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Mining Publication: Experimental Methods to Reduce Noise Generated by Haul Trucks and LHDs
Keywords: Haulage trucks Load haul dumps Noise and vibration control Noise control equipment
Original creation date: September 2018
Authors: J Peterson
Peer Reviewed Journal Article - March 2019
Go to Web Page
NIOSHTIC2 Number: 20054040
Noise Control Eng J 2018 Sep-Oct; 66(5):446-458
The National Institute for Occupational Safety and Health (NIOSH) maintains the Pittsburgh Mining Research Division (PMRD) where a wide variety of mining-related health and safety research is conducted. Part of this research is devoted to reducing the incidence of noise-induced hearing loss (NIHL) among the nation’s mining workforce. The need for this research is particularly important, as NIHL is the second most common occupational-related disease among miners. Many types of equipment operators are overexposed to noise, and NIOSH has worked to develop noise controls that reduce the sound level at the equipment operator’s location and, thus, operator noise exposure. Examples of these include a urethane-coated flight bar chain for continuous mining machines and a drill bit isolator for roof bolting machines. This article discusses the development of a retrofitted noise control package for haul trucks and load-haul-dumps (LHDs) used in underground metal/nonmetal mines. Experimental methods under discussion include dosimetry and time motion studies, to determine when an operator accumulates the most noise dose. Noise source identification techniques are used to determine the primary noise contributors to the sound level at the operator’s position. Proof-of-concept testing using rudimentary noise controls is undertaken to confirm that treating the suspected noise sources will actually reduce the sound level at the operator’s location. Next, a description is given of the development of noise controls—an iterative process where noise controls are fabricated, evaluated in an acoustic laboratory, refined, and tested again. Those noise controls that show promise are then field tested under actual mine operating conditions.
First page of Experimental Methods to Reduce Noise Generated by Haul Trucks and LHDsPeer Reviewed Journal Article - March 2019
Go to Web Page
NIOSHTIC2 Number: 20054040
Noise Control Eng J 2018 Sep-Oct; 66(5):446-458
See Also
A Control Suite to Reduce Roof Bolting Machine Drilling Noise
Determination of Sound Exposures (DOSES): Software Manual and Implementation Guide
The Evolution of Drill Bit and Chuck Isolators to Reduce Roof Bolting Machine Drilling Noise
Mining Haul Truck Cab Noise: An Evaluation of Three Acoustical Environments
NIOSH Researchers Win Noise Control Award
Noise Reduction of Continuous Miner Scrubber Fan System
Technology News 536 - NIOSH Develops New Software to Analyze and Reduce Noise Exposure
Technology News 538: Acoustic Enclosure to Reduce Noise From Vibrating Screen Mechanism Housings
Technology News 539 - Identifying The Benefits Of Engineering Noise Controls Through A Business Case
Tying Acceleration and GPS Location Information Together To Create a Mine Management Tool
Page last reviewed: April 2, 2019
Page last updated: April 2, 2019
Content source: National Institute for Occupational Safety and Health, Mining Program
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