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随着环境工程的不断发展,近几年国外十分重视对工人作业环境的研究,力图创造一个舒适的工作条件。英美等主要产煤国家,专门成立了煤矿噪音研究机构,加强对煤矿井下噪音的控制和研究。 据英国煤矿健康研究中心研究表明:工人在100分贝以上的噪音中,未采用任何防护措施,连续工作5小时以上,将会影响听觉能力。噪音会诱发其它疾病,如恶心、呕吐、耳鸣等有害于工人身心健康。此外,噪音还往往造成工人情绪烦燥、精力分散、操作迟钝、生产效率降低。 该研究中心还对井下主要噪音源进行实测,其结果如表所示。所测各点噪音值均超过人体允许范围(一般认为70～80分贝以下,对人体影响较小),尤其是主扇机房高达120分贝,掘进工作面气动凿岩机也是井下主要噪音源。
With the continuous development of environmental engineering, foreign countries attach great importance to the study of workers’ working environment in recent years and strive to create a comfortable working condition. Britain and the United States and other major coal producing countries, set up a coal mine noise research institutes to strengthen the noise control and research in coal mines. According to the British Coal Mine Health Research Center studies have shown that: workers in more than 100 dB noise, without any protective measures, more than 5 hours of continuous work, will affect the auditory ability. Noise can induce other diseases, such as nausea, vomiting, tinnitus and other harmful to workers’ physical and mental health. In addition, noise often causes workers to feel irritated, distracted, slow to work, and less productive. The research center also measured the main underground noise source, and the results are shown in the table below. The measured noise at each point exceeds the allowable range of the human body (generally considered to be 70-80 dB, less impact on the human body), especially the main fan room up to 120 decibels, face rock drilling machine is also the main source of noise.