RICHARD LLANOS PEÑA
Blast Design
Blast Dynamics Inc.
© 2006 RICHARD LLANOS PEÑA
Page 1
fficient Blast Design
I.
BASIC BLAST DESIGN
A.
Define the blast’s objective before designing the blast
(fragmentation, displacement, vibration control, etc.
)
B....
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RICHARD LLANOS PEÑA
Blast Design
Blast Dynamics Inc.
© 2006 RICHARD LLANOS PEÑA
Page 1
fficient Blast Design
I.
BASIC BLAST DESIGN
A.
Define the blast’s objective before designing the blast
(fragmentation, displacement, vibration control, etc.
)
B.
Determination of Blast Parameters - Rules Of Thumb
1.
Bench height
a.
bench heights are normally dictated by site
parameters
b.
if the height (metres) is not predetermined then it
should be greater than the charge diameter (mm)
divided by 17 to achieve good energy distribution
c.
drill deviation can be a problem when the bench
height is more than four times the burden dimension
2.
Charge diameter
a.
the selection of the blasthole diameter is a key
factor in efficient blasting
b.
the maximum suggested charge diameter (mm)
should be equal to the bench height (m) multiplied
by 17
Efficient Blast Design
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