摘要
工程爆破中一般用质点振速作为衡量爆破震动强度的参数 ,并按质点振动公式来进行计算 ,但这样往往不能全面地反映爆破震动所产生的破坏作用。本文在对台阶微差爆破震动测试的基础上 ,通过回归分析 ,得到了爆区附近不同位置的振速衰减规律及适用于砂质泥岩和砂质页岩等均质岩体的频率特性 ,同时提出了爆破震动在边坡坡缘处的振速放大效应以及频率的调制作用 。
As we know, in engineering blasting the parameters of particle vibration are generally taken as indices to indicate the vibration intensity as well as used to calculate other corresponding parameters according to the formula of particle vibration. But the quotation often cannot reflect the destruction resulted from the blast vibration. Based on the practical vibration measurement with the delayed blasting and regression analysis, the present paper has found the regulation of the blasting vibration vicinity attenuation and the frequency characteristic of different seats of the blasting area. At the same time, it has put forward the magnification effect and the modulation of the vibration frequency at the slope edge. The above analyses and findings may bring about significant implications to the actual blasting practice.
出处
《安全与环境学报》
CAS
CSCD
2003年第2期36-39,共4页
Journal of Safety and Environment
关键词
爆破
测试分析
振速
频率
高程
blasting
measurement and analysis
vibration speed
vibration frequency
elevation
