ABSTRACT
Within the frame of this study, multiple 4-and
8-channel instruments with 3-component geophones
were used. The geophones were calibrated and author-
ized according to the DIN 45669-1 and 2 (1995). The
dynamic influence is recorded by measuring the peak
particle acceleration, the peak particle velocity, or the
peak particle displacement. The frequency response
of the sensors installed in the near-field region of the
blast and the far-field range is 1 to 315 Hz. Therefore,
the measurement of the peak particle velocity and the
related frequency is implemented as a surrogate value
for blast vibrations. These high-tech instruments and
the software for data evaluation are applied world-
wide. The systematic measurement of the peak par-
ticle velocity and the long-term experiences in soil
dynamics resulted in the finding, that the outgoing
vibrations energised peak particle velocities and fre-
quencies at the recording point that are influenced by
the underground conditions at the location of the geo-
phone. The initiation of a similar dynamic momen-
tum to the underground was chosen as a test case to
1 AIMS OF THE STUDY
The currently applied methods and procedures for
vibration forecast are empirical and based on sim-
plified correlations. This study was carried out to
improve the prediction of the intensity and spatial dis-
tribution of vibrations to avoid unwanted side-effects.
