摘要
对北京市内公共汽车噪声及全身振动进行了测定，并对公共汽车女司乘人员进行工时测定和生育机能调查。结果表明，公共汽车行驶中车厢内噪声为中等强度，噪声范围７２．０～８６．５ｄＢ（Ａ），全身振动强度，司机及乘务员座椅处垂直振动加速度超过了ＩＳＯ２６３１规定的疲劳－减效界限，但未超过４小时暴露极限，水平方向振动均不超标。女司乘人员平均每日实际接触全身振动５小时。回顾性调查表明，女司乘人员接触全身振动１年以上，月经异常发生率显著高于对照组，其中周期异常及重度痛经发生率均高于对照组；女司乘人员自然流产发生率高于对照组，但差异无显著性。
he noise and vibration parameters were measured on the bus
in the city of Beijing andtheir effect on 499 women drivers and condu-ctions were studied.A
control group of 441 womenwas used for comparison. The results showed that thelevel of noise
in the moving coach was of intermediatedegree , ranging from 70.2dB(A).to 86.5dB (A).The
whole-body vibration intensity measure ment re-vealed that vertical vibration acceleration
exceedid thevalue recommended in ISO 2631,however it did not ex-ceed that of upper limit for 4
hours exposure. Horizon-tal vibration was in below the hggienic stardard.Thesefemale workers
exposed to such vibration for 5 hoursper day on the average. The retrospective studyshowed
that incedence of menstrual abnormality washigher in the exposed group(exposure for more
than 1year)than that of control.Incidence of abnormal men-strual cycle and severe degree of
dysmenorrhea werehigher in the exposed group.The incidence of sponta-neous miscarriage
was also higher in the exposedgroup than that of control,yet,the difference was notstatistically
significance.
出处
《中国工业医学杂志》
CAS
1994年第6期330-333,共4页
Chinese Journal of Industrial Medicine
