某企业石雕作业工人疲劳度水平调查

Fatigue Induced by Occupational Stone Carving

[目的]调查某企业石雕作业工人的疲劳度水平。[方法]现场测定济宁某石雕加工厂职业危害因素，并对石雕作业工人（n=50）及对照组（n=40）进行劳动强度和疲劳度的调查。[结果]石雕作业中产生的粉尘浓度为23．33～125．33mg／m^3，呼吸性粉尘的构成比为66．0％。78．9％，噪声强度为90．0～104．0dB（A）。心率值测定显示石雕作业为中等强度体力劳动。研究组工人疲劳度总得分（18．78±7．02）分，A因子（身体症状）、B因子（精神症状）、C因子（神经感觉症状）得分分别为（7．36±2．66）、（6．46±2．19）、（5．28±2．08）分，疲劳度达到中等水平，均高于对照组（P〈0．01）。[结论]该企业石雕作业的粉尘及噪声危害较为严重，作业工人的疲劳度均达到中等水平。

[ Objective ] To evaluate fatigue levels among stone carving workers. [ Methods ] An occupational hazards survey was carried out in a stone carving plant, and the labor intensity and the fatigue degree of occupational workers （n=50） and control workers （n=40） were evaluated. [ Results ] The concentrations of dust were 23.33-125.33 mg/m^3, and respirable dust accounted for 66.0%-78.9% of total dust. The 8-hour equivalent continuous A-weighted sound pressure levels were 90.0-104.0dB（A）. Stone curving work was identified as moderate intensity physical labor according to heart rate. The total fatigue score of the occupational workers was （18.78 ±7.02）, and the scores of factor A （physical symptoms）, B （mental symptoms）, and C （nerve system symptoms） were （7.36± 2.66）, （6.46± 2.19）, and （5.28 ± 2.08）, respectively, indicating moderate level of fatigue and significantly higher than those of the control group （P 〈 0.01）. [ Conclusion ] Outstanding occupational hazards of dust and noise are detected in the stone curving plant, which can lead to moderate-level fatigue among occupational workers.