矽肺的发生与空气中的粉尘浓度高低,粉尘中的游离二氧化硅含量有着密切关系。因此对矽尘作业场所的粉尘浓度和矽肺发病率进行长期的动态观察,对于评价除尘措施的效果、指导防尘工作、保护矽尘作业工人的健康有着现实意义,也是国家制订矽尘最高容许浓度不可缺少的资料。为此我们对某矿二十二年来粉尘浓度,矽肺发病率及发病工龄等资料进行整理分析,评价该矿矽肺防治措施的效果及探讨该矿的粉尘容许浓度。 The occurrence of silicosis is closely related to the level of dust concentration in air and the free silica content in dust. Therefore, the long-term dynamic observation of the dust concentration and the incidence of silicosis in the workplace of silica dust has the realistic significance for evaluating the effect of the dust removal measures, guiding the dust prevention work and protecting the health of workers exposed to silica dust. It is also the national maximum allowable concentration of silica dust Indispensable information To this end, we analyzed the dust concentration, the incidence of silicosis and the length of service and other data of a mine in the past 22 years to evaluate the effect of the silicosis prevention and control measures and the dust allowable concentration of the mine.