七个煤矿岩尘危害的尘肺流行病学分析

本文采用患病率、人年发病率及定群寿命表等方法分析了三个煤种七个煤矿掘进工尘肺病情,表明不同煤矿间掘进工尘肺病情存在着明显差异,这种差异不能完全用粉尘浓度来解释,各矿尘肺患病率的高低与粉尘中游离SiO_2含量的高低基本一致。在粉尘性质相似情况下,粉尘浓度、接尘工龄在尘肺的发生中起着重要作用。研究还表明,煤田地质有火成岩侵入的矿其掘进工尘肺患病率较高。

Epidemiological study of pneumoconiosis in driving workers from seven mines.

Pneumoconiosis of driving workers in seven mines was analysed in light of prevalence, incidence of person-year and life-tables. Obvious differences were found among the different investigated mines. The differences seemed to be impossible to be satisfactorily explained by dust concentration simply. However, the incidence in all the mines was found basically proportional to the content of SiO_2 in dust. On the other hand, concentration of dust and duration of exposure might play an important role in developing pneumoconiosis if dust were of the same quality.