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Structure response and damage produced by airblast from surface mining.

Authors
Siskind-DE; Stachura-VJ; Stagg-MS; Kopp-JW
Source
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 8485, 1980 Jan; :1-111
Link
NIOSHTIC No.
10001685
Abstract
The Bureau of Mines studied airblast from surface mining to assess its damage and annoyance potential, and to determine safe levels and appropriate measurement techniques. Research results obtained from direct measurements of airblast-produced structure responses, damage, and analysis of instrument characteristics were combined with studies of sonic booms and human response to transient overpressures. Safe levels of airblast were found to be 134 dbl (0.1 Hz), 133 dbl (2 hz), 129 dbl (6 hz), and 105 dbl c-slow. These four airblast levels and measurement methods are equivalent in terms of structure response, and any one could be used as a safe-level criterion. Of the four methods, only the 0.1-Hz high-pass linear method accurately measures the total airblast energy present; however, the other three were found to adequately quantify the structure response and also represent techniques that are readily available to industry. Where a single airblast measuring system must be used, the 2-hz linear peak response is the best overall compromise.
Keywords
Mining-industry; Explosive-hazards; Explosion-damage; Surface-mining; Monitors; Air-pressure
Publication Date
19800101
Document Type
IH; Report of Investigations
Fiscal Year
1980
NTIS Accession No.
PB81-148918
NTIS Price
A07
Identifying No.
RI-8485
NIOSH Division
TCRC
Source Name
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 8485
State
MN
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