중첩모델링자료를 활용한 발파 동해석기법에 관한 연구

Abstract

Since blast-induced vibration may cause serious problem to the rock mass as well as the nearby structures, the prediction of blast-induced vibration and the stability evaluation must be performed before blasting activities. Dynamic analysis has been increased recently in order to analyze the effect of the blast-induced vibration. Most of previous studies, dynamic analysis has been performed by using measurement vibration waveform which is measured by bore hole blasting or test blasting. The waveform made by bore hole blasting has the similar vibration level and duration to those the waveform of sing hole has. However, there can be a little difference in attenuation characteristics with the blast induced vibration waveform in the field. Measurement vibration waveform measured by bore hole blasting has a weak point that it should be preceded by real scale blasting in construction process. Through the superposition modeling of single hole waveform, I obtained the vibration waveform on the blasting condition changes and conducted dynamic analysis using this waveform in this study. The outcome from this study can be exercised in design process for data for evaluating the computed demage ranges in nearby rock mass or construction caused by blasting methods.