A Mine Explosion Source Phenomenology Experiment
WESTON GEOPHYSICAL CORP LEXINGTON MA
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The seismic and acoustic discrimination of large surface and underground mine blasts, including mine collapses and rock bursts, continues to be a difficult scientific problem Report of a Working Group from Government, Industry and National Laboratories, 1999. Under a Comprehensive Nuclear-Test-Ban Treaty monitoring regime the discrimination of signals from such large mine blasts may be ambiguous. The difficulty is due, in part, to the lack of complete understanding of the source models for the seismic and acoustic signals, the fact that mines operate in both soft and hard rock environments, use different blasting techniques and signals from such activities will most likely be recorded regionally, which are difficult to interpret. Alternatively, if controlled mine blast experiments could be performed, in close collaboration with the mining industry, significant knowledge could be gleaned to reduce the chance of false alarms from such mining activities and, hopefully, provide the mining industry with useful information to conduct more cost-effective blasting operations. In addition, these experiments could also be used to provide important empirical calibration information for the International Monitoring System IMS. It is important to conduct such experiments in the full spectrum of mining locales and geographical regions, including both hard and soft rock environments. One of the goals of this effort is to engage the mining industry in a variety of collaborative experimental field efforts in which both the seismic monitoring community and mining industry benefit from the resulting exchange of ideas and information. In concert with the above, a controlled mining experiment was suggested by Walter et al., 1999, in which a surface delayed-fired production explosion and a buried single explosion zero delay are collocated and detonated simultaneously.
- Mining Engineering