【摘要】 爆破振动主频就是通过对边坡自振频率的接近程度来影响其对边坡的稳定性评价 ,故求得边坡自振频率具有十分重要的意义。在露天矿常规生产的多段微差爆破条件下 ,根据粘滞阻尼受迫振动方程和爆破振动实地监测 ,提出了一种基于边坡振动幅频特性的自振频率求算方法 ,并由实例验证了该方法。更多还原

【Abstract】 The dominant blast vibration frequency affects the evaluation of slope stability under the condition of blast vibration via its being close to the natural frequency of slope.Therefore,it’s of great significance to work out the natural frequecy of slope.Under the normal production conditions of multi stage split second blasting and in accordance with the viscous damping forced vibration equation and in situ monitoring of blast vibration,a method of working out the natural frequency based on the amplitude frequency characteristic of the slope vibration is presented,which is proved by some cases.更多还原