2 Ground Vibration Prediction6.30.8
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Transcript of 2 Ground Vibration Prediction6.30.8
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7/29/2019 2 Ground Vibration Prediction6.30.8
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LBS DIST (SD .5) (PPV)
3200 2300 40.65864 1.568779
3200 2300 40.65864 0.426221
13 108 15 3.177381
1000 1200 15 0.315112
13 187 51.86447 1.091349
310 950 53.95637 0.561901
310 950 53.95637 0.211731
DIST 1 DIST 2 PPV 1 PPV 2
45 121 1.1 0.244592
50 573 2.8 0.056554
450 1050 0.4 0.127436
In all cases enter your values (under the bolded labels) over the sample values
LBS Maximum amount of explosives per delay in pounds.
DIST Distance to the point of concern.
SD^.5 Square root (.5) scaled distance.
PPV Predicted peak particle velocity.
DIST 1 Distance to the point of the known peak particle velocity.
DIST 2 Distance to the point of the point of concern.
PPV 1 The known peak particle velocity measurement.
PPV 2
DISP
PPV SD^.5
4 21.96442
4 9.319644
4 12.98964
4 3.064393
4 23.03083
4 13.01253
0.75 21.63835
Unusually High Confinement Oriard (Cons
Upper Bounds RI 8507 (Bituminous Coal
Mean Line RI 8507 (Bituminous Coal Mine
degree of certainty that the ground vibration travel path to DIST 2 is similar to that of DIST 1.
Bituminous Coal Mines
Construction Blasting
Quarry Blasting
Enter data in the fields under the bolded labels (LBS, DIST-DIST 1, DIST 2, PPV 1, PPV below) to
Unusually High Confinement Oriard (Cons
Upper Bounds Oriard (Construction Worst
Lower Bounds Oriard (Construction Best
Upper Bounds BU 656 (Quarry Production
Average BU 656 (Quarry Production Blasts
bolded (SD^2, PPV, PPV 2, and SD^2 below). Note: Only solve for PPV 2 if you have a reasonab
The peak particle velocity at the point of concern.
Upper Bounds Oriard (Construction Worst
Upper Bounds RI 8507 (Bituminous Coal
Mean Line RI 8507 (Bituminous Coal Mine
Lower Bounds Oriard (Construction Best
Ground displacement, the actual amount of ground movement.
Upper Bounds BU 656 (Quarry Production
Average BU 656 (Quarry Production Blasts
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0.75 28.55365
SD^.5 PPV
90 0.468841
36 0.512823
90 0.180729
10 0.602853
50 1.157187
90 0.277348
20 0.832879 Average BU 656 (Quarry Production Blasts
29 0.731616 Construction Average (taken from Oriard)
PPV FQ DISP
0.753 14.3 0.008381
PPV FQ ACC/g's
0.75 75 0.915622
ACC/g's FQ PPV
0.2 9 1.365193
ACC/g's PPV FQ
0.91 0.75 74.53951
Upper Bounds BU 656 (Quarry Production
Upper Bounds RI 8507 (Bituminous Coal
Mean Line RI 8507 (Bituminous Coal Mine
Upper Bounds Oriard (Construction Worst
Construction Average (taken from Oriard)
of .003. A displacement of .00315 is 5% over the limit.
over .00840 it is more than 5% over and is clearly a violation. Enforcement actions for displace
Note: The above table is applicable only at frequencies over 9.9472 (9.95) and PPV's up to 2.0.
9.9466 (9.95) is 0.50. A PPV 5% over 0.50 is 0.525. At very low frequencies, below 2.65 (possible
If ppv/frequency is on or slightly above the Z-curve graph it is important to know if it is over the
Lower Bounds Oriard (Construction Best
Unusually High Confinement Oriard (Cons
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!!
ruction, i.e. Trenching With low PF)
ines Worst Case)
Average)
solve for values under the labels not
ruction, i.e. Trenching With low PF)
Case-Not Highly Confined)
ase Lightly Confined)
Blasts Worst Case)
Average)
le
Case-Not Highly Confined)
ines Worst Case)
Average)
ase Lightly Confined)
Blasts Worst Case)
Average)
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Average)
Blasts Worst Case)
ines Worst Case)
Average)
Case-Not Highly Confined)
ents over .008 but under .00840 are at your discretion.
The limit at frequencies from 2.6526 (2.65) to
but highly unlikely), the limit is a displacement
line or to know or how far over. If the displacement is
ase Lightly Confined)
ruction, i.e. Trenching With low PF)