【摘要】 针对九龙江北引二期改造工程引水隧洞开挖爆破施工中爆破振动进行监测,研究爆破地震波给洞口地面工程带来的振动安全影响。通过对振动监测数据的回归分析,得到了隧洞爆破振动传播衰减规律。同时,根据振动监测成果,结合隧洞爆破开挖施工特点,确定了进水口区域地面工程的施工程序,使各重要部位的爆破振动控制在了安全范围以内。在此基础上,对洞口边坡上的实测爆破振动信号进行频谱分析,研究了边坡上爆破振动信号的能量分布特性,并分析了地形地质条件对爆破地震波传播的影响特点。更多还原

【Abstract】 On the basis of blast vibration monitor in the second phase of the Jiulong River North-diversion Project,the influence of the blast vibration safety on surface engineering by blasting seismic wave is probed into.Through an analysis of the monitoring data with regression analysis,the attenuation law of blast vibration induced by blasting of water tunnel is obtained.At the same time,according to the monitoring data and the characteristics of tunnel excavation,the construction procedure of surface engineering in water intake area has been determined,which makes the blast vibration of every important part control in safety range.On this basis,some features of energy distribution of blast vibration signals on inlet slope are studied,through a spectral analysis of typical measured signals,and the influence characteristics of blasting seismic wave propagation by topography and geology condition are analyzed.更多还原