A new perimeter control blast design concept for underground metal/nonmetal drifting applications
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Contributions
- Johnson. Jeffrey C. - Contributor
- National Institute for Occupational Safety and Health. Office for Mine Safety and Health Research - Contributor
Publication
2013 - Deptartment of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Office of Mine Safety and Health Research, Pittsburgh, PA, Pennsylvania
Language
English
Word Count
16,750 words, Guess
Page Count
67 pages
Identifiers
- Library of Congress Control Number2013376854
- OCLC Control Number829393785
- Open LibraryOL31303757M
Classifications
- LCCT279 .N69 2013
Description
This report presents a new concept in perimeter control blasting for underground metal/nonmetal mine drifting applications focusing on the importance of the buffer holes in a blast design. The new blast design concept applies the understanding of radial damage that is caused by the buffer hole column charge. Buffer hole radial damage is defined by a practical damage limit applied to the rock lying between the buffer holes and the perimeter. A favorable comparison was made between five successful controlled blast designs and the concept of practical damage limit. This concept is easy to use and acceptance of the approach would only require mines to conduct trial blasts to test the design theory.
Subjects
Topics
Series Statement
- Report of investigations -- 9691
- DHHS (NIOSH) publication -- no. 2013-129.
- Report of investigations (National Institute for Occupational Safety and Health) -- 9691.
- DHHS publication -- no. (NIOSH) 2013-129.
Links
Other Editions
- A new perimeter control blast design concept for underground metal/nonmetal drifting applications
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