摘要
由工程爆破中普遍采用的质点峰值振动速度与炸药量和震源距关系的经验公式推导出质点峰值振动速度与震源能量和震源距关系的经验公式,并作为微震地震波能量衰减公式.在公式中引入地震波能量特征系数K1描述震源能量与震源峰值振动速度之间的比例关系,并认为K1主要与震源场地介质特征有关,而与爆破参数无关.通过校验炮数据的回归分析获取监测区域能量特征系数K1.采用能量衰减模型,以微震事件各测点的峰值振动速度、震源距及K1为已知量,以震源能量及衰减系数为回归参数进行回归计算,直接反演出震源能量.本文方法为震源能量计算提供了新的思路和方法.
An empirical formula to describe the relation of particle vibration velocity to explosive＇s quantity and distance from the explosion center is used in the blasting engineering field. Based on this formula, a new empirical equation to characterize the relation of particle vibration velocity to hypocenter energy and distance to the hypocenter is presented in this article, which is considered as the attenuation formula of seismic wave energy. In the new equation, the coefficient of seismic wave energy, K1, is introduced to describe the relationship between hypocenter energy and particle vibration velocity. It is thought that K1 has strong relationship with the locale medium characteristic of the hypocenter, nothing to do with the blasting parameters. According to the energy data of check points, K1 is calculated by regression analysis. By using the energy attenuation model, taking particle vibration velocity, distance to the hypocenter and K1 of each mieroseismic incident as the known parameters, hypocenter energy and attenuation coefficient as the regression parameters, the hypocenter energy can be obtained by inverse calculation. This method provides a new idea to calculate the hypocenter energy.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2013年第6期703-708,共6页
Journal of University of Science and Technology Beijing
基金
国家重点基础研究发展计划资助项目(2010CB226803)
国家自然科学基金资助项目(51104011
51274020)
关键词
采矿
爆破
地震波
监测
衰减
回归分析
mining
blasting
seismic waves
monitoring
attenuation
regression analysis
