小水池中延时爆破对地表振动的测试与分析  

Test and Analysis of Ground Surface Vibration during the Delay Blasting in Small Pool

作　　者：闫大洋 胡坤伦[2] 叶图强[1] 孙平[2] 韩体飞[2] 

机构地区：[1]广东宏大爆破股份有限公司,广东广州510623 [2]安徽理工大学化工学院,安徽淮南232001

出　　处：《爆破器材》2014年第4期42-46,共5页Explosive Materials

摘　　要：为了研究水下延时爆破对地表振动的影响，在某一小水池中，采用不同延时药包组合引起地表振动，对其进行测试。试验中各组合总药量相同．药包个数不同，对地面产生的振动速度和主振频率采用UBOX-5016型振动自记仪进行测试和分析。研究并发现毫秒延时爆破能有效降低爆破振动，通过选出的较优延时组合，初步估计合理的延时间隔为25～50ms。Ground vibration tests at different charge delay intervals were conducted in a small pool to study the impact of underwater delay blasting on the vibration of ground surface. During the experiment, the charge number was various for each group at a constant charge quantity in total. The ground vibration velocities and main frequencies were tested and analyzed by UBOX-5016 blasting vibration recorder. The study shows that millisecond delay blasting can effec- tively reduce the blasting vibration. The reasonable delay interval was preliminarily estimated to be 25-50ms at optimized charge delay interval.

关 键 词：微差爆破 地面振动速度 主振频率 

分 类 号：TD235[矿业工程—矿井建设]