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Blast vibration studies at Shullsburg Mine, Wisconsin.
Canadian Min J 1971 Jul; 92(7):49-53
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.
OP; Journal Article
Issue of Publication
Canadian Mining Journal
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division