基于地表结构安全的爆破设计与振动控制  

Blasting Design and Vibration Control Based on Surface Structure Safety

作　　者：赵丹[1] Zhao Dan(Changzhi Vocational and Technical College,Changzhi Shanxi 046000,China)

机构地区：[1]长治职业技术学院,山西长治046000

出　　处：《山西冶金》2023年第10期73-74,共2页Shanxi Metallurgy

摘　　要：通过采用新方法进行地下爆破实践,结果表明:在居民区附近的爆破产生了较低水平的振动,完全在可接受的范围内。在连续两个切割孔中间在两个连续的切割孔之间使用200~300 ms的延迟间隔,可获得良好的爆破效果。电子起爆系统产生的振动水平低于导爆管起爆系统产生的振动水平,振动级降低了12.5%。环形孔爆破时孔之间的延迟间隔为40 ms和80 ms,甲板之间的延迟间隔为20~80 ms,导致振动水平降低。数据表明,随着结构高度的增加,振动水平降低,频率高,结构振动水平降低,获得的碎片是最佳的。Through the use of new methods for underground blasting practice,the results show that blasting near residential areas has generated lower levels of vibration,which is completely within an acceptable range.Using a delay interval of 200~300 ms between two consecutive cutting holes can achieve good blasting results.The vibration level generated by the electronic initiation system is lower than that of the detonating tube initiation system,with a 12.5%reduction in vibration level.The delay interval between holes during circular hole blasting is 40 ms and 80 ms,and the delay interval between decks is 20~80 ms,resulting in a decrease in vibration levels.The data shows that as the height of the structure increases,the vibration level decreases.When the frequency is high,the vibration level of the structure decreases,and the obtained fragments are the best.

关 键 词：地下爆破 爆破振动 起爆系统 

分 类 号：TD235.14[矿业工程—矿井建设]