摘要
本文报道了三个织布车间环境噪声的强度为101~104分贝。通过1,091名布机间工人的听力损失程度的测定,发现工作半年后即可有持久性听力损失,以后随工龄的增长而加重,有成为耳聋者.一般经工后休息,听力可有显著恢复,但仍有一定程度的耳聋。听力损失的频率,在不同噪声频谱的影响下有所不同。在织布车间首先是损失高频听力,而在纡子车间主要是语频听力.采用玻璃棉制的耳塞,能保护听力不受损伤.
The intensity of noise measured in 3 weaving rooms was found to be 101-104dB.The 1,091 workers exposed to such noise for 1/2 year exhibited permanent thresh-old shift which became worse as the exposure time prolonged,The hearing loss maybe somewhat improved after several hours of rest but never restored to normal.Amongweavers,the hearing loss was more predominate at 4 kHz level and in weft roomworkers the speech frequencies were chiefly affected.Fibreglass earplug was found tobe an effective hearing protector.
出处
《上海医学》
CAS
1981年第6期30-33,71,共5页
Shanghai Medical Journal
