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本文对该矿历年来的粉尘浓度和矽肺发病情况进行了初步调查, 用寿命表直线回归法对矽肺发病趋势进行了预测,并同时计算了累积患病率,求出接尘量与累积患病率的直线相关回归方程,推算出如控制矽肺患病率10‰、连续作业30年时,粉尘容许浓度估计值为1.45mg/m~3。建议中矽量(31～80%)的小型钨锡矿山,粉尘容许浓度以1.5mg/m~3为宜。
This paper conducted a preliminary investigation on the dust concentration and the incidence of silicosis over the years in the mine, predicted the trend of silicosis by linear regression with the life table method, and calculated the cumulative prevalence rate, calculated the amount of dust collection and cumulative disease Linear regression equation was deduced, such as controlling the prevalence of silicosis 10 ‰, 30 consecutive years of operation, the estimated allowable dust concentration of 1.45mg / m ~ 3. Proposed in the amount of silicon (31 ~ 80%) of the small tungsten and tin mines, dust allowable concentration to 1.5mg / m ~ 3 is appropriate.