由于森林工业的发展,机械化比重大幅度增长,采运机械的种类和型号迅速增多,采运机械的噪声问题日趋严重并逐渐被人们所重视。采运机械的噪声不仅对工人的生产起干扰作用,而且长期在较强的噪声下工作,会引起慢性伤害和诱发其它疾病。据调查,在采运机械的操作者中,听阈上升,听力下降者较多,有的甚至产生噪声性耳聋。这一情况与工龄有密切关系。据英国一份调查 Due to the development of forest industry, the proportion of mechanization has increased substantially, the types and models of mining machinery have been increasing rapidly, and the noise problem of mining machinery has become increasingly serious and gradually taken seriously by people. Noise from pick-and-place machinery not only has an interfering effect on workers’ production, but also works for a long time under strong noise, causing chronic injury and inducing other diseases. According to the survey, in the mining machinery operators, hearing threshold increased, more hearing loss, and some even have noise deafness. This situation is closely related to the length of service. According to a British survey