Sequential detonation of explosive charges
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United States of America Patent
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Jul 23, 2002
Grant Date -
N/A
app pub date -
May 10, 2000
filing date -
Jul 7, 1998
priority date (Note) -
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Abstract
A control system for controlling the initiation of detonation of a series of explosive charges (13) spaced apart from each other in boreholes (12) formed in a rock medium (10) to be blasted, said system being operative to apply controlled time difference in the time interval between successive detonations of at least one phase of the series of charges, and which includes at least three successive detonations, so as to reduce the probability of consecutive stimulation and amplification of ground vibration by reason of the detonation of the charges in the rock medium.
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