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我们对集体调转到某矿山后又相继脱离了粉尘作业的某金矿脱尘矿工,进行了晚发性矽肺(以下简称晚矽)的流行病学调查。目的是研究高矽矿山晚矽的发病规律,为制定矽肺防治措施提供依据。 一般情况 某金矿母岩为石英脉,含游离二氧化硅90～95％;围岩为片麻岩、闪长岩、花岗岩等,其游离二氧化硅含量分别为50～70％、40～50％和65～75％。母岩和围岩之比约为1:1,围岩中片麻岩量最大,大致占90％,另10％为闪长岩、花岗岩等。矿尘中游离二氧化硅含量平均为76.18％。井下粉尘浓度,推行湿式作业前为285～768毫克/立方米,推行湿
We conducted a survey on the epidemiology of late silicosis (hereinafter referred to as SIL) for a gold mine dust miner who was transferred to a mine and then detached from the dust one after another. The purpose is to study the pathogenesis of late silicon in high-silicon mines and provide evidence for the development of silicosis prevention measures. In general, a gold ore rock is quartz vein with 90-95% of free silica; the surrounding rock is gneiss, diorite and granite with the free silica content of 50-70%, 40-50% 50% and 65-75%. The ratio of mother rock to surrounding rock is about 1: 1. The amount of gneiss in the surrounding rock is the largest, accounting for about 90%. The other 10% is diorite and granite. Mine dust in the average free silica content of 76.18%. Downhole dust concentration, the implementation of wet operations before the 285 ~ 768 mg / cubic meter, the implementation of wet