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Site-specific predictions of ground vibrations induced by blasting

Conference · · Prepr., Soc. Min. Eng. AIME; (United States)
OSTI ID:6417119
Vibrations from thirty-seven blasts were monitored using three seismographs. Data analysis showed that square root, cube root, and site-specific scaling predicted ground motion with equal reliability. Imprecise prediction is caused by geologic and blast variability, particularly inaccurate delay times. Vibrations at some mines were consistently lower or higher than vibrations reported in the U.S. Bureau of Mines studies. Regulations based on USBM data could then be too conservative or lenient. Predominant vibration frequencies were generally less than 50 Hz, but several blasts had significant energy up to 125 Hz. In some cases energy was concentrated at frequencies corresponding to delay intervals.
Research Organization:
University of Arizona, Tucson, Arizona
OSTI ID:
6417119
Report Number(s):
CONF-830317-
Conference Information:
Journal Name: Prepr., Soc. Min. Eng. AIME; (United States) Journal Volume: 83-95
Country of Publication:
United States
Language:
English