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The National Institute for Occupational Safety and Health (NIOSH)





Mining Publication: Sound Power Level Study of a Roof Bolter
Keywords: Bolters Drilling Drills Noise Noise and vibration control 
 Sound power level
Original creation date: January 2006
Authors: JS Peterson, PG Kovalchik, RJ Matetic
Peer Reviewed Journal Article - January 2006
Download PDF Document (1.68 MB)
NIOSHTIC2 Number: 20031470
Trans Soc Min Metall Explor 2006 Jan; 320:171-177
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.
Image of publication Sound Power Level Study of a Roof BolterPeer Reviewed Journal Article - January 2006
Download PDF Document (1.68 MB)
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
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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