【摘要】 采用实体模型进行不同装药参数下的台阶爆破试验,通过分析各测点的振动速度幅值和波形特征来研究爆破地震波传播过程中高程放大效应的存在规律及诱发原因。结果表明,高程放大效应的强度不与装药量正相关,高程放大效应的产生与爆破中心区岩土表面的鼓包运动有关,同一台阶面上不同部位质点的振动速度衰减规律可以用"鞭梢效应"来解释。更多还原

【Abstract】 Bench blasting experiments with different charge parameters were conducted on entity models.By analyzing the vibration velocity amplitude and waveform characteristics at each measuring point,the law and inducement of elevation amplification effect during the propagation of blasting seismic wave were studied.The results show that the intensity of elevation amplification effect is not positively related to the explosive charge amount,and this effect is attributed to the bulging process of rock surface at the blasting central area.The"whipping effect"can be used to explain the attenuation law of vibration velocity at different positions on the same level.更多还原