近距离爆破对隧道结构影响的监测和HHT分析  

MONITORING AND HHT ANALYSIS ON THE INFLUENCE OF TUNNEL STRUCTURE BY CLOSE DISTANCE BLASTING

作　　者：李顺波[1] 杨军[1] 夏晨曦[1] 刘杰[1] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《工程爆破》2013年第3期6-9,5,共5页Engineering Blasting

摘　　要：近距离爆破产生的振动对隧道的安全有着不良的影响,根据现场监测的爆破振动数据进行回归分析和HHT变换分析。结果表明:在现有的爆破药量作用下,采石场的爆破作业不会对在建和已建隧道产生影响,瞬时能量能够很好地表征结构在瞬时受到的冲击情况,同时比单一速度分析更能直观地反映爆破振动对结构的影响,对相关工程具有一定的借鉴意义。There was a harmful effect on the safety of the tunnel by close distance blasting vibration.HHT and regression analysis were used to analyze the monitoring data of blasting vibration.The results showed that with the quantity of explosive in existence,blasting operations could not impact the tunnel which had been built or was in construction;the instantaneous energy could be well used as a characterization of the impact of the structure in the momentary,while it could more intuitively reflect the influence of blasting vibration on the structure than analysis by single speed.It has some guiding significance to related projects.

关 键 词：爆破振动 监测分析 HHT变换 隧道 

分 类 号：TU472[建筑科学—结构工程]