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Abstract The effect of blast-induced seismic on buildings can be considered as a transferred and transformed process of the energy. Considering the command of blasting vibration control，it is necessary to know the attenuation law of blast-induced seismic，in order to make relatively accurate estimate for the extent of the buildings affected by blasting vibration. Based on seismology theory，energy attenuation law of blast-induced seismic wave is studied. It turns out that the attenuation coefficient for the peak energy is of twice that for the peak particle velocity(PPV). During a same blasting，the total energy of blast-induced seismic is of direct proportion with square of the peak particle velocity. Example analysis shows that theoretical derivation is correct，and energy of blast-induced seismic wave decays very quickly with the increase of the distance. Attenuation charismatic characteristics of blast-induced seismic are different from the earthquake，so these difference must be paid special attention when the methods usually applied in earthquake engineering are employed to study the dynamic response characteristic of blast-induced seismic.
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Received: 03 November 2008
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