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本文是根据回顾性调查资料分析，尘肺发病严重程度与生产性粉尘浓度大小及其尘中游离ＳｉＯ＿２含量高低和反映劳动强度与其接尘时间的肺总通气量多少，后三者之积的石英剂量－矽肺发病关系密切。从而拟订以工人接尘２０～３０年，控制尘肺患病率的危害程度分级方案（称方案）为基准，其应用是以现时的石英剂量归纳其方案某档次中，预测预报粉尘危害程度。方法简捷，科学性强，为修改标准（ＧＢ５８１７－８６）提出依据。
This article is based on retrospective investigation of data analysis, the severity of pneumoconiosis and productive dust concentration and the size of the dust in the free SiO2 content and reflect the labor intensity and the dust time of the total lung ventilation how much the latter three product of the quartz dose - Silicosis is closely related. Therefore, we draw up a grading scheme (referred to as the scheme) that takes workers to collect dust for 20 to 30 years and control the prevalence of pneumoconiosis. Its application is to predict the degree of dust hazard in a certain grade of its program based on the current quartz dose. The method is simple and scientific, and provides the basis for revising the standard (GB5817-86).