Mining Publication: Sound Power Level Study of a Roof Bolter
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Original creation date: January 2006
The National Institute for Occupational Safety and Health (NIOSH) has initiated a study of a roof bolter to reduce noise exposure to mine roof-bolter operators. An important segment of this research entails determining the affect of various drilling configurations on the performance (penetration rate) and sound power emissions when drilling into granite. Test conditions included using various combinations of rotational speeds and thrusts, using 2.54- and 3.49-mm- (1- and 1 3/8-in.-) diameter hexagonal and round drill steels, using vacuum and wet conditions and using drill media of differing compressive strengths. This paper details the affects of each of these variables on the performance and sound power level emission. When drilling into granite, it was found that wet drilling generated lower sound power levels and performed better than vacuum drilling.
Authors: JS Peterson, PG Kovalchik, RJ Matetic
Peer Reviewed Journal Article - January 2006
NIOSHTIC2 Number: 20031470
Trans Soc Min Metall Explor 2006 Jan; 320:171-177
See Also
- Analysis of a Mechanism Suspension to Reduce Noise from Horizontal Vibrating Screens
- Determining Underground Roof Bolting Machine Operators Noise Exposure Using Laboratory Results
- Development of Roof-Bolting Machine Bit and Chuck Isolators for Drilling Noise Reductions
- The Evolution of Drill Bit and Chuck Isolators to Reduce Roof Bolting Machine Drilling Noise
- Less Sound Underground: Reducing Roof Bolting Machine Drilling Noise
- A Noise Control for A Roof Bolting Machine: Collapsible Drill Steel Enclosure
- Noise Controls For Roof Bolting Machines
- Results of Noise Measurements from Underground Testing of a Roof Bolting Machine Duty Cycle
- A Technique for Estimating the Sound Power Level Radiated by Pneumatic Rock Drills and the Evaluation of a CSIR Prototype Rock Drill with Engineering Noise Controls
- Water Well Safety Bits: Health And Safety Information For The Water Well Industry
- Content source: National Institute for Occupational Safety and Health, Mining Program