Sound Power Level Study of a Roof Bolter

Peterson, J.S.; Kovalchik, P.G.; Matetic, R.J.

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Sound Power Level Study of a Roof Bolter

Published Date:

2004

Source:

2005 SME Annual Meeting, February 28 - March 2, Salt Lake City, Utah, preprint 05-72. Littleton, CO, Society for Mining, Metallurgy, and Exploration, Inc., 2005 Feb; :1-8

Language:

English

[PDF-1.68 MB]

Details:

Personal Author:

Peterson, J.S. ; Kovalchik, P.G. ; Matetic, R.J. ;

Corporate Authors:

National Instittue of Occupational Safety and Health.

Conference Authors:

Society for Mining, Metallurgy, and Exploration (U.S.). Meeting (2005 Feb. 28-Mar. 2 : Salt Lake, UT)

Description:

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.

Subject:

[+]

Document Type:

Book Chapter

Collection(s):

National Institute for Occupational Safety and Health

Main Document Checksum:

[+]

Supporting Files:

No Additional Files

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