摘要
为解决水下爆破作业中所遇到的相关问题,采用数值模拟和工程试验的方法,分析了不同起爆方式对爆破有害效应的影响,同时对比了采用工业电子雷管孔内不同起爆顺序对爆破效果影响及气泡帷幕对降低冲击波的影响。数值模拟结果表明:采用工业电子雷管逐孔起爆方式在控制爆破振动及冲击波中具有较大优势,最大降振率达71.63%,最大削波率达73.20%,采用孔内上部优先起爆的顺序可以有效地改善大块率及根底现象,水下气泡帷幕较大程度上削弱了爆破冲击波,工业电子雷管在水下爆破中的应用可减弱爆破有害效应、改善爆破效果、避免盲炮,可为同类工程提供相应参考。
In order to solve the relevant problems encountered in underwater blasting operations,the methods of numerical simulation and engineering practice were adopted to analyze the influence of different initiation methods on the harmful effects of blasting.At the same time,the influence of different initiation sequences in the hole with industrial electronic detonators on the blasting effect and the influence of the air bubble curtain on reducing the shock wave were compared.The numerical simulation results show that the hole-by-hole initiation method with industrial electronic detonators has a great advantage in controlling blasting vibration and shock wave,with the maximum vibration reduction rate reaching 71.63%and the maximum shock wave reduction rate reaching 73.2%.The sequence of preferential initiation from the top with millisecond delay in the hole can effectively improve the rate of large blocks and the base phenomenon.The air bubble curtain weakens the blasting shock wave to a large extent.The application of industrial electronic detonators in underwater blasting can reduce the harmful effects of blasting,improve the blasting effect and avoid misfired charges,which can provide corresponding references for similar projects.
作者
程浩伦
程贵海
李程遥
石晨晨
王毅
李郎
CHENG Hao-lun;CHENG Gui-hai;LI Cheng-yao;SHI Chen-chen;WANG Yi;LI Lang(Chengdu New Technology Blasting Engineering Co.,Ltd.,China Railway No.2 Group,Chengdu 610031,China;CREC Foundation and Blasting Professional R&D Center,Chengdu 610000,China;Academy of Resources,Environment and Materials Science,Guangxi University,Nanning 530004,China)
出处
《工程爆破》
CSCD
北大核心
2024年第4期111-117,共7页
Engineering Blasting
基金
广西大学工程爆破研究所开放基金资助项目(20210806)
中国中铁爆破安全技术研发中心自主科研课题项目(2022002)。
关键词
水下爆破
工业电子雷管
数值模拟
盲炮率
爆破效果
underwater blasting
industrial electronic detonator
numerical simulation
misfire rate
blasting effect
