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为修订粉尘卫生标准提供依据,用流行病学方法对鸡西城子河煤矿18年动态观察资料整理分析,结果表明:在研究探讨煤矽肺发生与接尘浓度的动态观察可用20年作为观察期限,持续观察至26年最多只有0.6%Ⅰ期煤矽肺发生;并证明,接触含游离SiO_210～20%的煤、围岩混合性粉尘浓度平均为9.5mg/m~3,持续18年可不出现煤矽肺,建议含游离SiO_210～20%的煤尘卫生标准修订为8～9mg/m~3为宜。
In order to provide the basis for revising the dust hygiene standards, the epidemiological method was used to analyze the dynamic observation data of Chengzihe Coal Mine in Jixi for 18 years. The results showed that the dynamic observation of the occurrence and dust concentration of coal silicosis could be used for 20 years as the observation period, It was observed that up to 0.6% of Grade I coal silicosis occurred up to 26 years. It was also proved that the average concentration of mixed dust in surrounding rock was 9.5 mg / m ~ 3 when exposed to 10-20% of free SiO_2 and no coal silicosis occurred for 18 years. Proposed to contain free SiO_2 10 ~ 20% of the coal dust health standards revised to 8 ~ 9mg / m ~ 3 is appropriate.