爆破振动监测在立体交叉隧道工程的应用  

Application for Blasting Vibration Monitoring of Crisscrossed Tunnels

作　　者：张如[1] 范占超 王宇轩[1] 左旭[1] 

机构地区：[1]长安大学公路学院,陕西西安710064

出　　处：《洛阳理工学院学报（自然科学版）》2017年第2期39-41,共3页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

摘　　要：某市政隧道上跨既有高铁隧道,最小净距7.4 m,所穿越围岩为含泥质石灰岩,采用钻爆法进行开挖。为保证隧道安全高效穿越交叉段,进行了爆破振动监测,并依此对爆破方案进行动态调整。结果表明,爆破振动监测指导爆破方案动态调整的方法可以满足施工要求,在实践中可行。此外,对监测数据进行了统计,并从峰值振速和主震频率两方面进行了分析。A municipal tunnel crisscrossed a lower high-speed railway tunnel. The net distance between the two tunnel is only 7.4 meters. The surrounding rock was argillaceous limestone, borehole -blasting method was used in the project. To ensure the construction safe and efficiency, blasting vibration was monitored. Blasting scheme was improved continuously according to the monitoring results. The results show that improving the blasting scheme continuously according to the monitoring results was a good method. Besides that, the peak vibration velocity and the main blasting frequency are analyzed.

关 键 词：交叉隧道 爆破振动 振动监测 数据分析 

分 类 号：U451[建筑科学—桥梁与隧道工程]