Mining Publication: A New Perimeter Control Blast Design Concept for Underground Metal/nonmetal Drifting Applications
Original creation date: March 2013
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.
Authors: SR Iverson, WA Hustrulid, JC Johnson
Report of Investigations - March 2013
NIOSHTIC2 Number: 20042113
Spokane, WA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2013-129, RI 9691, 2013 Feb; :1-67
See Also
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- A Gas Pressure-Based Drift Round Blast Design Methodology
- Novel Stopping Designs for Large-Opening Metal/Nonmetal Mines
- Propagation of EM Signals in Underground Metal/Non-Metal Mines
- Relationship Between Elemental Carbon, Total Carbon, and Diesel Particulate Matter in Several Underground Metal/nonmetal Mines
- Silica Dust Sources in Underground Metal/Nonmetal Mines - Two Case Studies
- Technology News 491 - NIOSH Releases Two New Safety Training Videos
- Technology News 501 - Measuring Very Low Air Velocities in Underground Metal/Nonmetal Mines
- Technology News 518 - Super Stopping: A Permanent Solid Stopping for Directing Ventilation Airflows in Large-opening Metal/Nonmetal Mines
- Technology News 519 - EZ-Up Curtain Stoppings: A Practical Solution for Directing Ventilation Airflows in Large-opening Metal/Nonmetal Mines
- Content source: National Institute for Occupational Safety and Health, Mining Program