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本文用寿命表法对某镍矿的562名接尘工人,其中Ⅰ期尘肺患者7人,进行了接尘量与尘肺发病关系的研究。结果表明,如欲将尘肺患病率控制在1%以下,工作30年,作业环境平均浓度不应超过3.41mg/m~3。结果提示,从粉尘浓度、游离SiO_2含量、分散度等综合考虑,与其它金属矿山尘肺发病情况比较基本近似,未发现有何特殊性。认为其致病程度主要取决于粉尘浓度和游离SiO_2含量的高低。
In this paper, a life table method for a nickel mine in 562 workers exposed to dust, of which 7 patients with stage I pneumoconiosis, conducted a dust volume and the incidence of pneumoconiosis. The results showed that, if you want to control the prevalence of pneumoconiosis less than 1% for 30 years, the average working environment should not exceed 3.41mg / m3. The results suggest that from the dust concentration, free SiO 2 content, dispersion and other comprehensive consideration, the incidence of pneumoconiosis with other metal mines basically similar, did not find any particularity. It is considered that the degree of pathogenicity mainly depends on the dust concentration and the content of free SiO 2.