Careful Blasting to Reduce the Level of Ground Vibration in Open Excavation

노천 굴착에서 발파 진동의 크기를 감소시키기 위한 정밀발파

In this paper, ground vibration and other properties measurements were conducted to deter mine empirical equation based on careful test blasting with crawler drill(diameter 70-75mm). The empirical euqations for ground vibration are obtained as follows where V is peak particle velocity in cm 1 sec, D is distance in m and W is maximum charge weight per delay in kg