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Blast vibration studies at Shullsburg Mine, Wisconsin.

Authors
Olson-JJ; Dick-RA
Source
Canadian Min J 1971 Jul; 92(7):49-53
Link
NIOSHTIC No.
10010199
Abstract
The Bureau of Mines measured blast vibrations in the roof of a lead- zinc mine in Shullsburg, Wisconsin, as part of a study to determine how blast factors such as explosive type, blast design, delays, charge weight per delay, rock type, and geologic structure affect maximum vibration amplitudes in different underground environments. Maximum vibration amplitudes were produced by the charge weight detonated with the zero delay caps. Peak particle velocities from the shullsburg production blasts, scaled by the square root of the charge weight per delay, fell within the approximate band-width of velocity data obtained from many quarries in different rock types. This grouping of data indicated that scaling vibrations by some factor of the charge weight, perhaps the square root or cube root may, as found in the Bureau of Mines quarry blast studies, be an effective way to group and study vibration data from underground blasts.
CODEN
CAMJA9
Publication Date
19710701
Document Type
OP; Journal Article
Fiscal Year
1971
NTIS Accession No.
NTIS Price
Identifying No.
OP 142-71
Issue of Publication
7
ISSN
0008-4492
NIOSH Division
TCRC
Source Name
Canadian Mining Journal
State
WI; MN
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