【摘要】 针对田湾核电站二期工程台阶爆破引起的振动对一期工程建筑物的影响,在现场对离爆破地点最近且最敏感的核岛进行了爆破振动监测。本文对采集的数据进行了较全面的分析,得出了台阶爆破振动质点振动加速度衰减参数k、α的最佳取值;同时得出在当地条件下,爆破振动加速度与比例距离的关系、爆破振动加速度与不耦合系数的关系,并发现水平方向爆破振动加速度的峰值是垂直方向上的3～5倍。这些爆破振动监测数据与分析结果,为后期施工提供了理论和技术指导。更多还原

【Abstract】 Considering the potential vibrating impact caused by the bench long hole blasting conducted in second-stage construction of Tianwan nuclear power station on the buildings built in first-stage project,blasting vibration of nuclear pile closest to blasting site and most susceptive to blasting was monitored,and the data collected from monitoring was analyzed. The present paper,based on a comprehensive analysis of the collected data,elicited the optimum value range of attenuation parameters (k and α) of vibrating acceleration of vibrating particle in bench blasting seism in this region. And meanwhile,it also deduced the correlation between blasting vibration acceleration and proportional distance,and that between blasting vibration acceleration and uncoupled coefficient under local site conditions. Furthermore,the paper found the fact that the peak value of blasting vibration acceleration in the horizontal direction was three to five times of that in the vertical direction. These studies provided theoretical and technological guidance to the later construction of this project.更多还原