the vibration signals include the blasting vibration caused by the explosion shock wave and the ground vibration caused by the pool jumping,and the the ground vibration caused by the pool jumping can be effectively identified by Hilbert instantaneous energy analysis.Compared to the single charge without vibration reduction,the vibration velocity and vibration energy under the gravel layer modes are reduced by 53.0%and 43.1%,the vibration velocity and vibration energy for SD-type rubber cushion modes are reduced by 64.9%and 57.4%.The frequency of blasting vibration signal for the three vibration reduction modes is mainly distributed in the range of 10–80 Hz.The energy proportions for the frequency range of 10–40 Hz under the three operating modes are 79%,69%and 66%,respectively,and the energy proportions for the frequency range of 40–80 Hz are 11%,29%and 31%,respectively.The gravel and SD-type rubber have the effect of

关 键 词：水下爆炸 爆破振动 减振材料 时频分析 

分 类 号：O383.1[理学—流体力学] O521.9[理学—力学]