Through the observation on change rules of sound speed and blasting vibration peak velocity in the same point before and after blasts,the damage coefficience of rock mass was calculated by combining the sound speed and the monitored results of blasting vibration.The monitored and calculated results show that on the condition of the cumulative damage of blasts,the blasting vibration attenuated exponentialy along with the sound speed of rock mass.And the damage threshold of rock slope under blasting vibration...
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