Surface Wave Induced Ground Particles Vibration at Eastern And Western Ethiopian Plateaus
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Date
2005-07
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Addis Ababa Universty
Abstract
Blasting of explosives on or under the surface of the earth always induce seismic
wave of all kinds that propagate in every direction away from the point of explosions. In
the course of seismic propagation in ground medium, ground vibration will occur that
may result distraction on man made structures unless appropriate seismic method of
pre-Explosion ground vibration prediction are made to determine the size of explosive
energy to be applied and relative distance of shot and man made structures are
estimated.
In this research ground vibration prediction is made on the West and East
Ethiopian plateau from surface wave recordings from two 900 kg and 1900 kg and
1100 Kg explosions made at Gohatsion and Gebre Guracha and Kula areas and peak
ground vibration measurement made by Guralp 6TD seismic recorder at different points
along EAGEAL profile 1.
As a result, the measured PPV at the western plateau is over determined by the
oriard minimum prediction formula at large distances while at the Eastern plateau the
observed value is greater than the prediction obtained from the Oriard maximum
prediction formula.
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Keywords
Surface Wave