Frequency analysis and the use of response spectra for blast vibration assessment in mining
- Bureau of Mines, Minneapolis, MN (United States). Twin Cities Research Center
In the period 1989 to 1994, the US Bureau of Mines assisted the Office of Surface Mining, Reclamation and Enforcement (OSM) in studying a high-complaint situation near an active surface coal mine. As part of a review for its project report, the Bureau had to address issues on the adequacy of the safe blasting criteria and analysis procedures in its 1980 report RI 8507, Structure Response and Damage Produced by Ground Vibration From Surface Mine Blasting. Because the criteria in RI 8507 are used in assessing current blasting, key questions were raised about how protective these criteria are and whether they used the most current or, at least, the most conservative (protective) analysis procedures. These issues were frequency determination, response measurement, control of vibration through design, and the use of scaled distances for amplitude estimates. The first two of these four issues are highly relevant to regulatory compliance and safe vibrations as measured at the compliance stations and are addressed in this paper. Part 1 discusses frequency analyses methods including zero crossings and its variants as well as some Fourier methods. Specifically, it describes the approach to frequency made for RI 8507 in the late 1970`s and suggests future possibilities. Part 2 describes response spectra analysis methods, some applications to mine blasting, and why this approach was not recommended for residences by the Bureau in 1980 and still not today.
- OSTI ID:
- 398369
- Report Number(s):
- CONF-960234-; TRN: IM9649%%577
- Resource Relation:
- Conference: 12. annual symposium on explosives and blasting research, Orlando, FL (United States), 4-8 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the twelfth annual symposium on explosives and blasting research; PB: 271 p.
- Country of Publication:
- United States
- Language:
- English
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