Ground and air vibrations caused by surface blasting. Volume 1. Executive Summary. Open file report (final) 1 October 1980-30 September 1983

Technical Report · Thu Sep 01 04:00:00 EDT 1983

OSTI ID:6613826

Daemen, J J.K.; Barkley, R C; Ghosh, A; Morlock, C R; Shoop, S A

Ground and air vibrations induced by large surface blasts were monitored and the field results, as well as a large number of published results, were used to assess the performance of existing predictors and for the development of improved prediction methods. Field monitoring was performed with four seismographs giving complete wave records at limestone quarries, coal strip mines, and an open pit copper mine. Conventional analysis includes least square fitting of peak particle velocities and peak air overpressures with scaled distance formulations. Frequency content was analyzed and correlated with blast design (detonation sequence). Two new methods were developed to predict ground vibrations induced by blasting. The proposed analytical predictor accounts explicitly for inelastic attenuation and geometrical spreading, and calculates the peak particle velocity as a function of charge weight and distance. Statistical analysis of case studies confirms the consistent improvement over conventional scaled distance predictors. The second new predictor is a computer program simulating blasts including blast geometry, charge distribution, and detonation sequence and simulating propagation of individual pulses to any point of interest where effects are summed. A complete blast vibration results allowing prediction of frequency content and duration as well as peak velocities.

• Research Organization: Arizona Univ., Tucson (USA). Dept. of Mining and Geological Engineering
• OSTI ID: 6613826
• Report Number(s): PB-84-191931
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
BLAST EFFECTS
COAL MINING
COMMINUTION
COMPUTERIZED SIMULATION
DAMAGE
EXPLOSIVE FRACTURING
FORECASTING
FRACTURING
MEASURING INSTRUMENTS
MINING
NOISE
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMIC EFFECTS
SEISMOGRAPHS
SHOCK WAVES
SIMULATION
SURFACE MINING