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为估算铁路隧道作业现场的最高容许浓度提供参考依据 ,利用肺内粉尘存留量反推法 (检测一法 )和以累积接尘时间为权重调整的阈限值法 (检测二法 )估算铁路隧道粉尘作业的粉尘容许浓度。结果表明 ,预期接尘工龄为 30年 ,控制患病率分别在 0 5 %和 1 %水平的隧道施工现场粉尘容许浓度的估计值 ,检测一法 :0 8,1 2mg/m3;检测二法 :2 0 ,4 0mg/m3。
To provide a reference for estimating the maximum allowable concentration of railway tunnel work site, the railway tunnel was estimated by using the method of inference of dust accumulation in the lung (detection method) and the threshold limit method (detection of second method) Dust operating dust allowable concentration. The results showed that the expected dust-receiving construction age was 30 years, and the prevalence rates of 0, 5% and 1% were controlled respectively. The allowable concentration of dust in tunnel construction site was estimated as follows: 0 8,1 2mg / m3; : 20, 40mg / m3.