Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

In this study, the small-scaled RC structure which has a specific relationship of similitude with the prototype RC structure was designed and fabricated. As the small-scaled RC structure was demolished by means of the felling method, occurred the ground vibration was divided by the blasting vibration and the impact vibration. Also, against the soil layer and the concrete layer where ground conditions were different each other, it analyzed peak particle velocity and dominant frequency in each direction. According to the analysis, the impact vibration was occurred a higher peak particle velocity than the blasting vibration independently ground conditions. As the point of measurement was receded, peak particle velocity decreased. In the case of blasting vibration, peak particle velocity decreased by receding the point of measurement from the concrete layer, but it was not visible a clear tendency from the soil layer. The blasting vibration has a higher dominant frequency band than the impact vibration. The dominant frequency band of the ground vibration was similar to that of the impact vibration.