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本文对四个大中型纺织厂的织布和细纱车间从事噪声作业的工人,排除非噪声致聋者外,共检查1554人,3108耳的纯音听力,同时计算各车间历年来所测噪声的平均声级和测定其频谱特征,采用直线相关回归、协方差等统计学方法分析资料。结果各车间的噪声频谱特征差异对噪声聋罹患率的影响无统计学意义。噪声接触剂量与噪声聋罹患率之间存在着直线相关关系(r=0.96)。从而提出不同程度的噪声聋的噪声接触剂量,为如何限制噪声作业工龄,防止噪声聋的发生提供科学依据。
In this paper, workers in four large and medium-sized textile weaving and spinning workshop engaged in noise operations, excluding non-noise-induced deaf, a total of 1554 people were examined, 3108 ears of pure tone hearing, while calculating the workshop over the years measured the average noise Sound level and determine its spectral characteristics, using linear regression, covariance and other statistical methods to analyze the data. Results There was no significant difference between the noise spectrum characteristics of different workshops on the incidence of noise-induced deafness. There is a linear correlation between noise exposure dose and noise and deafness rate (r = 0.96). Thus put forward different degrees of noise and deaf noise exposure dose for how to limit the working length of noise to prevent noise from deaf to provide a scientific basis.