【摘要】 通过对地震波通过不同宽度预裂缝传播规律的数值模拟分析,和对预裂缝的减振效果进行了量化分析,了解预裂缝宽度对减振效果的影响规律,掌握了在一定范围内(即在r≤r0,r0为定值),减振效果随着预裂缝缝宽的增加而增加,当缝宽r≥r0时,缝宽对预裂缝减振效果的影响减弱。更多还原

【Abstract】 Transmitting principle of blasting vibration wave through pre-splitting blasting crack is analyzed by numerical simulation.The effect of pre-splitting blasting crack width on vibration attenuation is quantitatively analyzed.The results show that the effect of vibration isolation and damping increases with pre-splitting crack width in a certain value.When the crack width of pre-splitting blasting exceeds the value,its effect on damping vibration gets smaller and smaller.更多还原