Case study: Noise risk assessment of workers at the mechanized mining face of coal mines

• DOI: 10.3397/1/377214
• Publication Date: 2024-05-08T04:39:28Z
• Authors: Dong Liu; Ye Zhou
• Keywords: 0103 physical sciences; 01 natural sciences

An assessment of workers at the mechanized mining face coal mines was conducted in China. The survey on current status subject exposure to noise miners administered by occupational health investigation and detailed record work days. dosimeter measurements 211 were obtained, including cutting, supporting, transportation, crushing, auxiliary (such as air pressure, pump, maintenance). A total 56.4% LEX,8h exceeded 85 dB(A), average 8-hour equivalent sound level these 91.2 dB(A). Within frequency from 500 6000 Hz, there a “V” shift displacement value hearing threshold. At 4000 loss N50 (dB) reached maximum. longer time, higher risk both high-frequency noise-induced deafness. high-risk 25 years work, while deafness after 30 work. In addition, Pearson correlation coefficient between time high positively correlated. results show that production hazards mine are relatively large. High levels hazardous typical mines. data can help develop more feasible controls for employer.