水下钻孔爆破水底振动信号的频带能量分布研究  

Study on Band Energy Distribution of Underwater Blasting Vibration in Underwater Drilling Blasting

作　　者：詹发民[1] 王振雄 赵守田 顾文彬 李磊 余留芳 ZHANG Famin;WANG Zhenxiong;ZHAO Shoutian;GU Wenbin;LI Lei;YU Liufang(Navy Submarine Academy,Qingdao 266042,China;Research Institute of Chemical Defence,Beijing 102205,China;Army Engineering University,Nanjing 210007,China)

机构地区：[1]海军潜艇学院,山东青岛266042 [2]军事科学院防化研究院,北京102205 [3]陆军工程大学,南京210007

出　　处：《兵器装备工程学报》2019年第8期111-118,共8页Journal of Ordnance Equipment Engineering

基　　金：国家重点研发计划(2017YFC0209901)

摘　　要：为研究装药量、水深、爆心距及场地条件对水下钻孔爆破水底振动能量在不同频带分布的影响,采用自主研发的水下爆破振动测试系统监测水底岩石的振动信号,利用小波包分解获得振动信号不同频带的能量分布情况。水底测点的振动信号的大部分能量都集中在100 Hz以下,相同的爆心距,随着装药量增大,振动能量更多集中在低频部分;水越深,水底产生的振动能量越大,爆区水越深,振动能量的低频部分越大,测点水越深,振动能量分布越离散;当测点与爆区之间正高程时振动强度放大,负高程振动强度减弱,沟槽效应的影响与陆地爆破地震波的传播规律一致。In order to study the effects of charge,water depth,blasting distance and site conditions on the underwater vibration energy of underwater drilling blasting in different frequency bands,the self-developed underwater vibration test system was used to monitor the vibration signal of the underwater rock,and the wavelet packet was used to decompose the energy distribution of the vibration signal band.The analysis results show that most of the energy of the vibration signal of the bottom measurement point was concentrated below 100 Hz.With the same blasting distance,as the charge increases,the vibration energy was concentrated in the low frequency.The deeper the water,the greater the vibration energy of the bottom point,the deeper the water in the explosion zone,the larger the low frequency part of the vibration energy,the deeper the water was measured,the more the energy distribution was dispersed.When the elevation between the measuring point and the explosion zone is positive,the vibration intensity is amplified,and the negative elevation vibration intensity is weakened.The effect of the trench effect is consistent with the propagation law of land blasting seismic waves.

关 键 词：水下钻孔爆破 爆破振动 小波包分解 能量分布 频带能量 

分 类 号：TD235[矿业工程—矿井建设]