浅埋隧道开挖爆破监测及振动效应  

Blasting Monitoring and Vibration Effect of Shallow Buried Tunnel Excavation

作　　者：李章珍[1] 苏建遥 董捷[1] 赵国栋[1] 张治[1] 

机构地区：[1]河北建筑工程学院土木工程学院,河北张家口075000

出　　处：《筑路机械与施工机械化》2017年第7期115-118,共4页Road Machinery & Construction Mechanization

摘　　要：以某隧道进口工区浅埋区段隧道开挖爆破工程为依托,采用现场监测技术,开展浅埋隧道开挖爆破振动效应的研究。通过对现场监测数据进行回归分析,计算出适用于本工程质点振动速度的萨道夫斯基公式,为爆破振动的控制提供依据;对监测数据作傅立叶变换,确定浅埋区段开挖爆破振动的主频域范围。结果表明:岩层具有高频滤波特性,爆破地震波的主频域随爆心距的增大逐渐由高频转向低频,具有明显的衰变特性。Based on the excavation and blasting project of a shallow buried tunnel, the research on the vibration effect caused by the excavation and blasting was carried out through field monitoring technology. Based on the regression analysis of the on-site monitoring data, the Sadovsky formula suitable for the vibration velocity of the project was calculated, which provides the basis for the control of blasting vibration. The Fourier transform of the monitoring data was used to determine the frequency range of the blasting vibration of the shallow buried section. The results show that the strata possess the characteristics of high frequency filter; the main frequency domain of the blasting seismic wave is gradually changed from high frequency to low frequency, and has obvious decay characteristics.

关 键 词：浅埋隧道 爆破振动 现场监测 振动频率 

分 类 号：U455.41[建筑科学—桥梁与隧道工程]