The Peak Particle Velocity (PPV) of ground motion induced by blasting have been mainly used as one standard scale against the effect of surrounding structures. In recent years, however, the blast vibration is tend to be evaluated from the point of public disturbances by using the Vibration Level (VL). The VL have been derived based on the response of human body against the acceleration of ground motion. On the other hand, Japan Meteorological Agency (JMA) seismic intensity scale have been being used to evaluate the intensity of earthquake motion. The seismic intensity is determined mainly by the feeling of human body at lower scale range and the influence on surrounding objects or structures at higher scale range both with the qualitative expression.
In this study, the relation between the PPV and the VL of ground motion induced by blasting is discussed firstly and then, the relation between the JMA seismic intensity and the VL of earthquake motion is also investigated. To allow for human response against frequency range, two empirical equations have been derived for frequency range of four to eight Hz and eight to 90 Hz respectively.
As a conclusion of discussion, it was found that the vibration degree due to blasting can be evaluated by using the JMA seismic intensity scale. This results show the possibility that the vibration degree is qualitatively understood by JMA seismic intensity scale which is decided through VL.
