Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Aspects of Noise Generation and Hearing Protection in Underground Coal Mines
The objective of the study was to identify quantitavely the spectral and amplitude characteristics of coal mine warning signals and assess the feasibility of using personal ear protection to minimize noise exposure but not impair a miner's safety. Roof warning signals from 11 underground coal mines, principally in the Pittsburgh seam, were studied and analyzed. The character of individual acoustic warning signals is shown to be dependent on spectral distribution of energy. Reverberation times (pulse decay rates) were found to be usually between 0.1 and 0.5 seconds. Listening tests were conducted to assess the miner's ability to discriminate speech and roof talk signals in noise and in quiet, with and without ear protectors and with various levels of hearing loss. The ability to detect roof talk is shown to be generally degraded while wearing ear protection in quiet, although, if ear protectors are worn only when required by high noise levels, the ability to detect roof talk will be preserved at its maximum. (Author)
Aspects of Noise Generation and Hearing Protection in Underground Coal Mines
The objective of the study was to identify quantitavely the spectral and amplitude characteristics of coal mine warning signals and assess the feasibility of using personal ear protection to minimize noise exposure but not impair a miner's safety. Roof warning signals from 11 underground coal mines, principally in the Pittsburgh seam, were studied and analyzed. The character of individual acoustic warning signals is shown to be dependent on spectral distribution of energy. Reverberation times (pulse decay rates) were found to be usually between 0.1 and 0.5 seconds. Listening tests were conducted to assess the miner's ability to discriminate speech and roof talk signals in noise and in quiet, with and without ear protectors and with various levels of hearing loss. The ability to detect roof talk is shown to be generally degraded while wearing ear protection in quiet, although, if ear protectors are worn only when required by high noise levels, the ability to detect roof talk will be preserved at its maximum. (Author)
Aspects of Noise Generation and Hearing Protection in Underground Coal Mines
P. L. Michael (Autor:in) / L. W. Saperstein (Autor:in) / J. H. Prout (Autor:in)
1972
169 pages
Report
Keine Angabe
Englisch
Industrial Safety Engineering , Mineral Industries , Protective Equipment , Coal mines , Ear protectors , Noise(Sound) , Feasibility , Amplitude , Protection , Safety , Roofs , Auditory perception , Loudness discrimination , Sound level meters , Reverberation , Sound analyzers , Acoustic measurement , Acoustic resonance , Pittsburgh(Pennsylvania) , Coal mine warning systems , Roof warning signals , Acoustic warning signals
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