摘要
为分析多层气泡膜隔层结构对水下爆炸冲击波衰减效果,使用不同规格气泡膜并设计不同层数的空气隔层结构,以8号工业电雷管作为爆源,进行水下爆炸试验,获得水下冲击波参数,通过冲击波超压峰值与比冲击波能对比分析气泡膜对水下冲击波的衰减效果。结果表明:随着气泡膜层数的增加,冲击波超压峰值衰减率随之增加,1#气泡膜衰减率由48.32%上升至89.10%,2#气泡膜衰减率由86.08%上升至91.33%,3#气泡膜衰减率由87.87%上升至91.45%,4#气泡膜衰减率由90.34%上升至92.37%;薄膜隔层对比气泡膜空气隔层,其对水下冲击波的衰减影响比重较小,在层数相同的条件下,气泡膜气泡直径越大对水下冲击波的衰减效果越好,说明隔层结构中气泡对冲击波的衰减有着重要的作用;通过比冲击波能分析,气泡膜空气隔层比冲击波能消耗均超过98.50%以上,能量消耗显著。在实际应用中,可以使用气泡膜作为防护材料,能够有效地降低冲击波对被保护对象带来的危害。
In order to analyze the attenuation effect of multi-layer bubble film on underwater explosive shock wave,an underwater explosion test was conducted to obtain shock wave parameters with a No.8 industrial electric detonator as the explosion source.The bubble film was designed with different specifications and different layers of air insulation structure.Furthermore,the shock wave overpressure peak value and specific shock wave energy were compared based on the shock wave parameters.The results show that the attenuation rate of shock wave overpressure peak increases with the increase of bubble film number,with the attenuation rates of 1#,2#,3#and 4#bubble film increasing from 48.32%,86.08%,87.87%and 90.34%to 89.10%,91.33%,91.45%and 92.37%,respectively,which implies that the normal film has less influence on the attenuation of underwater shock wave without air interlayers.Specifically,a larger bubble diameter can reach a better attenuation effect with the same number of layers,which indicates that the bubble plays an important role in attenuating shock waves.In addition,the specific shock wave energy consumption of the bubble film is more than 98.50%.In practical applications,bubble film can be used as a protective material,which can effectively reduce the harmful effects caused by shock waves on the protected objects.
作者
梁云
吴红波
陈永佳
李基锐
黄菓树
马成帅
张政
叶风明
曾辉莲
LIANG Yun;WU Hong-bo;CHEN Yong-jia;LI Ji-rui;HUANG Guo-shu;MA Cheng-shuai;ZHANG Zheng;YE Feng-ming;ZENG Hui-lian(Guangxi New Harbor Engineering Co.,LTD.,Nanning 530200,China;College of Chemical Engineering and Blasting,Anhui University of Science and Technology,Huainan 232001,China)
出处
《爆破》
CSCD
北大核心
2024年第2期223-231,共9页
Blasting
基金
广西重点研发计划(桂科AB22035001)。
关键词
水下爆炸
空气隔层
气泡膜
冲击波衰减
比冲击波能
underwater explosion
air interlayer
bubble film
shock wave attenuation
specific shock wave energy
